how to fix Undefined variable: task (View: C:\Users\Lilan\Desktop\ddd\resources\views\files\form.blade.php) in laravel

Show us your controller and a corresponding method. You didn't pass the $task variable to the view.

@crnkovic this is My FileController

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use Cloudder;
use App\File as File;
use App\Task;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class FilesController extends Controller
{
    /**
     * Displays the index page of the app
     *
     * @return Response
     */
    public function uploadAttachments(Request $request, $id)
    {
         $this->validate($request, [
            'file_name'     => 'required|mimes:jpeg,bmp,png,pdf|between:1,7000',
        ]);

        $filename     = $request->file('file_name')->getRealPath();

        Cloudder::upload($filename, null);
        list($width, $height) = getimagesize($filename);

        $fileUrl = Cloudder::show(Cloudder::getPublicId(), ["width" => $width, "height" => $height]);
        $this->saveUploads($request, $fileUrl, $id);

        return redirect()->back()->with('info', 'Your Attachment has been uploaded Successfully');
    }

    private function saveUploads(Request $request, $fileUrl, $id)
    {
        $file = new File;
        $file->file_name  = $request->file('file_name')->getClientOriginalName();
        $file->file_url   = $fileUrl;
        $file->project_id = $id;
       // $file->task_id = $taskId;
        $file->save();
    }

     public function deleteOneProjectFile($fileUrl, $id)
    {
        DB::table('files')
            ->where('file_url', $fileUrl)
            ->where('project_id', $id)
            ->delete();
 
        return redirect()->route('projects.show')->with('info', 'File deleted successfully');
    }


    
    
}

No, I am asking about the controller that is rendering the files.form view.

I did not use Controller to include(files.form) as My another include files....

Can you try to pass the task to the child view? However, Laravel should include all variables from the parent view to the child view automatically.

@include ('files.form', ['task' => $task])

@crnkovic did it but same error again....

If a project has many task then you are passing a collection. Have you tried using a foreach?

@Carban yes please see My files/form.blade.php it is using foreach did you mean it?

@Flex I was looking at tasks/show.blade.php.

Either way I think your foreach has an error. I remember having a similar issue.

Try it this way in form.blade.php

@foreach ($task->project as $projects)
        <div>
             <div><i class="fa fa-check-square-o"></i>
                <span>
            <a href="{{ $projects->files->file_url }}" target="_blank">{{ $projects->files->file_name }}</a>
</span>
                    </div>
                </div>
                <hr/>
 @endforeach 

@Corban try it but same error....

see My @include('comments.form') in same blede file is working properly, but only @include('files.form') is occurred this error

see tasks/show.blade.php

<h2>{{$task->project->project_name}}</h2>
<hr>

{{$task->task_name}}
<hr>

{!!$task->body!!}

<hr>


@include('comments.form') //this is working fine



@include ('files.form') // problem with this

comments/form.blade.php

@foreach ($task->project->comments as $comment)

   
    <div>
                    <div><i class="fa fa-check-square-o"></i>
                    <span>{{ $comment->comments }} by
                       <span style="font-style: italic;color: #09f;">
                       {{ ($comment->user()->first()->username === auth()->user()->username) ? 'You' : $comment->user()->first()->username }} 
                       </span>
                    </span></div>
                    <a href="/projects/{{ $task->project->id }}/comments/{{ $comment->id }}/edit">Edit</a>
                    <button class="btn btn-danger delete pull-right"
                      data-action="/projects/{{ $task->project->id }}/comments/{{ $comment->id }}"
                      data-token="{{csrf_token()}}">
                    <i class="fa fa-trash-o"></i>Delete
                    </button>
                </div>
                <hr/>

@endforeach

   
    <form class="form-vertical" role="form" method="post" action="{{ route('projects.comments.create', $task->project->id) }}">
        <div class="form-group{{ $errors->has('comments') ? ' has-error' : '' }}">
            <textarea name="comments" class="form-control" style="width:80%;" id="comment" rows="5" cols="5"></textarea>
            @if ($errors->has('comments'))
                <span class="help-block">{{ $errors->first('comments') }}</span>
            @endif
        </div>

        <div class="form-group">
            <button type="submit" class="btn btn-info">Add Comment</button>
        </div>
        <input type="hidden" name="_token" value="{{ csrf_token() }}">
    </form>
</div>

and relationship with comments and project

Project Model

public function comments()
{
   return $this->hasMany('App\Comment');
}

Comment Model

 public function project()
    {
        return $this->belongsTo('App\Project');
    }

do you have any idea to solve this problem I am using Laravel 5.2