{"id":1193,"date":"2018-08-10T10:39:03","date_gmt":"2018-08-10T02:39:03","guid":{"rendered":"http:\/\/www.5x44.cn\/?p=1193"},"modified":"2023-05-29T22:00:16","modified_gmt":"2023-05-29T14:00:16","slug":"django%e6%a8%a1%e6%9d%bf%e8%af%ad%e8%a8%80","status":"publish","type":"post","link":"https:\/\/www.5x44.cn\/?p=1193","title":{"rendered":"Django\u6a21\u677f\u8bed\u8a00"},"content":{"rendered":"\n<p>Django\u6a21\u677f\u7cfb\u7edf\u63d0\u4f9b\u4e86\u7c7b\u4f3c\u7f16\u7a0b\u7ed3\u6784\u7684\u6807\u7b7e\u2014\u2014if\u7528\u4e8e\u5e03\u5c14\u6d4b\u8bd5\uff1bfor\u7528\u4e8e\u5faa\u73af\u7b49\u7b49\u3002\u4f46\u8fd9\u5e76\u4e0d\u662f\u7b80\u5355\u7684\u6267\u884cpython\u4ee3\u7801\uff0c\u800c\u4e14\u6a21\u677f\u7cfb\u7edf\u4e0d\u80fd\u6267\u884c\u4efb\u610fpython\u8868\u8fbe\u5f0f\u3002\u53ea\u6709\u6807\u7b7e\u3001\u8fc7\u6ee4\u5668\u548c\u4ee5\u4e0b\u5217\u51fa\u7684\u53e5\u6cd5\uff08\u867d\u7136\u53ef\u4ee5\u6dfb\u52a0\u81ea\u5df1\u7684\u6269\u5c55\u5230\u6a21\u677f\u7cfb\u7edf\uff09<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u6a21\u677f<\/h1>\n\n\n\n<p>\u4e00\u4e2a\u6a21\u677f\u5c31\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u6587\u672c\u6587\u4ef6\u3002\u5b83\u80fd\u4ea7\u751f\u4efb\u4f55\u57fa\u4e8e\u6587\u672c\u7684\u683c\u5f0f\uff08HTML, XML, CSV\u7b49\u7b49\uff09<br>\u6a21\u677f\u5305\u542b\u4e86<strong>\u53d8\u91cf<\/strong>\uff0c\u5f53\u6a21\u677f\u5bf9\u5176\u8fdb\u884c\u5c55\u5f00\u65f6\uff0c\u4f1a\u4f7f\u7528\u91cc\u9762\u7684\u503c\u8fdb\u884c\u66ff\u6362\u3002\u800c<strong>\u6807\u7b7e<\/strong>\u63a7\u5236\u4e86\u6a21\u677f\u903b\u8f91\u3002<br>\u4e0b\u9762\u662f\u4e00\u4e2a\u6a21\u677f\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><span class=\"cp\">{%<\/span> <span class=\"k\">extends<\/span> <span class=\"s2\">\"base_generic.html\"<\/span> <span class=\"cp\">%}<\/span>\n\n<span class=\"cp\">{%<\/span> <span class=\"k\">block<\/span> <span class=\"nv\">title<\/span> <span class=\"cp\">%}{{<\/span> <span class=\"nv\">section.title<\/span> <span class=\"cp\">}}{%<\/span> <span class=\"k\">endblock<\/span> <span class=\"cp\">%}<\/span>\n\n<span class=\"cp\">{%<\/span> <span class=\"k\">block<\/span> <span class=\"nv\">content<\/span> <span class=\"cp\">%}<\/span>\n<span class=\"p\">&lt;<\/span><span class=\"nt\">h1<\/span><span class=\"p\">&gt;<\/span><span class=\"cp\">{{<\/span> <span class=\"nv\">section.title<\/span> <span class=\"cp\">}}<\/span><span class=\"p\">&lt;\/<\/span><span class=\"nt\">h1<\/span><span class=\"p\">&gt;<\/span>\n\n<span class=\"cp\">{%<\/span> <span class=\"k\">for<\/span> <span class=\"nv\">story<\/span> <span class=\"k\">in<\/span> <span class=\"nv\">story_list<\/span> <span class=\"cp\">%}<\/span>\n<span class=\"p\">&lt;<\/span><span class=\"nt\">h2<\/span><span class=\"p\">&gt;<\/span>\n  <span class=\"p\">&lt;<\/span><span class=\"nt\">a<\/span> <span class=\"na\">href<\/span><span class=\"o\">=<\/span><span class=\"s\">\"<\/span><span class=\"cp\">{{<\/span> <span class=\"nv\">story.get_absolute_url<\/span> <span class=\"cp\">}}<\/span><span class=\"s\">\"<\/span><span class=\"p\">&gt;<\/span>\n    <span class=\"cp\">{{<\/span> <span class=\"nv\">story.headline<\/span><span class=\"o\">|<\/span><span class=\"nf\">upper<\/span> <span class=\"cp\">}}<\/span>\n  <span class=\"p\">&lt;\/<\/span><span class=\"nt\">a<\/span><span class=\"p\">&gt;<\/span>\n<span class=\"p\">&lt;\/<\/span><span class=\"nt\">h2<\/span><span class=\"p\">&gt;<\/span>\n<span class=\"p\">&lt;<\/span><span class=\"nt\">p<\/span><span class=\"p\">&gt;<\/span><span class=\"cp\">{{<\/span> <span class=\"nv\">story.tease<\/span><span class=\"o\">|<\/span><span class=\"nf\">truncatewords<\/span><span class=\"s2\">:\"100\"<\/span> <span class=\"cp\">}}<\/span><span class=\"p\">&lt;\/<\/span><span class=\"nt\">p<\/span><span class=\"p\">&gt;<\/span>\n<span class=\"cp\">{%<\/span> <span class=\"k\">endfor<\/span> <span class=\"cp\">%}<\/span>\n<span class=\"cp\">{%<\/span> <span class=\"k\">endblock<\/span> <span class=\"cp\">%}<\/span><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">\u53d8\u91cf<\/h1>\n\n\n\n<p>\u53d8\u91cf\u770b\u8d77\u6765\u662f\u8fd9\u6837\u7684\uff1a{{ variable }}\u3002\u5f53\u6a21\u677f\u5f15\u64ce\u9047\u5230\u53d8\u91cf\u65f6\uff0c\u5b83\u4f1a\u5c06\u53d8\u91cf\u7528\u91cc\u9762\u7684\u503c\u5c55\u5f00\u6765\u4ee3\u66ff\u3002\u53d8\u91cf\u540d\u7531\u4efb\u610f\u5b57\u6bcd\u548c\u4e0b\u5212\u7ebf\u7ec4\u6210\uff0c\u4f46\u662f\u4e0d\u80fd\u4ee5\u4e0b\u5212\u7ebf\u5f00\u5934\u3002\u7edd\u5bf9\u4e0d\u80fd\u5728\u53d8\u91cf\u540d\u4e2d\u51fa\u73b0\u7a7a\u683c\u6216\u5176\u5b83\u7b26\u53f7\u3002<\/p>\n\n\n\n<pre style=\"font-size: 20px;\">\u5982\uff1a\n<span style=\"background-color:#E0FFB8;border:1px solid #94da3a;\">My first name is {{ first_name }}. My last name is {{ last_name }}<\/span>\n\u4e0a\u9762\u7684\u5185\u5bb9\u4f7f\u7528{'first_name':'John, 'last_name':'Doe'}\u8fd9\u4e2a\u5b57\u5178\u6765\u6e32\u67d3\u6210\uff1a\n<span style=\"background-color:#E0FFB8;border:1px solid #94da3a;\">My first name is John. My last name is Doe.