{"id":22975,"date":"2024-11-21T09:38:54","date_gmt":"2024-11-21T01:38:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/22975\/"},"modified":"2024-11-21T09:38:54","modified_gmt":"2024-11-21T01:38:54","slug":"laravel%e5%88%86%e7%bb%84%e6%9f%a5%e8%af%a2%e5%89%8d%e5%87%a0%e6%9d%a1%e8%ae%b0%e5%bd%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/22975\/","title":{"rendered":"Laravel\u5206\u7ec4\u67e5\u8be2\u524d\u51e0\u6761\u8bb0\u5f55"},"content":{"rendered":"

\u5728laravel\u4e2d\uff0c\u6211\u4eec\u65f6\u5e38\u9700\u8981\u4ece\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u524d\u51e0\u6761\u8bb0\u5f55\uff0c\u4f8b\u5982\u67e5\u8be2\u4e00\u4e2a\u5546\u54c1\u5206\u7c7b\u4e0b\u9500\u91cf\u524d\u4e94\u7684\u5546\u54c1\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u901a\u5e38\u4f1a\u4f7f\u7528\u5206\u7ec4\u67e5\u8be2\u6765\u5b9e\u73b0\u3002<\/p>\n

\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728Laravel\u4e2d\u8fdb\u884c\u5206\u7ec4\u67e5\u8be2\uff0c\u5e76\u67e5\u8be2\u6bcf\u7ec4\u7684\u524d\u51e0\u6761\u8bb0\u5f55\u3002<\/p>\n

    \n
  1. \u51c6\u5907\u5de5\u4f5c<\/li>\n<\/ol>\n

    \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u6709\u4e00\u4e2a\u6570\u636e\u8868\u6765\u5b58\u50a8\u5546\u54c1\u4fe1\u606f\u3002\u5047\u8bbe\u6211\u4eec\u5df2\u7ecf\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a\u201cproducts\u201d\u7684\u6570\u636e\u8868\uff0c\u5e76\u63d2\u5165\u4e86\u4e00\u4e9b\u6570\u636e\u3002<\/p>\n

      \n
    1. \u7f16\u5199\u67e5\u8be2\u8bed\u53e5<\/li>\n<\/ol>\n

      \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Laravel\u7684\u67e5\u8be2\u6784\u5efa\u5668\u6765\u7f16\u5199\u67e5\u8be2\u8bed\u53e5\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u5546\u54c1\u6309\u5206\u7c7b\u8fdb\u884c\u5206\u7ec4\uff0c\u7136\u540e\u518d\u67e5\u8be2\u6bcf\u7ec4\u7684\u524d\u4e94\u4e2a\u5546\u54c1\u3002\u67e5\u8be2\u8bed\u53e5\u5982\u4e0b\uff1a<\/p>\n

