PHP部分逻辑
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']){
$postdata = Article::leftJoin('category','article.update_time'])->where('article.title_editing',$_GET['keywords'])->orderBy('release_time','desc')->paginate($shownum);
}else{
$postdata = Article::leftJoin('category','article.update_time'])->orderBy('release_time','desc')->paginate($shownum);
}
}else{
//echo '2222';
$postdata = Article::leftJoin('category',function($join) {
$join->on('article.class_id','category.id');
})->select(['article.id','desc')->paginate($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]);
}
