{"id":5871,"date":"2022-04-03T13:06:45","date_gmt":"2022-04-03T05:06:45","guid":{"rendered":"https:\/\/egonlin.com\/?p=5871"},"modified":"2022-04-26T14:34:22","modified_gmt":"2022-04-26T06:34:22","slug":"07-01-%e5%85%b6%e4%bb%96%e5%8a%9f%e8%83%bd%e7%bb%84","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=5871","title":{"rendered":"07-01 \u5176\u4ed6\u529f\u80fd\u7ec4"},"content":{"rendered":"<h1>\u5176\u4ed6\u529f\u80fd\u7ec4\u4ef6<\/h1>\n<h2>1\u3001\u8fc7\u6ee4Filtering<\/h2>\n<p>\u5bf9\u4e8e\u5217\u8868\u6570\u636e\u53ef\u80fd\u9700\u8981\u6839\u636e\u5b57\u6bb5\u8fdb\u884c\u8fc7\u6ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0django-fitlter\u6269\u5c55\u6765\u589e\u5f3a\u652f\u6301\u3002<\/p>\n<pre><code class=\"language-shel\">pip install django-filter<\/code><\/pre>\n<p>\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u589e\u52a0\u8fc7\u6ee4\u540e\u7aef\u7684\u8bbe\u7f6e\uff1a<\/p>\n<pre><code class=\"language-python\">INSTALLED_APPS = [\n    ...\n    &#039;django_filters&#039;,  # \u9700\u8981\u6ce8\u518c\u5e94\u7528\uff0c\n]\n\nREST_FRAMEWORK = {\n    ...\n    &#039;DEFAULT_FILTER_BACKENDS&#039;: (&#039;django_filters.rest_framework.DjangoFilterBackend&#039;,)\n}<\/code><\/pre>\n<p>\u5728\u89c6\u56fe\u4e2d\u6dfb\u52a0filter_fields\u5c5e\u6027\uff0c\u6307\u5b9a\u53ef\u4ee5\u8fc7\u6ee4\u7684\u5b57\u6bb5<\/p>\n<pre><code class=\"language-python\">class BookListView(ListAPIView):\n    queryset = BookInfo.objects.all()\n    serializer_class = BookInfoSerializer\n    filter_fields = (&#039;btitle&#039;, &#039;bread&#039;)\n\n# 127.0.0.1:8000\/books\/?btitle=\u897f\u6e38\u8bb0<\/code><\/pre>\n<h2>2\u3001\u6392\u5e8f<\/h2>\n<p>\u5bf9\u4e8e\u5217\u8868\u6570\u636e\uff0cREST framework\u63d0\u4f9b\u4e86<strong>OrderingFilter<\/strong>\u8fc7\u6ee4\u5668\u6765\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u6307\u660e\u6570\u636e\u6309\u7167\u6307\u5b9a\u5b57\u6bb5\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<h4>\u4f7f\u7528\u65b9\u6cd5\uff1a<\/h4>\n<p>\u5728\u7c7b\u89c6\u56fe\u4e2d\u8bbe\u7f6efilter_backends\uff0c\u4f7f\u7528<code>rest_framework.filters.OrderingFilter<\/code>\u8fc7\u6ee4\u5668\uff0cREST framework\u4f1a\u5728\u8bf7\u6c42\u7684\u67e5\u8be2\u5b57\u7b26\u4e32\u53c2\u6570\u4e2d\u68c0\u67e5\u662f\u5426\u5305\u542b\u4e86ordering\u53c2\u6570\uff0c\u5982\u679c\u5305\u542b\u4e86ordering\u53c2\u6570\uff0c\u5219\u6309\u7167ordering\u53c2\u6570\u6307\u660e\u7684\u6392\u5e8f\u5b57\u6bb5\u5bf9\u6570\u636e\u96c6\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<p>\u524d\u7aef\u53ef\u4ee5\u4f20\u9012\u7684ordering\u53c2\u6570\u7684\u53ef\u9009\u5b57\u6bb5\u503c\u9700\u8981\u5728ordering_fields\u4e2d\u6307\u660e\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"language-python\">class BookListView(ListAPIView):\n    queryset = BookInfo.objects.all()\n    serializer_class = BookInfoSerializer\n    filter_backends = [OrderingFilter]\n    ordering_fields = (&#039;id&#039;, &#039;bread&#039;, &#039;bpub_date&#039;)\n\n# 127.0.0.1:8000\/books\/?ordering=-bread<\/code><\/pre>\n<h2>3\u3001\u5206\u9875Pagination<\/h2>\n<p>REST framework\u63d0\u4f9b\u4e86\u5206\u9875\u7684\u652f\u6301\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e\u5168\u5c40\u7684\u5206\u9875\u65b9\u5f0f\uff0c\u5982\uff1a<\/p>\n<pre><code