      $products = DB::table('products')\n            -&gt;select('category', DB::raw('MAX(sales) as max_sales'))\n            -&gt;groupBy('category')\n            -&gt;orderByDesc('max_sales')\n            -&gt;limit(5)\n            -&gt;get();<\/pre>\n
        \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
      \u8fd9\u91cc\u6211\u4eec\u4f7f\u7528\u4e86select()\u65b9\u6cd5\u6765\u6307\u5b9a\u8981\u67e5\u8be2\u7684\u5b57\u6bb5\uff0c\u540c\u65f6\u4f7f\u7528\u4e86DB::raw()\u65b9\u6cd5\u6765\u8ba1\u7b97\u6bcf\u7ec4\u7684\u6700\u5927\u9500\u91cf\u3002groupBy()\u65b9\u6cd5\u6307\u5b9a\u6309\u5206\u7c7b\u5b57\u6bb5\u8fdb\u884c\u5206\u7ec4\uff0corderByDesc()\u65b9\u6cd5\u6309\u6700\u5927\u9500\u91cf\u964d\u5e8f\u6392\u5e8f\uff0climit()\u65b9\u6cd5\u9650\u5236\u67e5\u8be2\u7684\u8bb0\u5f55\u6570\u4e3a5\u6761\u3002\u6700\u540e\uff0c\u4f7f\u7528get()\u65b9\u6cd5\u6267\u884c\u67e5\u8be2\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u4ee5\u5206\u7c7b\u4e3a\u952e\uff0c\u4ee5\u6700\u5927\u9500\u91cf\u4e3a\u503c\u7684\u7ed3\u679c\u96c6\u5408\u3002<\/p>\n
        \n
      1. \u5904\u7406\u67e5\u8be2\u7ed3\u679c<\/li>\n<\/ol>\n
        \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u5904\u7406\uff0c\u4ee5\u83b7\u53d6\u6bcf\u7ec4\u7684\u524d\u4e94\u4e2a\u5546\u54c1\u3002\u6211\u4eec\u53ef\u4ee5\u5728\u4e00\u4e2a\u5faa\u73af\u4e2d\u5bf9\u7ed3\u679c\u96c6\u5408\u8fdb\u884c\u5904\u7406\uff0c\u67e5\u8be2\u6bcf\u7ec4\u4e2d\u7684\u524d\u4e94\u4e2a\u5546\u54c1\uff0c\u5e76\u5c06\u5b83\u4eec\u6dfb\u52a0\u5230\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\u4e2d\u3002<\/p>\n
        $result = [];\nforeach ($products as $product) {\n    $query = DB::table('products')\n                -&gt;select('*')\n                -&gt;where('category', $product-&gt;category)\n                -&gt;orderByDesc('sales')\n                -&gt;limit(5)\n                -&gt;get();\n    $result[$product-&gt;category] = $query;\n}<\/pre>\n
          \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
        \u5728\u5faa\u73af\u5185\u90e8\uff0c\u6211\u4eec\u5148\u67e5\u8be2\u6bcf\u4e2a\u5206\u7c7b\u4e0b\u7684\u6240\u6709\u5546\u54c1\uff0c\u7136\u540e\u6309\u9500\u91cf\u964d\u5e8f\u6392\u5e8f\uff0c\u9650\u5236\u67e5\u8be2\u8bb0\u5f55\u6570\u4e3a5\uff0c\u6700\u540e\u5c06\u67e5\u8be2\u7ed3\u679c\u6dfb\u52a0\u5230\u65b0\u6570\u7ec4\u4e2d\u3002\u5faa\u73af\u7ed3\u675f\u540e\uff0c\u6211\u4eec\u5c31\u5f97\u5230\u4e86\u4e00\u4e2a\u4ee5\u5206\u7c7b\u4e3a\u952e\uff0c\u4ee5\u67e5\u8be2\u7ed3\u679c\u4e3a\u503c\u7684\u65b0\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5305\u542b\u4e86\u6bcf\u4e2a\u5206\u7c7b\u4e2d\u9500\u91cf\u524d\u4e94\u7684\u5546\u54c1\u3002<\/p>\n
          \n
        1. \u8f93\u51fa\u7ed3\u679c<\/li>\n<\/ol>\n
          \u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u904d\u5386\u65b0\u6570\u7ec4\uff0c\u5c06\u67e5\u8be2\u7ed3\u679c\u8f93\u51fa\u5230\u9875\u9762\u4e2d\u3002<\/p>\n