<\/span><\/pre>\n\n\n\n<p>\u4f7f\u7528\u70b9\uff08.\uff09\u7b26\u53f7\u6765\u8fdb\u884c\u5b57\u5178\u67e5\u627e\u3001\u8bbf\u95ee\u53d8\u91cf\u5c5e\u6027\u548c\u5217\u8868\u7d22\u5f15\u67e5\u627e\u3002<\/p>\n\n\n\n<p><strong>\u540e\u53f0\u64cd\u4f5c<\/strong><br>\u6280\u672f\u4e0a\u8bb2\uff0c\u5f53\u6a21\u677f\u7cfb\u7edf\u9047\u5230\u70b9\u53f7\uff0c\u5b83\u6309\u987a\u5e8f\u5c1d\u8bd5\u4e0b\u9762\u7684\u67e5\u627e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b57\u5178\u67e5\u627e(\u70b9\u540e\u7684\u5185\u5bb9\u4f1a\u88ab\u5f53\u4f5c\u5b57\u5178\u7c7b\u578b\u7684KEY\u4f7f\u7528)<\/li>\n\n\n\n<li>\u5c5e\u6027\u6216\u65b9\u6cd5\u67e5\u627e<\/li>\n\n\n\n<li>\u6570\u5b57\u7d22\u5f15\u67e5\u627e<\/li>\n<\/ul>\n\n\n\n<p>\u5982\u679c\u7ed3\u679c\u503c\u662f\u53ef\u8c03\u7528\u7684\uff0c\u5b83\u88ab\u4ee5\u65e0\u53c2\u6570\u7684\u5f62\u5f0f\u8c03\u7528\u3002\u8c03\u7528\u7ed3\u679c\u53d8\u6210\u6a21\u677f\u503c\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e2a\u67e5\u627e\u987a\u5e8f\u80fd\u5bfc\u81f3\u4e00\u4e9b\u672a\u77e5\u884c\u4e3a\uff08\u8d85\u51fa\u5bf9\u8c61\u7684\u5b57\u5178\u67e5\u627e\u8303\u56f4\uff09\u3002\u8003\u8651\u4e0b\u9762\u7684\u4ee3\u7801\u6bb5\uff0c\u5b83\u8bd5\u56fe\u8d85\u51fa<strong>collections.defaultdict<\/strong>\u7684\u67e5\u627e\u8303\u56f4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">    {% for k, v in defaultdict.items %}\n              do something with k and v here...\n    {% endfor %}\n<\/pre>\n\n\n\n<p>\u56e0\u4e3a\u5148\u4ece\u5b57\u5178\u67e5\u627e\u5f00\u59cb\uff0c\u5b57\u5178\u67e5\u627e\u5f3a\u884c\u5f00\u59cb\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e2a\u9ed8\u8ba4\u503c\u4ee3\u66ff\u4f7f\u7528.items()\u65b9\u6cd5\u3002\u5728\u672c\u4f8b\u4e2d\u5148\u8003\u8651\u8f6c\u6362\u6210\u4e00\u4e2a\u5b57\u5178\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4f7f\u7528\u4e86\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u53d8\u91cf\uff0c\u6a21\u677f\u7cfb\u7edf\u5c06\u4f1a\u4f7f\u7528<strong>string_if_invalid<\/strong>\u9009\u9879\u7684\u503c\u4ee3\u66ff\uff0c\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5b83\u7684\u503c\u662f&#8221;\uff08\u7a7a\u5b57\u7b26\u4e32\uff09\u3002<\/p>\n\n\n\n<p>Note that \u201cbar\u201d in a template expression like <code class=\"docutils literal notranslate\"><span class=\"pre\">{{<\/span> <span class=\"pre\">foo.bar<\/span> <span class=\"pre\">}}<\/span><\/code> will be interpreted as a literal string and not using the value of the variable \u201cbar\u201d, if one exists in the template context.<\/p>\n\n\n\n<p>\u53d8\u91cf\u7684\u5c5e\u6027\u4ee5\u4e0b\u5212\u7ebf\u5f00\u5934\uff0c\u53ef\u80fd\u4e0d\u80fd\u88ab\u8bbf\u95ee\uff0c\u56e0\u4e3a\u5b83\u53ef\u80fd\u88ab\u8ba4\u4e3a\u662f\u79c1\u6709\u5c5e\u6027\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u8fc7\u6ee4\u5668<\/h1>\n\n\n\n<p>\u53ef\u4ee5\u901a\u8fc7\u201c\u8fc7\u6ee4\u5668\u201d\u4fee\u6539\u53d8\u91cf\u3002<\/p>\n\n\n\n<p>\u8fc7\u6ee4\u5668\u770b\u8d77\u6765\u662f\u8fd9\u4e2a\u6837\u5b50\u7684\uff1a{{ name | lower }}\u3002\u5728\u8fc7\u6ee4\u5668lower\u4fee\u6539\u540e\uff0c\u663e\u793a{{ name }}\u53d8\u91cf\u7684\u503c\u3002\u8be5\u8fc7\u6ee4\u5668\u5c06\u6587\u672c\u8f6c\u6362\u6210\u5c0f\u5199\u3002\u901a\u8fc7\u7ba1\u9053\u64cd\u4f5c\u7b26\uff08|\uff09\u5e94\u7528\u8fc7\u6ee4\u5668\u3002<\/p>\n\n\n\n<p>\u8fc7\u6ee4\u5668\u53ef\u4ee5\u4f7f\u7528\u591a\u4e2a\u3002\u4e00\u4e2a\u8fc7\u6ee4\u5668\u7684\u8f93\u51fa\u505a\u4e3a\u4e0b\u4e00\u4e2a\u8fc7\u6ee4\u5668\u7684\u8f93\u5165\u3002<strong>{{ text | escape | linebreaks }}<\/strong>\u8fd9\u662f\u5c06\u6587\u672c\u4e2d\u7684\u7279\u6b8a\u7b26\u53f7\u8f6c\u6362\u6210HTML\u63a5\u6536\u7684\u6587\u672c\u5f62\u5f0f\uff0c\u7136\u540e\u4ea4\u6362\u884c\u8f6c\u6362\u6210&lt;p&gt;\u6807\u8bb0\u3002<\/p>\n\n\n\n<p>\u6709\u4e9b\u8fc7\u6ee4\u5668\u662f\u6709\u53c2\u6570\u7684\u3002\u8fc7\u6ee4\u5668\u53c2\u6570\u770b\u8d77\u6765\u662f\u8fd9\u6837\u7684\uff1a<strong>{{ bio | truncatewords:30 }}<\/strong>\u3002\u8fd9\u4f1a\u53ea\u663e\u793abio\u53d8\u91cf\u4e2d\u7684\u524d30\u4e2a\u5b57\u7b26\u3002<\/p>\n\n\n\n<p>\u8fc7\u6ee4\u5668\u4e2d\u5305\u542b\u7684\u7a7a\u683c\u5fc5\u987b\u88ab\u53cc\u5f15\u53f7\u5305\u542b\u8d77\u6765\uff1b\u4f8b\u5982\uff0c\u7528\u9017\u53f7\u548c\u7a7a\u683c\u94fe\u63a5\u5217\u8868<strong>{{ list | join:&#8221;,&nbsp; &#8221; }}<\/strong>\u3002<\/p>\n\n\n\n<p><code>default<\/code><br>\u5982\u679c\u4e00\u4e2a\u53d8\u91cf\u5931\u6548\u6216\u7a7a\uff0c\u4f7f\u7528\u7ed9\u4e88\u7684\u9ed8\u8ba4\u503c\u3002\u5426\u5219\u4f7f\u7528\u53d8\u91cf\u7684\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{{ value | default:\"nothing\"}}\n<\/pre>\n\n\n\n<p>\u5982\u679c<strong>value<\/strong>\u4e0d\u5b58\u5728\u6216\u8005\u662f\u7a7a\uff0c\u4e0a\u9762\u7684\u8868\u8fbe\u5f0f\u663e\u793a&#8221;<strong>nothing<\/strong>&#8220;\u3002<\/p>\n\n\n\n<p><code>length<\/code><br>\u8fd4\u56de\u503c\u7684\u957f\u5ea6\uff0c\u8fd9\u5bf9\u4e8e\u5b57\u7b26\u4e32\u548c\u5217\u8868\u90fd\u53ef\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{{ value | length }}\n<\/pre>\n\n\n\n<p>\u5982\u679cvalue\u662f\u5217\u8868[&#8216;a&#8217;, &#8216;b&#8217;, &#8216;c&#8217;, &#8216;d&#8217;]\u8f93\u51fa\u4f1a\u662f4\u3002<\/p>\n\n\n\n<p><code>filesizeformat<\/code><br>\u5c06\u503c\u8fdb\u884c\u683c\u5f0f\u5316\u8f93\u51fa\uff0c\u4f8b\u5982\u50cf\u4eba\u7c7b\u53ef\u8bfb\u6587\u4ef6\u5927\u5c0f\uff08\u4e5f\u5c31\u662f&#8217;13 KB&#8217;, &#8216;4.1 MB&#8217;, &#8216;102 bytes&#8217;\u7b49\u7b49\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{{value | filesizeformat }}\n<\/pre>\n\n\n\n<p>\u5982\u679cvalue\u662f123456789\uff0c\u90a3\u4e48\u8f93\u51fa\u4f1a\u662f117.7MB\u3002<\/p>\n\n\n\n<p>\u8fd8\u6709\u8fd9\u53ea\u662f\u5c11\u6570\u51e0\u4e2a\u4f8b\u5b50\uff0c <a class=\"reference internal\" href=\"https:\/\/docs.djangoproject.com\/en\/2.1\/ref\/templates\/builtins\/#ref-templates-builtins-filters\"><span class=\"std std-ref\">built-in filter reference<\/span><\/a> \u6709\u5b8c\u6574\u5217\u8868\u3002<\/p>\n\n\n\n<p>\u4e5f\u53ef\u4ee5\u521b\u5efa\u81ea\u5df1\u7684\u6a21\u677f\u8fc7\u6ee4\u5668\uff1b <a class=\"reference internal\" href=\"https:\/\/docs.djangoproject.com\/en\/2.1\/howto\/custom-template-tags\/\"><span class=\"doc\">Custom template tags and filters<\/span><\/a>.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u6807\u7b7e<\/h1>\n\n\n\n<p>\u6807\u7b7e\u770b\u8d77\u6765\u662f\u8fd9\u6837\u7684\uff1a{% tag %}\u3002\u6807\u7b7e\u6bd4\u53d8\u91cf\u66f4\u590d\u6742\uff1a\u6709\u4e9b\u521b\u5efa\u6587\u672c\u8f93\u51fa\uff0c\u6709\u4e9b\u63a7\u5236\u7a0b\u5e8f\u903b\u8f91\uff0c\u6709\u4e9b\u52a0\u8f7d\u989d\u5916\u4fe1\u606f\u5230\u6a21\u677f\u3002<\/p>\n\n\n\n<p>\u6709\u4e9b\u6807\u7b7e\u9700\u8981\u5f00\u59cb\u548c\u7ed3\u675f\u6807\u7b7e\uff1a{% tag %} tag contents {% endtag %}\u3002<\/p>\n\n\n\n<p>Django \u6709\u4e8c\u5341\u51e0\u4e2a\u5185\u5efa\u6a21\u677f\u6807\u7b7e\u3002\u53ef\u4ee5\u5728<a class=\"reference internal\" href=\"https:\/\/docs.djangoproject.com\/en\/2.1\/ref\/templates\/builtins\/#ref-templates-builtins-tags\"><span class=\"std std-ref\">built-in tag reference<\/span><\/a>\u770b\u5230\u6240\u6709\u3002\u4e0b\u9762\u5c55\u793a\u4e00\u4e9b\u5e38\u7528\u7684\u6807\u7b7e\uff1a<\/p>\n\n\n\n<p><code>for<\/code><br>\u5faa\u73af\u3002\u4f8b\u5982\u663e\u793aathlete_list\u7684\u5143\u7d20\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;ul&gt;\n{% for athlete in athlete_list %}\n    &lt;li&gt;{{ athlete.name }}&lt;\/li&gt;\n{% endfor %}\n&lt;\/ul&gt;\n<\/pre>\n\n\n\n<p><code>if, elif \u548c else<\/code><br>\u5c55\u5f00\u53d8\u91cf\uff0c\u5982\u679c\u53d8\u91cf\u7684\u503c\u662f\u201c\u771f\u201d\uff0c\u90a3\u4e48\u663e\u793a\u5757\u4e2d\u7684\u5185\u5bb9\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{%&nbsp; if&nbsp; athlete_list %}\n\n    Number of athletes: {{ athlete_list|length}}\n\n{% elif athlete_in_locker_room_list %}\n\n    Athletes sould be out of the locker room soon!\n\n{% else %}\n\n    No athletes.\n\n{% endif %}\n<\/pre>\n\n\n\n<p>\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u5982\u679cathlete_list\u4e0d\u662f\u7a7a\uff0c <strong>{{ athlete_list|length }}<\/strong>\u5c31\u4f1a\u663e\u793a\u5b83\u7684\u503c\u3002\u5426\u5219\uff0c\u5982\u679cathlete_in_locker_room_list \u4e0d\u662f\u7a7a\uff0c\u90a3\u4e48\u4f1a\u663e\u793a\u201cAthletes sould be out of the locker room soon!\u201d\u3002\u5426\u5219\u663e\u793a\u201cNo athletes.\u201d<\/p>\n\n\n\n<p>\u53ef\u4ee5\u5728<strong>if<\/strong>\u6807\u7b7e\u4e2d\u540c\u65f6\u4f7f\u7528\u8fc7\u6ee4\u5668\u548c\u5404\u79cd\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{% if athlete_list | length &gt;1 %}\n\n    Team: {% for athlete in athlete_list %} ... {% endfor %}\n\n{% else %}\n\n    Athlete: {{ athlete_list.0.name }}\n\n{% endif %}\n<\/pre>\n\n\n\n<p>\u5728\u4e0a\u9762\u4f8b\u5b50\u8fd0\u884c\u7684\u540c\u65f6\uff0c\u60a8\u8981\u77e5\u9053\u4e00\u70b9\uff0c\u591a\u6570\u7684\u6a21\u677f\u8fc7\u6ee4\u5668\u8fd4\u56de\u7684\u662f\u5b57\u7b26\u4e32\uff0c\u6240\u4ee5\u4f7f\u7528\u8fc7\u6ee4\u5668\u8fdb\u884c\u6570\u5b57\u6bd4\u8f83\u4e00\u822c\u4e0d\u4f1a\u50cf\u60a8\u5e0c\u671b\u7684\u90a3\u6837\u8fd0\u884c\u3002\u4e0d\u8fc7\u5728\u672c\u4f8b\u4e2d<code>length<\/code>\u662f\u4e2a\u4f8b\u5916\u3002<\/p>\n\n\n\n<p><code>block<\/code>\u548c<code>extends<\/code><br>\u8bbe\u7f6e\u6a21\u677f\u7ee7\u627f\uff0c\u53ef\u4ee5\u5728\u6a21\u677f\u4e2d\u8bbe\u7f6e\u4e00\u4e2a\u201c\u57fa\u7c7b\u201d\u6a21\u677f\uff0c\u662f\u5927\u5e45\u7f29\u51cf\u91cd\u590d\u5de5\u4f5c\u7684\u5de5\u5177\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u6a21\u677f\u7ee7\u627f<\/h1>\n\n\n\n<p>\u5728Django\u7684\u6a21\u677f\u5f15\u64ce\u4e2d\u8fd9\u4e2a\u529f\u80fd\u5f88\u5f3a\u5927\u4e5f\u5f88\u590d\u6742\u3002\u6a21\u677f\u7ee7\u627f\u5141\u8bb8\u5efa\u7acb\u4e00\u4e2a\u57fa\u672c\u6846\u67b6\uff0c\u5b83\u5305\u542b\u4e86\u6240\u6709\u5e38\u7528\u7684\u5143\u7d20\u5e76\u4e14\u5b9a\u4e49\u4e86\u5b50\u6a21\u677f\u53ef\u4ee5\u91cd\u5199\u7684<code>block<\/code>\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u8fd9\u4e2a\u4f8b\u5b50\u5c55\u793a\u4e86\u6a21\u677f\u7ee7\u627f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;!DOCTYPE