class=\"language-python\">REST_FRAMEWORK = {\n    &#039;DEFAULT_PAGINATION_CLASS&#039;:  &#039;rest_framework.pagination.PageNumberPagination&#039;,\n    &#039;PAGE_SIZE&#039;: 100  # \u6bcf\u9875\u6570\u76ee\n}<\/code><\/pre>\n<p>\u4e5f\u53ef\u901a\u8fc7\u81ea\u5b9a\u4e49Pagination\u7c7b\uff0c\u6765\u4e3a\u89c6\u56fe\u6dfb\u52a0\u4e0d\u540c\u5206\u9875\u884c\u4e3a\u3002\u5728\u89c6\u56fe\u4e2d\u901a\u8fc7<code>pagination_clas<\/code>\u5c5e\u6027\u6765\u6307\u660e\u3002<\/p>\n<pre><code class=\"language-python\">class LargeResultsSetPagination(PageNumberPagination):\n    page_size = 1000\n    page_size_query_param = &#039;page_size&#039;\n    max_page_size = 10000\nclass BookDetailView(RetrieveAPIView):\n    queryset = BookInfo.objects.all()\n    serializer_class = BookInfoSerializer\n    pagination_class = LargeResultsSetPagination<\/code><\/pre>\n<p><strong>\u6ce8\u610f\uff1a\u5982\u679c\u5728\u89c6\u56fe\u5185\u5173\u95ed\u5206\u9875\u529f\u80fd\uff0c\u53ea\u9700\u5728\u89c6\u56fe\u5185\u8bbe\u7f6e<\/strong><\/p>\n<pre><code class=\"language-python\">pagination_class = None<\/code><\/pre>\n<h2>4\u3001\u53ef\u9009\u5206\u9875\u5668<\/h2>\n<p>1\uff09 <strong>PageNumberPagination<\/strong><\/p>\n<p>\u524d\u7aef\u8bbf\u95ee\u7f51\u5740\u5f62\u5f0f\uff1a<\/p>\n<pre><code class=\"language-http\">GET  http:\/\/api.example.org\/books\/?page=4<\/code><\/pre>\n<p>\u53ef\u4ee5\u5728\u5b50\u7c7b\u4e2d\u5b9a\u4e49\u7684\u5c5e\u6027\uff1a<\/p>\n<ul>\n<li>page_size \u6bcf\u9875\u6570\u76ee<\/li>\n<li>page_query_param \u524d\u7aef\u53d1\u9001\u7684\u9875\u6570\u5173\u952e\u5b57\u540d\uff0c\u9ed8\u8ba4\u4e3a&quot;page&quot;<\/li>\n<li>page_size_query_param \u524d\u7aef\u53d1\u9001\u7684\u6bcf\u9875\u6570\u76ee\u5173\u952e\u5b57\u540d\uff0c\u9ed8\u8ba4\u4e3aNone<\/li>\n<li>max_page_size \u524d\u7aef\u6700\u591a\u80fd\u8bbe\u7f6e\u7684\u6bcf\u9875\u6570\u91cf<\/li>\n<\/ul>\n<pre><code class=\"language-python\">from rest_framework.pagination import PageNumberPagination\n\nclass StandardPageNumberPagination(PageNumberPagination):\n    page_size_query_param = &#039;page_size&#039;\n    max_page_size = 10\n\nclass BookListView(ListAPIView):\n    queryset = BookInfo.objects.all().order_by(&#039;id&#039;)\n    serializer_class = BookInfoSerializer\n    pagination_class = StandardPageNumberPagination\n\n# 127.0.0.1\/books\/?page=1&amp;page_size=2<\/code><\/pre>\n<p>2\uff09<strong>LimitOffsetPagination<\/strong><\/p>\n<p>\u524d\u7aef\u8bbf\u95ee\u7f51\u5740\u5f62\u5f0f\uff1a<\/p>\n<pre><code class=\"language-http\">GET http:\/\/api.example.org\/books\/?limit=100&amp;offset=400<\/code><\/pre>\n<p>\u53ef\u4ee5\u5728\u5b50\u7c7b\u4e2d\u5b9a\u4e49\u7684\u5c5e\u6027\uff1a<\/p>\n<ul>\n<li>default_limit \u9ed8\u8ba4\u9650\u5236\uff0c\u9ed8\u8ba4\u503c\u4e0e<code>PAGE_SIZE<\/code>\u8bbe\u7f6e\u4e00\u76f4<\/li>\n<li>limit_query_param limit\u53c2\u6570\u540d\uff0c\u9ed8\u8ba4&#8217;limit&#8217;<\/li>\n<li>offset_query_param offset\u53c2\u6570\u540d\uff0c\u9ed8\u8ba4&#8217;offset&#8217;<\/li>\n<li>max_limit \u6700\u5927limit\u9650\u5236\uff0c\u9ed8\u8ba4None<\/li>\n<\/ul>\n<pre><code class=\"language-python\">from rest_framework.pagination import LimitOffsetPagination\n\nclass BookListView(ListAPIView):\n    queryset = BookInfo.objects.all().order_by(&#039;id&#039;)\n    serializer_class = BookInfoSerializer\n    pagination_class = LimitOffsetPagination\n\n# 127.0.0.1:8000\/books\/?offset=3&amp;limit=2<\/code><\/pre>\n<h2>5\u3001\u5f02\u5e38\u5904\u7406 Exceptions<\/h2>\n<p><\/p><div id=\"rml_readmorelogin_placeholder\" style=\"position:relative;\"><div id=\"rml_fade_content\" style=\"position: absolute;\r\ntop:-10em;\r\nwidth:100%;\r\nheight:10em;\r\nbackground: -webkit-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -moz-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -o-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -ms-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\"><\/div><div class=\"wpf-controller aru_rml_from_in_post\" style=\"background-color:#eeeeee;border:5px solid #cce6ff;\" id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><h2 id=\"Header\">\u67e5\u770b\u66f4\u591a<\/h2><div id=\"Message\"><p>\u8054\u7cfb\u7ba1\u7406\u5458\u5fae\u4fe1tutu19192010\uff0c\u6ce8\u518c\u8d26\u53f7<\/p>\n<\/div><div id=\"StatusBarHeader\"><\/div><form id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><input name=\"post_id\" value=\"5871\" type=\"hidden\"\/><input name=\"_init_callback\" value=\"InitLogin\" type=\"hidden\"\/><input name=\"post_id\" value=\"5871\" type=\"hidden\"\/><input name=\"rt_ype\" value=\"1\" type=\"hidden\"\/><input name=\"nonce\" value=\"5170d79161\" type=\"hidden\"\/><input name=\"_wpnonce\" value=\"ee095c8387\" type=\"hidden\"\/><input name=\"_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_proxy_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_view\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginView\" type=\"hidden\"\/><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\" width=\"400px\"><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Username:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"username\" value=\"\" type=\"text\"\/><\/td><\/tr><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Password:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"password\" value=\"\" type=\"password\"\/><\/td><\/tr><\/tbody><\/table><p class=\"wpf-table-placeholder submit\"><button class=\"wp_plugin_framework_ajax_button\" type=\"button\" style=\"background-color:#4D90FE;;color:#ffffff;;border:1px solid #3079ed;\" name=\"_event\" value=\"ButtonLogin\">Log in<\/button><\/p><\/td><td class=\"wpf-table-placeholder-input\"><\/td><\/tr><\/tbody><\/table><\/form><div id=\"ButtonStartRegister\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=register\">Register<\/a><\/div><div id=\"Link1\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=lostpassword\">Forgotten username or password?<\/a><\/div><div id=\"StatusBarFooter\"><\/div><\/div><\/div><div id=aru_remaining_content><\/div>","protected":false},"excerpt":{"rendered":"<p>\u5176\u4ed6\u529f\u80fd\u7ec4\u4ef6 1\u3001\u8fc7\u6ee4Filtering \u5bf9\u4e8e\u5217\u8868\u6570\u636e\u53ef\u80fd\u9700\u8981\u6839\u636e\u5b57\u6bb5\u8fdb\u884c\u8fc7\u6ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0django- [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[394,395],"tags":[],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/5871"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5871"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/5871\/revisions"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}