{"id":1325,"date":"2025-01-25T15:10:45","date_gmt":"2025-01-25T07:10:45","guid":{"rendered":"http:\/\/www.chan.ink\/?p=1325"},"modified":"2025-01-25T15:10:47","modified_gmt":"2025-01-25T07:10:47","slug":"%e3%80%90django%e3%80%91%e4%b8%ba%e6%a8%a1%e5%9e%8b%e7%94%9f%e6%88%90%e8%be%85%e5%8a%a9%e5%ad%97%e6%ae%b5","status":"publish","type":"post","link":"http:\/\/www.chan.ink\/index.php\/2025\/01\/25\/%e3%80%90django%e3%80%91%e4%b8%ba%e6%a8%a1%e5%9e%8b%e7%94%9f%e6%88%90%e8%be%85%e5%8a%a9%e5%ad%97%e6%ae%b5\/","title":{"rendered":"\u3010Django\u3011\u4e3a\u6a21\u578b\u751f\u6210\u8f85\u52a9\u5b57\u6bb5"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u80cc\u666f\uff1a\u6709\u4e00\u4e2a\u4ef7\u683c\u7b56\u7565\u8868\uff0c\u53ea\u6709\u4e24\u4e2a\u5b57\u6bb5\uff0cprice\u548ccount<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u5728\uff0c\u9700\u8981\u8ba1\u7b97\u5355\u4ef7\uff0c\u53caprice\/count<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u7801\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class OrderModelForm(BootStrapForm,forms.ModelForm):\n    class Meta:\n        model = models.Order\n        fields = &#91;'url','count']\n\n    def __init__(self,*args,**kwargs):\n        super().__init__(*args,**kwargs)\n\n        price_count_list = &#91;]\n        text_count_list = &#91;]\n        queryset = models.PricePolicy.objects.all().order_by('count')\n        for item in queryset:\n            unit_price = item.price \/ item.count\n            price_count_list.append(&#91;item.count,\">={} ${}\/\u6761\".format(item.count,unit_price),unit_price])\n            text_count_list.append(\">={} ${}\/\u6761\".format(item.count,unit_price))\n        self.fields&#91;'count'].help_text = \"||\".join(text_count_list)\n        self.price_count_list = price_count_list<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728Django\u4e2d\uff0c<code>self.price_count_list = price_count_list<\/code> \u8fd9\u4e00\u884c\u4ee3\u7801\u7684\u4f5c\u7528\u662f\u4e3a <code>OrderModelForm<\/code> \u5b9e\u4f8b\u6dfb\u52a0\u4e00\u4e2a\u81ea\u5b9a\u4e49\u5c5e\u6027 <code>price_count_list<\/code>\uff0c\u5e76\u5c06\u5176\u503c\u8bbe\u7f6e\u4e3a <code>price_count_list<\/code> \u5217\u8868\u3002\u8fd9\u4e2a\u5c5e\u6027\u5e76\u4e0d\u662f\u8868\u5355\u5b57\u6bb5\uff08\u5982 <code>url<\/code> \u6216 <code>count<\/code>\uff09\uff0c\u800c\u662f\u4e00\u4e2a\u666e\u901a\u7684Python\u5c5e\u6027\uff0c\u7528\u4e8e\u5b58\u50a8\u4e0e\u8868\u5355\u76f8\u5173\u7684\u989d\u5916\u6570\u636e\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8be6\u7ec6\u89e3\u91ca\uff1a<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong><code>price_count_list<\/code> \u7684\u751f\u6210<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728 <code>__init__<\/code> \u65b9\u6cd5\u4e2d\uff0c\u4ee3\u7801\u9996\u5148\u67e5\u8be2\u4e86 <code>PricePolicy<\/code> \u6a21\u578b\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309 <code>count<\/code> \u5b57\u6bb5\u6392\u5e8f\u3002<\/li>\n\n\n\n<li>\u7136\u540e\uff0c\u4ee3\u7801\u904d\u5386\u8fd9\u4e9b\u8bb0\u5f55\uff0c\u8ba1\u7b97\u6bcf\u6761\u8bb0\u5f55\u7684\u5355\u4ef7\uff08<code>unit_price = item.price \/ item.count<\/code>\uff09\uff0c\u5e76\u5c06\u76f8\u5173\u4fe1\u606f\u5b58\u50a8\u5728 <code>price_count_list<\/code> \u5217\u8868\u4e2d\u3002<\/li>\n\n\n\n<li><code>price_count_list<\/code> \u662f\u4e00\u4e2a\u5217\u8868\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5143\u7d20\u4e5f\u662f\u4e00\u4e2a\u5217\u8868\uff0c\u5305\u542b\u4e09\u4e2a\u90e8\u5206\uff1a\n<ul class=\"wp-block-list\">\n<li><code>item.count<\/code>\uff1a\u8868\u793a\u6570\u91cf\u3002<\/li>\n\n\n\n<li>\u4e00\u4e2a\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u5982 <code>\">={} ${}\/\u6761\"<\/code>\uff0c\u7528\u4e8e\u663e\u793a\u7ed9\u7528\u6237\u3002<\/li>\n\n\n\n<li><code>unit_price<\/code>\uff1a\u8868\u793a\u5355\u4ef7\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong><code>self.price_count_list = price_count_list<\/code><\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e00\u884c\u4ee3\u7801\u5c06 <code>price_count_list<\/code> \u5217\u8868\u8d4b\u503c\u7ed9 <code>self.price_count_list<\/code>\u3002<\/li>\n\n\n\n<li><code>self<\/code> \u6307\u7684\u662f\u5f53\u524d <code>OrderModelForm<\/code> \u7684\u5b9e\u4f8b\u3002<\/li>\n\n\n\n<li>\u901a\u8fc7\u8fd9\u884c\u4ee3\u7801\uff0c<code>price_count_list<\/code> \u5217\u8868\u88ab\u5b58\u50a8\u4e3a <code>OrderModelForm<\/code> \u5b9e\u4f8b\u7684\u4e00\u4e2a\u5c5e\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4e3a\u4ec0\u4e48\u9700\u8981\u8fd9\u4e2a\u5c5e\u6027<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u5c5e\u6027\u53ef\u4ee5\u5728\u8868\u5355\u7684\u5176\u4ed6\u65b9\u6cd5\u6216\u6a21\u677f\u4e2d\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u80fd\u5e0c\u671b\u5728\u6a21\u677f\u4e2d\u663e\u793a\u8fd9\u4e9b\u4ef7\u683c\u4fe1\u606f\uff0c\u6216\u8005\u5728\u8868\u5355\u7684\u9a8c\u8bc1\u903b\u8f91\u4e2d\u4f7f\u7528\u8fd9\u4e9b\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u7531\u4e8e <code>price_count_list<\/code> \u4e0d\u662f\u8868\u5355\u5b57\u6bb5\uff0c\u5b83\u4e0d\u4f1a\u76f4\u63a5\u663e\u793a\u5728\u8868\u5355\u4e2d\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7 <code>self.price_count_list<\/code> \u5728\u8868\u5355\u7684\u5176\u4ed6\u90e8\u5206\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4e0e\u8868\u5355\u5b57\u6bb5\u7684\u533a\u522b<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8868\u5355\u5b57\u6bb5\uff08\u5982 <code>url<\/code> \u548c <code>count<\/code>\uff09\u662f\u7528\u6237\u5728\u8868\u5355\u4e2d\u76f4\u63a5\u8f93\u5165\u6216\u9009\u62e9\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li><code>price_count_list<\/code> \u662f\u4e00\u4e2a\u8f85\u52a9\u5c5e\u6027\uff0c\u7528\u4e8e\u5b58\u50a8\u4e0e\u8868\u5355\u76f8\u5173\u7684\u989d\u5916\u4fe1\u606f\uff0c\u8fd9\u4e9b\u4fe1\u606f\u901a\u5e38\u4e0d\u4f1a\u7531\u7528\u6237\u76f4\u63a5\u8f93\u5165\uff0c\u4f46\u53ef\u80fd\u5728\u8868\u5355\u7684\u5904\u7406\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u793a\u4f8b\u4f7f\u7528\u573a\u666f\uff1a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe\u4f60\u5e0c\u671b\u5728\u6a21\u677f\u4e2d\u663e\u793a\u8fd9\u4e9b\u4ef7\u683c\u4fe1\u606f\uff0c\u4f60\u53ef\u4ee5\u5728\u89c6\u56fe\u51fd\u6570\u4e2d\u5c06\u8868\u5355\u5b9e\u4f8b\u4f20\u9012\u7ed9\u6a21\u677f\uff0c\u7136\u540e\u5728\u6a21\u677f\u4e2d\u8bbf\u95ee <code>price_count_list<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># views.py\ndef my_view(request):\n    form = OrderModelForm()\n    return render(request, 'my_template.html', {'form': form})<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!-- my_template.html --&gt;\n&lt;form method=\"post\"&gt;\n    {% csrf_token %}\n    {{ form.as_p }}\n    &lt;ul&gt;\n        {% for item in form.price_count_list %}\n            &lt;li&gt;{{ item.1 }}&lt;\/li&gt;\n        {% endfor %}\n    &lt;\/ul&gt;\n    &lt;button type=\"submit\"&gt;Submit&lt;\/button&gt;\n&lt;\/form&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>form.price_count_list<\/code> \u88ab\u7528\u6765\u5728\u6a21\u677f\u4e2d\u663e\u793a\u4ef7\u683c\u4fe1\u606f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3\uff1a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>self.price_count_list = price_count_list<\/code> \u8fd9\u4e00\u884c\u4ee3\u7801\u7684\u4f5c\u7528\u662f\u4e3a <code>OrderModelForm<\/code> \u5b9e\u4f8b\u6dfb\u52a0\u4e00\u4e2a\u81ea\u5b9a\u4e49\u5c5e\u6027\uff0c\u7528\u4e8e\u5b58\u50a8\u4e0e\u8868\u5355\u76f8\u5173\u7684\u989d\u5916\u6570\u636e\u3002\u8fd9\u4e2a\u5c5e\u6027\u53ef\u4ee5\u5728\u8868\u5355\u7684\u5176\u4ed6\u65b9\u6cd5\u6216\u6a21\u677f\u4e2d\u4f7f\u7528\uff0c\u4f46\u5b83\u672c\u8eab\u5e76\u4e0d\u662f\u4e00\u4e2a\u8868\u5355\u5b57\u6bb5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u80cc\u666f\uff1a\u6709\u4e00\u4e2a\u4ef7\u683c\u7b56\u7565\u8868\uff0c\u53ea\u6709\u4e24\u4e2a\u5b57\u6bb5\uff0cprice\u548ccount \u73b0\u5728\uff0c\u9700\u8981\u8ba1\u7b97\u5355\u4ef7\uff0c\u53caprice\/count \u4ee3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1325","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/1325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/comments?post=1325"}],"version-history":[{"count":1,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/1325\/revisions"}],"predecessor-version":[{"id":1326,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/posts\/1325\/revisions\/1326"}],"wp:attachment":[{"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/media?parent=1325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/categories?post=1325"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.chan.ink\/index.php\/wp-json\/wp\/v2\/tags?post=1325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}