html&gt;\n&lt;html lang=\"en\"&gt;\n&lt;head&gt;\n    &lt;link rel=\"stylesheet\" href=\"style.css\"&gt;\n    &lt;title&gt;\n          {% block title %}My amazing site {% endblock %}\n    &lt;\/title&gt;\n&lt;\/head&gt;\n\n&lt;body&gt;\n    &lt;div id=\"sidebar\"&gt;\n        {% block sidebar %}\n        &lt;ul&gt;\n            &lt;li&gt;&lt;a href=\"\/\"&gt;Home&lt;\/a&gt;&lt;\/li&gt;\n            &lt;li&gt;&lt;a href=\"\/blog\/\"&gt;Blog&lt;\/a&gt;&lt;\/li&gt;\n        &lt;\/ul&gt;\n        {% endblock %}\n    &lt;\/div&gt;\n    \n    &lt;div id=\"contendt\"&gt;\n        {% block content %}{% endblock %}\n    &lt;\/div&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;\n<\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u6a21\u677f\u6211\u4eec\u79f0\u4e4b\u4e3a\u201cbase.html\u201d\uff0c\u5b9a\u4e49\u4e86\u4e00\u4e2a\u7b80\u5355\u7684HTML\u201c\u9aa8\u67b6\u201d\u6587\u6863\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u4e00\u4e2a\u7b80\u5355\u7684\u4e24\u5217\u9875\u9762\u3002\u5b83\u7684\u5b50\u6a21\u677f\u7684\u5de5\u4f5c\u662f\u586b\u5145\u7a7a\u767d\u7684block\u5757\u5185\u5bb9\u3002<\/p>\n\n\n\n<p>\u5728\u672c\u4f8b\u4e2d\uff0cblock\u6807\u8bb0\u5b9a\u4e49\u4e86\u4e09\u4e2ablock\u5757\uff0c\u8fd9\u4e09\u4e2ablock\u5757\u7528\u4e8e\u5b50\u6a21\u677f\u586b\u5145\u3002\u6240\u6709\u7684block\u6807\u8bb0\uff0c\u90fd\u662f\u7528\u4e8e\u544a\u8bc9\u6a21\u677f\u5f15\u64ce\uff0c\u5b83\u7684\u5b50\u6a21\u677f\u53ef\u4ee5\u53ef\u4ee5\u8986\u76d6\u8fd9\u4e2a\u4f4d\u7f6e\u7684\u5185\u5bb9\u3002<\/p>\n\n\n\n<p>\u4e00\u4e2a\u5b50\u6a21\u677f\u53ef\u4ee5\u770b\u8d77\u6765\u662f\u8fd9\u4e2a\u6837\u5b50\u7684\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{% <span style=\"color: #339966;\">extends<\/span> \"base.html\" %}\n{% <span style=\"color: #339966;\">block<\/span> title %}My amazing blog {% <span style=\"color: #339966;\">endblock<\/span> %}\n{% <span style=\"color: #339966;\">block<\/span> content %}\n{% <span style=\"color: #339966;\">for<\/span> entry <span style=\"color: #339966;\">in<\/span> blog_entries %}\n    &lt;<span style=\"color: #339966;\">h2<\/span>&gt;{{ entry.title }}&lt;<span style=\"color: #339966;\">\/h2<\/span>&gt;\n    &lt;<span style=\"color: #339966;\">p<\/span>&gt;{{ entry.body }}&lt;<span style=\"color: #339966;\">\/p<\/span>&gt;\n{% <span style=\"color: #339966;\">endfor<\/span> %}\n{% <span style=\"color: #339966;\">endblock<\/span> %}\n<\/pre>\n\n\n\n<p>extends\u6807\u8bb0\u5728\u8fd9\u4e2a\u91cc\u4e2a\u5173\u952e\u5b57\u3002\u5b83\u544a\u8bc9\u6a21\u677f\u5f15\u64ce\u8fd9\u4e2a\u6a21\u677f\u201c\u6269\u5c55\u201d\u4e86\u53e6\u4e00\u4e2a\u6a21\u677f\u3002\u5f53\u6a21\u677f\u7cfb\u7edf\u5c55\u5f00\u8fd9\u4e2a\u6a21\u677f\u65f6\uff0c\u9996\u5148\u5b9a\u4f4d\u5b83\u7684\u7236\u7ea7\u6a21\u677f\u2014\u2014\u4e5f\u5c31\u662f\u201cbase.html\u201d\u3002<\/p>\n\n\n\n<p>\u5728\u8fd9\u91cc\uff0c\u6a21\u677f\u5f15\u64ce\u4f1a\u6ce8\u610f\u5230base.html\u4e2d\u6709\u4e09\u4e2ablock\u6807\u8bb0\uff0c\u7136\u540e\u4f7f\u7528\u5b50\u6a21\u677f\u4e2d\u7684\u5185\u5bb9\u66ff\u6362\u5b83\u4eec\u3002\u6839\u636eblog_entries\u7684\u503c\uff0c\u8f93\u51fa\u770b\u8d77\u6765\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n<div class=\"highlight-html+django notranslate\">\n<div class=\"highlight\">\n<pre><span class=\"cp\">&lt;!DOCTYPE html&gt;<\/span>\n<span class=\"p\">&lt;<\/span><span class=\"nt\">html<\/span> <span class=\"na\">lang<\/span><span class=\"o\">=<\/span><span class=\"s\">\"en\"<\/span><span class=\"p\">&gt;<\/span>\n<span class=\"p\">&lt;<\/span><span class=\"nt\">head<\/span><span class=\"p\">&gt;<\/span>\n    <span class=\"p\">&lt;<\/span><span class=\"nt\">link<\/span> <span class=\"na\">rel<\/span><span class=\"o\">=<\/span><span class=\"s\">\"stylesheet\"<\/span> <span class=\"na\">href<\/span><span class=\"o\">=<\/span><span class=\"s\">\"style.css\"<\/span><span class=\"p\">&gt;<\/span>\n    <span class=\"p\">&lt;<\/span><span class=\"nt\">title<\/span><span class=\"p\">&gt;<\/span>My amazing blog<span class=\"p\">&lt;\/<\/span><span class=\"nt\">title<\/span><span class=\"p\">&gt;<\/span>\n<span class=\"p\">&lt;\/<\/span><span class=\"nt\">head<\/span><span class=\"p\">&gt;<\/span>\n\n<span class=\"p\">&lt;<\/span><span class=\"nt\">body<\/span><span class=\"p\">&gt;<\/span>\n    <span class=\"p\">&lt;<\/span><span class=\"nt\">div<\/span> <span class=\"na\">id<\/span><span class=\"o\">=<\/span><span class=\"s\">\"sidebar\"<\/span><span class=\"p\">&gt;<\/span>\n        <span class=\"p\">&lt;<\/span><span class=\"nt\">ul<\/span><span class=\"p\">&gt;<\/span>\n            <span class=\"p\">&lt;<\/span><span class=\"nt\">li<\/span><span class=\"p\">&gt;&lt;<\/span><span class=\"nt\">a<\/span> <span class=\"na\">href<\/span><span class=\"o\">=<\/span><span class=\"s\">\"\/\"<\/span><span class=\"p\">&gt;<\/span>Home<span class=\"p\">&lt;\/<\/span><span class=\"nt\">a<\/span><span class=\"p\">&gt;&lt;\/<\/span><span class=\"nt\">li<\/span><span class=\"p\">&gt;<\/span>\n            <span class=\"p\">&lt;<\/span><span class=\"nt\">li<\/span><span