laravel框架关于搜索功能的实现

　　这里的搜索功能主要基于表单get提交实现的

　　 <form action=/backend/auditList method=get> <table class=search_tab> <tr> <th width=120>选择分类:</th> <td> <select name=class > <option value=>全部</option> @foreach($category as $c) <option value={{$c->id}}>{{$c->class_name}}</option> @endforeach </select> </td> <th width=70>文章标题:</th> <!--查询关键词--> <td><input type=text name=keywords placeholder=文章标题></td> <td><input type=submit name=sub value=查询></td> </tr> </table> </form>

　　php部分逻辑

　　 public function article_list(){ //echo zoule;exit; 测试表单是否走进方法中 大家随意写 $shownum = 1; if(array_key_exists(class,$_GET)array_key_exists(keywords,$_GET)){ //echo 111; if($_GET[class]){ //Article模型 leftJoin表连接 查询根据俩个表里的这些字段来执行 $postdata = Article::leftJoin(category, function($join) { $join->on(article.class_id, =, category.id); })->select([article.id,category.class_name,article.status,article.title_editing,article.update_time])->where(article.class_id,=,$_GET[class])->orderBy(release_time,desc)->paginate($shownum); }elseif($_GET[keywords]){ $postdata = Article::leftJoin(category, function($join) { $join->on(article.class_id, =, category.id); })->select([article.id,category.class_name,article.status,article.title_editing,article.update_time])->where(article.title_editing,=,$_GET[keywords])->orderBy(release_time,desc)->paginate($shownum); }else{ $postdata = Article::leftJoin(category, function($join) { $join->on(article.class_id, =, category.id); })->select([article.id,category.class_name,article.status,article.title_editing,article.update_time])->orderBy(release_time,desc)->paginate($shownum); } }else{ //echo 2222; $postdata = Article::leftJoin(category, function($join) { $join->on(article.class_id, =, category.id); })->select([article.id,category.class_name,article.status,article.title_editing,article.update_time])->orderBy(release_time,desc)->paginate($shownum); } //分类id不是父id $category = DB::table(category)->where(parent_id,!=,0)->get(); //渲染页面 传递 参数 return view(backend.article_list,[postdata=>$postdata,shownum=>$shownum,category=>$category]); }