【下载文档:  laravel框架关于搜索功能的实现.txt 】

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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

选择分类:	全部 @foreach($category as $c) {{$c->class_name}} @endforeach	文章标题:

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]);
}