class=\"p\">&gt;&lt;<\/span><span class=\"nt\">a<\/span> <span class=\"na\">href<\/span><span class=\"o\">=<\/span><span class=\"s\">\"\/blog\/\"<\/span><span class=\"p\">&gt;<\/span>Blog<span class=\"p\">&lt;\/<\/span><span class=\"nt\">a<\/span><span class=\"p\">&gt;&lt;\/<\/span><span class=\"nt\">li<\/span><span class=\"p\">&gt;<\/span>\n        <span class=\"p\">&lt;\/<\/span><span class=\"nt\">ul<\/span><span class=\"p\">&gt;<\/span>\n    <span class=\"p\">&lt;\/<\/span><span class=\"nt\">div<\/span><span class=\"p\">&gt;<\/span>\n\n    <span class=\"p\">&lt;<\/span><span class=\"nt\">div<\/span> <span class=\"na\">id<\/span><span class=\"o\">=<\/span><span class=\"s\">\"content\"<\/span><span class=\"p\">&gt;<\/span>\n        <span class=\"p\">&lt;<\/span><span class=\"nt\">h2<\/span><span class=\"p\">&gt;<\/span>Entry one<span class=\"p\">&lt;\/<\/span><span class=\"nt\">h2<\/span><span class=\"p\">&gt;<\/span>\n        <span class=\"p\">&lt;<\/span><span class=\"nt\">p<\/span><span class=\"p\">&gt;<\/span>This is my first entry.<span class=\"p\">&lt;\/<\/span><span class=\"nt\">p<\/span><span class=\"p\">&gt;<\/span>\n\n        <span class=\"p\">&lt;<\/span><span class=\"nt\">h2<\/span><span class=\"p\">&gt;<\/span>Entry two<span class=\"p\">&lt;\/<\/span><span class=\"nt\">h2<\/span><span class=\"p\">&gt;<\/span>\n        <span class=\"p\">&lt;<\/span><span class=\"nt\">p<\/span><span class=\"p\">&gt;<\/span>This is my second entry.<span class=\"p\">&lt;\/<\/span><span class=\"nt\">p<\/span><span class=\"p\">&gt;<\/span>\n    <span class=\"p\">&lt;\/<\/span><span class=\"nt\">div<\/span><span class=\"p\">&gt;<\/span>\n<span class=\"p\">&lt;\/<\/span><span class=\"nt\">body<\/span><span class=\"p\">&gt;<\/span>\n<span class=\"p\">&lt;\/<\/span><span class=\"nt\">html<\/span><span class=\"p\">&gt;<\/span>\n<\/pre>\n<\/div>\n<\/div>\n\n\n\n<p>\u6ce8\u610f\uff1a\u5b50\u6a21\u5757\u6ca1\u6709\u5b9a\u4e49<strong>sidebar<\/strong>\u5757\uff0c\u90a3\u4e48\u4f7f\u7528\u7236\u6a21\u677f\u7684\u503c\u6765\u4ee3\u66ff\u3002\u5728\u7236\u6a21\u677f\u7684{% block %}\u6807\u8bb0\u91cc\u7684\u5185\u5bb9\u4e00\u76f4\u662f\u7528\u4e8e\u5907\u7528\u3002<\/p>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528\u4efb\u610f\u591a\u5c42\u7684\u6a21\u677f\u7ee7\u627f\uff0c\u53ea\u8981\u6709\u9700\u8981\u3002\u4f7f\u7528\u7ee7\u627f\u7684\u5e38\u7528\u65b9\u6cd5\u7531\u4e0b\u9762\u4e09\u7ea7\u7ec4\u6210\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521b\u5efa\u4e00\u4e2abase.html\u6a21\u677f\uff0c\u5b83\u4fdd\u5b58\u4e86\u7ad9\u70b9\u4e3b\u8981\u7684\u6784\u67b6\u3002<\/li>\n\n\n\n<li>\u521b\u5efa\u4e00\u4e2abase_SECTIONNAME.html\u6a21\u677f\uff0c\u7528\u4e8e\u7ad9\u70b9\u7684\u6bcf\u4e00\u7ae0\u8282(\u201csection\u201d)\u3002\u4f8b\u5982\uff0cbase_news.html\uff0cbase_sports.html\u3002\u8fd9\u4e9b\u6a21\u677f\u6240\u6709\u90fd\u662fbase.html\u7684\u6269\u5c55\uff0c\u5e76\u5305\u542b\u7684\u4e0d\u540c\u7ae0\u8282\u7684\u98ce\u683c\u8bbe\u8ba1\u3002<\/li>\n\n\n\n<li>\u4e3a\u6bcf\u79cd\u9875\u9762\u521b\u5efa\u72ec\u7acb\u7684\u6a21\u677f\uff0c\u5982\uff1a\u65b0\u95fb\u6216\u662fblog\u3002\u8fd9\u4e9b\u6a21\u677f\u90fd\u662fbase_SECTIONNAME.html\u7684\u9002\u5f53\u6269\u5c55\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u6700\u5927\u7a0b\u5ea6\u7684\u91cd\u7528\u4ee3\u7801\uff0c\u5e76\u4e14\u5f88\u5bb9\u6613\u6dfb\u52a0\u9879\u76ee\u5230\u5171\u4eab\u5185\u5bb9\u533a\u57df\uff0c\u5982\u7ae0\u8282\u5bfc\u822a\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u8fd8\u6709\u4e00\u4e9b\u4f7f\u7528\u7ee7\u627f\u7684\u6280\u5de7\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u5728\u6a21\u677f\u4e2d\u4f7f\u7528\u4e86{% extends %}\uff0c\u5b83\u5fc5\u987b\u5148\u5728\u88ab\u6269\u5c55\u7684\u6a21\u677f\u4e2d\u4f7f\u7528\u6a21\u677f\u6807\u8bb0\uff08<strong>block<\/strong>\uff09\u3002<\/li>\n\n\n\n<li>\u5728\u7236\u6a21\u677f\u4e2d\u6709\u8d8a\u591a\u7684{% block %}\u8d8a\u597d\u3002\u8bb0\u4fe1\uff0c\u5b50\u6a21\u677f\u4e0d\u7528\u586b\u5145\u6240\u6709\u7684\u5728\u7236\u6a21\u677f\u4e2d\u5b9a\u4e49\u7684\u5757\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u4f60\u5728\u6a21\u677f\u4e2d\u53d1\u73b0\u4e86\u91cd\u590d\u5185\u5bb9\uff0c\u8fd9\u53ef\u80fd\u610f\u5473\u7740\u4f60\u5e94\u8be5\u79fb\u52a8\u91cd\u590d\u7684\u5185\u5bb9\u5230\u7236\u7ea7\u6a21\u677f\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u4f60\u9700\u8981\u4ece\u7236\u6a21\u677f\u83b7\u5f97block\u5185\u5bb9\uff0c\u90a3\u4e48{{<strong> block.super<\/strong> }}\u53d8\u91cf\u53ef\u4ee5\u505a\u5230\u3002\u5982\u679c\u4f60\u60f3\u5411\u7236\u7ea7block\u6dfb\u52a0\u5185\u5bb9\uff0c\u800c\u4e0d\u662f\u5b8c\u5168\u8986\u76d6\u5b83\uff0c\u8fd9\u975e\u5e38\u6709\u7528\u3002\u4f7f\u7528{{ block.super }}\u63d2\u5165\u7684\u6570\u636e\u4e0d\u4f1a\u88ab\u81ea\u52a8\u5c55\u5f00\uff0c\u56e0\u4e3a\u5b83\u5df2\u7ecf\u662f\u5c55\u5f00\u5f62\u5f0f\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528\u6a21\u677f\u6807\u8bb0as\u8bed\u6cd5\u5728{% block %}\u5916\u90e8\u5efa\u7acb\u7684\u53d8\u91cf\uff0c\u4e0d\u80fd\u5728block\u5185\u4f7f\u7528\u3002\u4f8b\u5982\uff1a<br><code>{% trans \"Title\" as title %}<br>\n{% block content %}{{ title }}{% endblock %}<\/code><br>\u8fd9\u4e2a\u6a21\u677f\u4e0d\u4f1a\u4ea7\u751f\u4efb\u4f55\u9884\u671f\u6548\u679c<\/li>\n\n\n\n<li>\u989d\u5916\u7684\u6613\u8bfb\u6027\uff0c\u4f60\u53ef\u4ee5\u9009\u62e9\u6027\u7684\u7ed9\u4e8e{% endblock %}\u6807\u8bb0\u4e00\u4e2a\u540d\u5b57\uff1a<br><code>{% block content %}<br>\n...