          foreach ($result as $category =&gt; $products) {\n    echo '<h3>'.$category.'<\/h3>';\n    echo '<\/pre>\n
            \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
            \n  ‘; foreach ($products as $product) { echo ‘ <\/p>\n
          • ‘ . $product->name . ‘<\/li>\n
            ‘; } echo ‘\n<\/ul>\n
            ‘; } <\/p>\n
            \u5728\u8f93\u51fa\u7ed3\u679c\u65f6\uff0c\u6211\u4eec\u5148\u8f93\u51fa\u5206\u7c7b\u7684\u540d\u79f0\uff0c\u7136\u540e\u5728\u4e00\u4e2aul\u5217\u8868\u4e2d\u8f93\u51fa\u6bcf\u4e2a\u5546\u54c1\u7684\u540d\u79f0\u3002<\/p>\n
              \n
            1. \u603b\u7ed3<\/li>\n<\/ol>\n
              \u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u5982\u4f55\u5728Laravel\u4e2d\u4f7f\u7528\u5206\u7ec4\u67e5\u8be2\u6765\u67e5\u8be2\u6bcf\u7ec4\u7684\u524d\u51e0\u6761\u8bb0\u5f55\u3002\u901a\u8fc7\u4f7f\u7528select()\u3001groupBy()\u3001orderByDesc()\u3001limit()\u7b49\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u7f16\u5199\u67e5\u8be2\u8bed\u53e5\uff0c\u5b9e\u73b0\u5404\u79cd\u590d\u6742\u7684\u67e5\u8be2\u9700\u6c42\u3002\u540c\u65f6\uff0c\u6211\u4eec\u4e5f\u5b66\u4e60\u4e86\u5982\u4f55\u4f7f\u7528Laravel\u7684\u67e5\u8be2\u6784\u5efa\u5668\u6765\u7f16\u5199\u6570\u636e\u5e93\u67e5\u8be2\u8bed\u53e5\uff0c\u5e76\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u5904\u7406\u548c\u8f93\u51fa\u3002<\/p>\n
              \u4ee5\u4e0a\u5c31\u662fLaravel\u5206\u7ec4\u67e5\u8be2\u524d\u51e0\u6761\u8bb0\u5f55\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
              \u5728laravel\u4e2d\uff0c\u6211\u4eec\u65f6\u5e38\u9700\u8981\u4ece\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u524d\u51e0\u6761\u8bb0\u5f55\uff0c\u4f8b\u5982\u67e5\u8be2\u4e00\u4e2a\u5546\u54c1\u5206\u7c7b\u4e0b\u9500\u91cf\u524d\u4e94\u7684\u5546\u54c1\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u901a\u5e38\u4f1a\u4f7f\u7528\u5206\u7ec4\u67e5\u8be2\u6765\u5b9e\u73b0\u3002 \u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728Laravel\u4e2d\u8fdb\u884c\u5206\u7ec4\u67e5\u8be2\uff0c\u5e76\u67e5\u8be2\u6bcf\u7ec4\u7684\u524d\u51e0\u6761\u8bb0\u5f55\u3002 \u51c6\u5907\u5de5\u4f5c \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u6709\u4e00\u4e2a\u6570\u636e\u8868\u6765\u5b58\u50a8\u5546\u54c1\u4fe1\u606f\u3002\u5047\u8bbe\u6211\u4eec\u5df2\u7ecf\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a\u201cproducts\u201d\u7684\u6570\u636e\u8868\uff0c\u5e76\u63d2\u5165\u4e86\u4e00\u4e9b\u6570\u636e\u3002 \u7f16\u5199\u67e5\u8be2\u8bed\u53e5 \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Laravel\u7684\u67e5\u8be2\u6784\u5efa\u5668\u6765\u7f16\u5199\u67e5\u8be2\u8bed\u53e5\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u5546\u54c1\u6309\u5206\u7c7b\u8fdb\u884c\u5206\u7ec4\uff0c\u7136\u540e\u518d\u67e5\u8be2\u6bcf\u7ec4\u7684\u524d\u4e94\u4e2a\u5546\u54c1\u3002\u67e5\u8be2\u8bed\u53e5\u5982\u4e0b\uff1a $products = DB::table(‘products’) -&gt;select(‘category’, DB::raw(‘MAX(sales) as