Laravel Search With Pagination

index.blade.php

// search form here

<form action="/posts/index" method="GET" class="form-vertical">

<label>Title</label>
<input type="text" name="search_title" class="form-control" value="{{ Request::get('search_title') }}">

<label>Description</label>
<input type="text" name="search_description" class="form-control" value="{{ Request::get('search_description') }}">                

<label>User Id</label>
<input type="text" name="search_user" class="form-control" value="{{ Request::get('search_user') }}">

<button type="submit" class="btn btn-primary">Search</button>

</form>


//listing table below

<table>
<tr>
  <td></td>
  <td></td>
<tr>
</table>

{{ $posts->appends(Request::except('page'))->links() }}

PostsController.php

<?php

public function index(Request $request) {

        $posts = new Post;
        
        //if have relationship, use this code below to initialize Post
        //$posts = Post::with('user','category');

        //kalau ada search by title, filter posts by title    

        if (!empty($request->search_title)) {
               
               $posts = $posts->whereTitle($request->search_title);

        }

        //kalau ada search by description

        if (!empty($request->search_description)) {
            
            $posts = $posts->where('story','LIKE',"%$request->search_description%");
        }

        //kalau ada search by user id

        if (!empty($request->search_user)) {
            $posts = $posts->whereUserId($request->search_user);
        }
        
        //kalau buat all in one search box
        
        if (!empty($request->search_anything))
        {
            $search_anything = $request->search_anything;
            
            $posts = $posts->where(function ($query) use ($search_anything) {
                            $query->orWhere('title', $search_anything)
                                ->orWhere('story', 'like' ,'%'.$search_anything.'%')
                                ->orWhereHas('author', function ($query) use ($search_anything) {
                                    $query->where('author_email', $search_anything);
                                });
                                
                        });
        }
        
        //kalau search by relationship condition
        
        if (!empty($request->search_category)) {

            $search_category = $request->search_category;

            $posts = $posts->whereHas('subcategory', function ($query) use ($search_category) {
                $query->where('category_id', $search_category);
            });
        }
        
        //kalau buat search by start date
        
        if (!empty($request->start_date))
        {
            $start_date = $request->start_date;
            $posts = $posts->whereDate('created_at','>=',$start_date);
        }
        
        //if user search by end date
        if (!empty($request->end_date))
        {
            $end_date = $request->end_date;
            $posts = $posts->whereDate('created_at','<=',$end_date);
        }

        $posts = $posts->orderBy('id','desc')->paginate(3);


    	return view('posts.index',compact('posts'));
    	
    }