<br>\n{% endblock content %}<\/code><br>\u5728\u4e00\u4e2a\u5927\u578b\u7684\u6a21\u677f\u4e2d\uff0c\u8fd9\u4e2a\u6280\u672f\u53ef\u4ee5\u5e2e\u4f60\u6e05\u6670\u7684\u770b\u5230\u54ea\u4e2a{% block %}\u6807\u8bb0\u5df2\u7ecf\u7ed3\u675f\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6700\u540e\uff0c\u6ce8\u610f\u4f60\u4e0d\u80fd\u5728\u540c\u4e00\u4e2a\u6a21\u677f\u4e2d\u5b9a\u4e49\u591a\u4e2a\u540c\u540dblock\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u6ce8\u91ca<\/h1>\n\n\n\n<p>\u6ce8\u91ca\u6807\u8bb0{# #}\u3002\u4e24\u4e2a\u4e95\u53f7\u4e4b\u524d\u53ef\u4ee5\u653e\u4efb\u4f55\u5b57\u7b26\uff0c\u4e0d\u8fc7\u53ea\u80fd\u5355\u884c\u3002\u591a\u884c\u8981\u7528\u591a\u884c\u6ce8\u91ca\u6807\u7b7e\u3002<\/p>\n\n\n\n<p>{% comment %}&#8230;{% endcomment %}<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">HTML\u81ea\u52a8\u8f6c\u4e49<\/h1>\n\n\n\n<p>\u5f53\u4ece\u6a21\u677f\u4ea7\u751fHTML\u65f6\uff0c\u53d8\u91cf\u5305\u542b\u7684\u5b57\u7b26\u4f1a\u5f71\u54cdHTML\u7684\u7ed3\u679c\uff0c\u8fd9\u4e00\u76f4\u662f\u4e2a\u5a01\u80c1\u3002\u4f8b\u5982\uff0c\u8003\u8651\u8fd9\u4e2a\u6a21\u677f\u6846\u67b6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">Hello, {{ name }}\n<\/pre>\n\n\n\n<p>\u9996\u5148\uff0c\u5bf9\u4e8e\u663e\u793a\u7528\u6237\u540d\u6765\u8bf4\u8fd9\u770b\u8d77\u6765\u5e76\u4e0d\u662f\u5371\u9669\u7684\u64cd\u4f5c\uff0c\u4f46\u662f\u8003\u8651\u4e00\u4e0b\u5982\u679c\u7528\u6237\u8f93\u5165\u4ee5\u4e0b\u5185\u5bb9\u4e3a\u4ed6\u4eec\u7684\u540d\u5b57\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;script&gt;alert('hello')&lt;\/script&gt;\n<\/pre>\n\n\n\n<p>\u4f7f\u7528\u8fd9\u4e2a\u505a\u4e3a\u540d\u5b57\u503c\u65f6\uff0c\u6a21\u677f\u4f1a\u53d8\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">Hello, &lt;scrip&gt;alert('hello')&lt;\/script&gt;\n<\/pre>\n\n\n\n<p>\u8fd9\u610f\u5473\u7740\u6d4f\u89c8\u5668\u4f1a\u5f39\u51fa\u4e00\u4e2aJavaScript\u8b66\u544a\u7a97\u53e3\uff01<br>\u7c7b\u4f3c\u7684\uff0c\u5982\u679c\u540d\u5b57\u4e2d\u5305\u542b\u4e86\u2018&lt;\u2019\u53f7\uff0c\u4f1a\u600e\u4e48\u6837\uff1f\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;b&gt;username\n<\/pre>\n\n\n\n<p>\u9875\u9762\u4f1a\u4fdd\u7559\u7c97\u4f53\u5b57\u3002<\/p>\n\n\n\n<p>\u7528\u6237\u63d0\u4ea4\u7684\u6570\u636e\u4e0d\u80fd\u76f2\u76ee\u7684\u88ab\u4fe1\u4efb\u5e76\u76f4\u63a5\u63d2\u5165\u5230\u4f60\u7684\u9875\u9762\u4e0a\uff0c\u56e0\u4e3a\u4e00\u4e2a\u6076\u610f\u7528\u6237\u53ef\u80fd\u4f7f\u7528\u8fd9\u7c7b\u6f0f\u6d1e\u505a\u4e00\u4e9b\u6f5c\u5728\u574f\u4e8b\u3002\u8fd9\u7c7b\u5b89\u5168\u95ee\u9898\u88ab\u53eb\u505a\uff1aCross Site Scripting(XSS)\u653b\u51fb\u3002<\/p>\n\n\n\n<p>\u907f\u514d\u8fd9\u7c7b\u95ee\u9898\u4f60\u6709\u4e24\u4e2a\u9009\u62e9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\uff0c\u901a\u8fc7escape\u8fc7\u6ee4\u5668\u8fd0\u884c\u8fd9\u4e9b\u4e0d\u88ab\u4fe1\u4efb\u7684\u53d8\u91cf\uff0c\u5b83\u53ef\u4ee5\u8f6c\u6362\u6f5c\u5728HTML\u5a01\u80c1\u5b57\u7b26\u5230\u65e0\u5a01\u80c1\u72b6\u6001\u3002\u524d\u4e9b\u5e74\u5728DJANGO\u4e2d\u8fd9\u662f\u9ed8\u8ba4\u7684\u89e3\u51b3\u65b9\u6cd5\uff0c\u4f46\u662f\u8fd9\u628a\u8d23\u4efb\u8f6c\u7ed9\u4e86\u5f00\u53d1\u8005\uff0c\u5f00\u53d1\u8005\u5f88\u5bb9\u6613\u5fd8\u8bb0\u8f6c\u6362\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u4e8c\uff0c\u4f7f\u7528Django\u7684\u81ea\u52a8HTML\u8f6c\u4e49\uff08escaping\uff09\u7279\u6027\u3002\u672c\u8282\u5269\u4e0b\u90e8\u5206\u63cf\u8ff0\u4e86\u5982\u4f55\u4f7f\u7528\u81ea\u52a8\u5c55\u5f00\u3002<\/li>\n<\/ul>\n\n\n\n<p>Django\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e00\u4e2a\u6a21\u677f\u81ea\u52a8\u7684\u8f6c\u4e49\u6bcf\u4e00\u4e2a\u53d8\u91cf\u6807\u7b7e\u3002\u7279\u4e0b\u9762\u4e94\u79cd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>&lt;<\/strong>\u8f6c\u6362\u6210<strong>&amp;lt;<\/strong><\/li>\n\n\n\n<li><strong>&gt;<\/strong>\u8f6c\u6362\u6210<strong>&amp;gt;<\/strong><\/li>\n\n\n\n<li><strong>&#8216;<\/strong>\uff08\u5355\u5f15\u53f7\uff09\u8f6c\u6362\u6210<strong>&amp;#39;<\/strong><\/li>\n\n\n\n<li><strong>&#8220;<\/strong>\uff08\u53cc\u5f15\u53f7\uff09\u8f6c\u6362\u6210<strong>&amp;quot;<\/strong><\/li>\n\n\n\n<li>&amp;\u8f6c\u6362\u6210<strong>&amp;amp;<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u518d\u6b21\u58f0\u660e\uff0c\u8f6c\u4e49\u5728Django\u7684\u6a21\u677f\u4e2d\u662f\u9ed8\u8ba4\u5f00\u542f\u7684\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5982\u4f55\u5173\u95ed\u5b83<\/h2>\n\n\n\n<p>\u5982\u679c\u4f60\u4e0d\u5e0c\u671b\u6570\u636e\u88ab\u81ea\u52a8\u8f6c\u4e49\uff0c\u53ef\u4ee5\u5728\u7ad9\u70b9\u3001\u6a21\u677f\u6216\u53d8\u91cf\u7ea7\u522b\u4e0a\u5173\u95ed