max_sales’)) -&gt;groupBy(‘category’) -&gt;orderByDesc(‘max_sales’) -&gt;limit(5) -&gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u91cc\u6211\u4eec\u4f7f\u7528\u4e86select()\u65b9\u6cd5\u6765\u6307\u5b9a\u8981\u67e5\u8be2\u7684\u5b57\u6bb5\uff0c\u540c\u65f6\u4f7f\u7528\u4e86DB::raw()\u65b9\u6cd5\u6765\u8ba1\u7b97\u6bcf\u7ec4\u7684\u6700\u5927\u9500\u91cf\u3002groupBy()\u65b9\u6cd5\u6307\u5b9a\u6309\u5206\u7c7b\u5b57\u6bb5\u8fdb\u884c\u5206\u7ec4\uff0corderByDesc()\u65b9\u6cd5\u6309\u6700\u5927\u9500\u91cf\u964d\u5e8f\u6392\u5e8f\uff0climit()\u65b9\u6cd5\u9650\u5236\u67e5\u8be2\u7684\u8bb0\u5f55\u6570\u4e3a5\u6761\u3002\u6700\u540e\uff0c\u4f7f\u7528get()\u65b9\u6cd5\u6267\u884c\u67e5\u8be2\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u4ee5\u5206\u7c7b\u4e3a\u952e\uff0c\u4ee5\u6700\u5927\u9500\u91cf\u4e3a\u503c\u7684\u7ed3\u679c\u96c6\u5408\u3002 \u5904\u7406\u67e5\u8be2\u7ed3\u679c \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u5904\u7406\uff0c\u4ee5\u83b7\u53d6\u6bcf\u7ec4\u7684\u524d\u4e94\u4e2a\u5546\u54c1\u3002\u6211\u4eec\u53ef\u4ee5\u5728\u4e00\u4e2a\u5faa\u73af\u4e2d\u5bf9\u7ed3\u679c\u96c6\u5408\u8fdb\u884c\u5904\u7406\uff0c\u67e5\u8be2\u6bcf\u7ec4\u4e2d\u7684\u524d\u4e94\u4e2a\u5546\u54c1\uff0c\u5e76\u5c06\u5b83\u4eec\u6dfb\u52a0\u5230\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\u4e2d\u3002 $result = []; foreach ($products as $product) { $query = DB::table(‘products’) -&gt;select(‘*’) -&gt;where(‘category’, $product-&gt;category) -&gt;orderByDesc(‘sales’) -&gt;limit(5) -&gt;get(); $result[$product-&gt;category] = $query; } \u767b\u5f55\u540e\u590d\u5236 \u5728\u5faa\u73af\u5185\u90e8\uff0c\u6211\u4eec\u5148\u67e5\u8be2\u6bcf\u4e2a\u5206\u7c7b\u4e0b\u7684\u6240\u6709\u5546\u54c1\uff0c\u7136\u540e\u6309\u9500\u91cf\u964d\u5e8f\u6392\u5e8f\uff0c\u9650\u5236\u67e5\u8be2\u8bb0\u5f55\u6570\u4e3a5\uff0c\u6700\u540e\u5c06\u67e5\u8be2\u7ed3\u679c\u6dfb\u52a0\u5230\u65b0\u6570\u7ec4\u4e2d\u3002\u5faa\u73af\u7ed3\u675f\u540e\uff0c\u6211\u4eec\u5c31\u5f97\u5230\u4e86\u4e00\u4e2a\u4ee5\u5206\u7c7b\u4e3a\u952e\uff0c\u4ee5\u67e5\u8be2\u7ed3\u679c\u4e3a\u503c\u7684\u65b0\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5305\u542b\u4e86\u6bcf\u4e2a\u5206\u7c7b\u4e2d\u9500\u91cf\u524d\u4e94\u7684\u5546\u54c1\u3002 \u8f93\u51fa\u7ed3\u679c \u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u904d\u5386\u65b0\u6570\u7ec4\uff0c\u5c06\u67e5\u8be2\u7ed3\u679c\u8f93\u51fa\u5230\u9875\u9762\u4e2d\u3002 foreach ($result as $category =&gt; $products) { echo ‘<h3>’.$category.'<\/h3>’; […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-22975","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=22975"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22975\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=22975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=22975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=22975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}