\u5b83\u3002<\/p>\n\n\n\n<p>\u4e3a\u4ec0\u4e48\u8981\u5173\u95ed\u5b83\u5462\uff1f\u56e0\u4e3a\u6709\u65f6\u6a21\u677f\u53d8\u91cf\u5305\u542b\u7684\u6570\u636e\u4f60\u5e0c\u671b\u5c31\u662f\u4ee5\u6e90\u751f\u7684HTML\u53d1\u5e03\u51fa\u6765\uff0c\u5728\u8fd9\u65f6\u4f60\u4e0d\u5e0c\u671b\u5bf9\u5176\u8fdb\u884c\u8f6c\u4e49\u3002\u4f8b\u5982\u4f60\u53ef\u4ee5\u5b58\u50a8HTML\u7684\u7c97\u4f53\u5728\u4f60\u7684\u6570\u636e\u5e93\u4e2d\u5e76\u5e0c\u671b\u5b83\u76f4\u63a5\u5d4c\u5165\u5230\u4f60\u7684\u6a21\u677f\u4e2d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u72ec\u7acb\u53d8\u91cf<\/h3>\n\n\n\n<p>\u5173\u95ed\u81ea\u52a8\u8f6c\u4e49\u4f7f\u7528<strong>safe<\/strong>\u8fc7\u6ee4\u5668\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">This will be escaped: {{ data }}\nThis will not be escaped: {{ data | safe }}\n<\/pre>\n\n\n\n<p>safe\u505a\u4e3asafe from further escaping or can be safely interpreted as HTML\u7684\u901f\u8bb0\u5f62\u5f0f\u3002\u5728\u672c\u4f8b\u4e2d\u5982\u679cdata\u5305\u542b\u4e86'&lt;b&gt;&#8217;\uff0c\u90a3\u4e48\u8f93\u51fa\u5c06\u4f1a\u662f\u76f4\u63a5\u663e\u793a\u51fa\u2018&lt;b&gt;\u2019\u8fd9\u4e09\u4e2a\u5b57\u7b26\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">This will be escaped: <span style=\"color: #999999;\">&lt;<\/span>b<span style=\"color: #999999;\">&gt;<\/span>\n\u4e0b\u9762\u4f7f\u7528\u4e86safe\u8fc7\u6ee4\u5668\uff0c\u8f93\u51fa\u7684\u5b57\u4f53\u4f1a\u662f\u7c97\u4f53\uff08\u4e0b\u9762\u7684&lt;b&gt;\u53ea\u662f\u4e3a\u4e86\u8868\u8fbe\u7c97\u4f53\uff0c\u5e76\u4e0d\u662f\u663e\u793a\u7684\u5185\u5bb9\uff09\uff1a      \nThis will not be escaped:&lt;<span style=\"color: #339966;\">b<\/span>&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6a21\u677f<\/h3>\n\n\n\n<p>\u5728\u6a21\u677f\u4e2d\u63a7\u5236\u81ea\u52a8\u8f6c\u4e49\uff0c\u5728autoescape\u6807\u7b7e\u4e2d\u5305\u542b\u6a21\u677f\uff08\u6216\u662f\u6a21\u677f\u7684\u7279\u5b9a\u7ae0\u8282\uff09\uff0c\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{% <span style=\"color: #339966;\">autoescape<\/span> off %}\n    Hello {{ name }}\n{% <span style=\"color: #339966;\">endautoescape<\/span> %}\n<\/pre>\n\n\n\n<p><strong>autoescape<\/strong>\u6807\u7b7e\u53ef\u4ee5\u4f7f\u7528<strong>on<\/strong>\u6216<strong>off<\/strong>\u505a\u4e3a\u53c2\u6570\u3002\u8fd9\u6709\u4e00\u4e2a\u6a21\u677f\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">auto-escaping is on by default. Hello&nbsp; {{ name }}\n\n{% autoescape off %}\n    This will not be auto-escaped: {{ data }}.\n\n    Nor this: {{ other_data }}\n    {% autoescape on %}\n        Auto-escaping applies again: {{ name }}\n    {% endautoescape %}\n{% endautoescape %}\n<\/pre>\n\n\n\n<p>\u81ea\u52a8\u8f6c\u4e49\u6807\u7b7e\u53ef\u4ee5\u4f20\u9012\u5b83\u7684\u6548\u679c\u5230\u5b50\u6a21\u677f\u4e2d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6ce8\u610f<\/h3>\n\n\n\n<p>\u4e00\u822c\u6765\u8bf4\uff0c\u6a21\u677f\u7684\u4f5c\u8005\u4e0d\u9700\u8981\u8fc7\u5206\u62c5\u5fc3\u81ea\u52a8\u8f6c\u4e49\u7684\u95ee\u9898\u3002PYTHON\u7aef\u7684\u5f00\u53d1\u8005\u624d\u9700\u8981\u601d\u8003\u54ea\u4e9b\u6570\u636e\u4e0d\u9700\u8981\u88ab\u8f6c\u4e49\u5e76\u9002\u5f53\u7684\u6807\u8bb0\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u5efa\u7acb\u4e86\u4e00\u4e2a\u6a21\u677f\uff0c\u800c\u4e14\u4e0d\u80fd\u786e\u5b9a\u5b83\u4f7f\u7528\u7684\u573a\u666f\u662f\u5426\u5f00\u542f\u4e86\u81ea\u52a8\u8f6c\u4e49\uff0c\u90a3\u4e48\u6dfb\u52a0escape\u8fc7\u6ee4\u5668\u5230\u4efb\u4f55\u9700\u8981\u8f6c\u4e49\u7684\u53d8\u91cf\u4e0a\u3002\u5f53\u81ea\u52a8\u8f6c\u4e49\u662f\u5f00\u542f\u7684\uff0c\u4e0d\u7528\u62c5\u5fc3escape\u8fc7\u6ee4\u5668\u4f1a\u53cc\u91cd\u8f6c\u4e49\u53d8\u91cf\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u5b57\u7b26\u4e32\u548c\u81ea\u52a8\u8f6c\u4e49<\/h1>\n\n\n\n<p>\u4e0a\u9762\u8bf4\u8fc7\uff0c\u8fc7\u6ee4\u5668\u53c2\u6570\u53ef\u4ee5\u662f\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{{ data|default:\"This is a string literal.\" }}\n<\/pre>\n\n\n\n<p>\u6240\u6709\u7684\u5b57\u7b26\u4e32\u4e0d\u4f1a\u5e26\u6709\u4efb\u4f55\u81ea\u52a8\u8f6c\u4e49\u88ab\u63d2\u5165\u5230\u6a21\u677f\u4e2d\uff0c\u5c31\u50cf\u4f7f\u7528\u4e86<code>safe<\/code>\u8fc7\u6ee4\u5668\u4e00\u6837\uff0c\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{{ data | default :3 &amp;lt; 2 }}\n<\/pre>\n\n\n\n<p>\u9875\u9762\u4f1a\u663e\u793a3&lt;2\u3002&amp;\u4e0d\u4f1a\u88ab\u8f6c\u4e49\u6210\u201c&amp;amp;\u201d<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u8bbf\u95ee\u65b9\u6cd5\u8c03\u7528<\/h1>\n\n\n\n<p>\u591a\u6570\u65b9\u6cd5\u662f\u4f9d\u6258\u4e8e\u5bf9\u8c61\u7684\uff0c\u5728\u6a21\u677f\u5185\u90e8\u53ef\u7528\u3002\u8fd9\u610f\u5473\u7740\u6a21\u677f\u53ef\u4ee5\u8bbf\u95ee\u8d85\u8fc7\u5728\u89c6\u56fe\u4e2d\u4f20\u9012\u7684\u7c7b\u5c5e\u6027\u548c\u53d8\u91cf\u7684\u66f4\u591a\u5185\u5bb9\uff08\u5982\uff1a\u5b57\u6bb5\u540d\uff09\u3002\u4f8b\u5982\uff0cDjango ORM \u63d0\u4f9b\u4e86\u2018entry_set\u2019\u8bed\u6cd5\uff0c\u7528\u4e8e\u67e5\u627e\u5728\u5916\u952e\u4e0a\u76f8\u5173\u5bf9\u8c61\u96c6\u5408\u3002\u73b0\u5728\u6709\u4e00\u4e2a\u540d\u4e3a\u201ccomment\u201d\u7684\u6a21\u578b\uff0c\u5b83\u6709\u4e00\u4e2a\u5916\u952e\u5173\u8054\u5230\u4e00\u4e2a\u540d\u4e3a\u201ctask\u201d\u7684\u6a21\u578b\uff0c\u53ef\u4ee5\u901a\u8fc7\u5faa\u73af\uff0c\u4f7f\u6240\u6709\u7684\u201ccomment\u201d\u5173\u8054\u5230\u7684\u201ctask\u201d\u90fd\u88ab\u904d\u5386\u4e00\u6b21\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{% for comment in task.comment_set.all %}\n    {{ comment }}\n{% endfor %}\n<\/pre>\n\n\n\n<p>\u7c7b\u4f3c\u7684\uff0cQuerySets\u63d0\u4f9b\u4e86count()\u65b9\u6cd5\uff0c\u7528\u4e8e\u7edf\u8ba1\u5b83\u4eec\u5305\u542b\u7684\u5bf9\u8c61\u6570\u91cf\u3002\u56e0\u6b64\u4f60\u53ef\u4ee5\u83b7\u5f97\u6240\u6709comment\u5173\u8054task\u6a21\u578b\u7684\u6570\u91cf\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">  {{ task.comment_set.all.count }}\n<\/pre>\n\n\n\n<p>\u5e76\u4e14\u4f60\u53ef\u4ee5\u8bbf\u95ee\u81ea\u5df1\u663e\u793a\u5b9a\u4e49\u5728\u6a21\u578b\u4e0a\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u6a21\u578b\u4e0a\u7684\u65b9\u6cd5\n<span style=\"color: #339966;\">models.py<\/span>\nclass Task(models.Model):\n    def foo(self):\n        return \"bar\"\n<\/pre>\n\n\n\n<pre class=\"wp-block-preformatted\">\u6a21\u677f\u8bbf\u95ee\n<span style=\"color: #339966;\">template.html<\/span>\n{{ task.foo }}\n<\/pre>\n\n\n\n<p>\u56e0\u4e3aDjango\u503e\u5411\u4e8e\u9650\u5236\u6a21\u677f\u8bed\u8a00\u4e2d\u53ef\u7528\u903b\u8f91\u8fdb\u7a0b\u7684\u603b\u6570\uff0c\u6240\u4ee5\u5728\u6a21\u677f\u4e2d\u4e0d\u53ef\u80fd\u4f20\u9001\u53c2\u6570\u5230\u88ab\u8c03\u7528\u7684\u65b9\u6cd5\u3002\u6570\u636e\u5e94\u8be5\u5728\u89c6\u56fe\u4e2d\u8ba1\u7b97\uff0c\u7136\u540e\u4f20\u9001\u5230\u6a21\u677f\u4e2d\u7528\u4e8e\u663e\u793a\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u81ea\u5b9a\u4e49\u6807\u8bb0\u548c\u8fc7\u6ee4\u5668\u5e93<\/h1>\n\n\n\n<p>\u67d0\u4e9b\u5e94\u7528\u63d0\u4f9b\u4e86\u81ea\u5b9a\u4e49\u6807\u8bb0\u548c\u8fc7\u6ee4\u5668\u5e93\u3002\u5728\u6a21\u677f\u4e2d\u8bbf\u95ee\u5b83\u4eec\uff0c\u786e\u5b9a\u5e94\u7528\u5728INSTALLED_APPS\u4e2d\uff08\u672c\u4f8b\u6211\u4eec\u7528&#8217;django.contrib.humanize&#8217;\uff09\uff0c\u7136\u540e\u5728\u6a21\u677f\u4f7f\u7528<code>load<\/code>\u6807\u7b7e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{% load humanize %}\n{{ 45000 | intcomma }}\n<\/pre>\n\n\n\n<p>\u5728\u4e0a\u9762\uff0c<code>load<\/code>\u6807\u7b7e\u52a0\u8f7d\u4e86humanize\u6807\u7b7e\u5e93\uff0c\u7136\u540e\u4f7f\u7528\u5b83\u7684<code>intcomma<\/code>\u8fc7\u6ee4\u5668\u3002\u5982\u679c\u5df2\u7ecf\u5f00\u542f\u4e86django.contrib.admindocs\uff0c\u4f60\u80fd\u4f7f\u7528\u7ba1\u7406\u5458\u67e5\u627e\u6587\u6863\uff0c\u5217\u51fa\u5df2\u7ecf\u5b89\u88c5\u81ea\u5b9a\u4e49\u5e93\u3002<br><code>load<\/code>\u6807\u8bb0\u80fd\u4f7f\u7528\u591a\u4e2a\u5e93\u540d\uff0c\u7528\u7a7a\u683c\u5206\u9694\u3002\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">{% load humanize i18n %}<\/pre>\n\n\n\n<p>See <a class=\"reference internal\" href=\"https:\/\/docs.djangoproject.com\/en\/2.1\/howto\/custom-template-tags\/\"><span class=\"doc\">Custom template tags and filters<\/span><\/a> for information on writing your own custom template libraries.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u81ea\u5b9a\u4e49\u5e93\u548c\u6a21\u677f\u7ee7\u627f<\/h1>\n\n\n\n<p>\u5f53\u52a0\u8f7d\u4e86\u4e00\u4e2a\u81ea\u5b9a\u4e49\u6807\u7b7e\u6216\u8fc7\u6ee4\u5668\u5e93\u540e\uff0c\u6807\u7b7e\u3001\u8fc7\u6ee4\u5668\u53ea\u5728\u5f53\u524d\u7684\u6a21\u677f\u53ef\u7528\u2014\u2014\u4e0d\u4f1a\u5c5e\u4e8e\u4efb\u4f55\u7236\u6216\u5b50\u6a21\u677f\u7684\u7ee7\u627f\u8def\u5f84\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6a21\u677ffoo.html\u5305\u542b{% load humanize %}\uff0c\u5b83\u7684\u5b50\u6a21\u677f\u5c06\u4e0d\u80fd\u8bbf\u95eehumanize\u6a21\u677f\u7684\u6807\u8bb0\u548c\u8fc7\u6ee4\u5668\u3002\u5b50\u6a21\u677f\u53ea\u80fd\u4f7f\u7528\u5b83\u81ea\u5df1\u7684{% load humanize %}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Django\u6a21\u677f\u7cfb\u7edf\u63d0\u4f9b\u4e86\u7c7b\u4f3c\u7f16\u7a0b\u7ed3\u6784\u7684\u6807\u7b7e\u2014\u2014if\u7528\u4e8e\u5e03\u5c14\u6d4b\u8bd5\uff1bfor\u7528\u4e8e\u5faa\u73af\u7b49\u7b49\u3002\u4f46\u8fd9\u5e76\u4e0d\u662f\u7b80\u5355\u7684\u6267\u884cpython\u4ee3\u7801\uff0c\u800c\u4e14\u6a21\u677f\u7cfb\u7edf\u4e0d\u80fd\u6267\u884c\u4efb\u610fpython&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.5x44.cn\/?p=1193\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[52],"tags":[],"class_list":["post-1193","post","type-post","status-publish","format-standard","hentry","category-django"],"_links":{"self":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/1193","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1193"}],"version-history":[{"count":26,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/1193\/revisions"}],"predecessor-version":[{"id":7506,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/1193\/revisions\/7506"}],"wp:attachment":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}