Laravel notes

• Create a new Laravel project
• Hello world exercise
• Route parameter exercise
• Controller exercise
• View exercise
• Render list exercise
• Layout exercise
• Register form
• Ticketing system app
  • Installation
  • Ticket model and migration
  • Render tickets
  • Create ticket form
  • Create form errors
  • Create form errors
  • Show ticket view
  • Delete ticket
  • Update ticket policy
  • Reply model
  • Reply model relationships
  • Render replies
  • Store reply
  • Delete reply
  • Reply policy

New project

composer create-project --prefer-dist laravel/laravel name

Hello world exercise

Create a get route for the hello URL and return Hello, world.

Hints

• Open routes/web.php
• Use Route facade

Route::get(url, closure);

Solution

Route::get('hello', function() {
  return 'Hello, world';
});

Route parameter exercise

• Create hello get route and accept a name parameters as string
• Return name parameter

Hints

• Open routes/web.php
• Use Route facade
• Define {name} as parameter

Solution

Route::get('hello/{name}', function(string $name) {
  return $name;
});

Controller exercise

• Generate a controller
• Register a route that accepts two numbers as parameters
• Return the sum of the parameters

Hints

• php artisan make:controller ControllerName
• Use Route facade
• Define {a} and {b} as parameters

Solution

terminal

php artisan make:controller ExampleController

routes/web.php

Route::get('{a}/{b}', 'ExampleController@sum');

app/http/Controllers/ExampleController

public function sum(int $a, int $b) {
  return $a + $b;
}

View exercise

Requirements

• Create a get route and accept name as parameter
• Return a view with and pass the name parameter
• Render Hello, and the name

Hints

• Use Route facade
• Define {name} as parameter
• Create a blade file inside resources/views folder
• Return the blade file from the previous step using view('view_name', ['name' => $name]) helper

Solution

routes/web.php

Route::get('{name}', function(string $name) {
  return view('hello', ['name' => $name])
});

resources/views/hello.blade.php

<h1>Hello, {{$name}}</h1>

Render list exercise

Requirements

Star Wars movies data

$starWarsMovies = [
    'Episode IV – A New Hope (1977)',
    'Episode V – The Empire Strikes Back (1980)',
    'Episode VI – Return of the Jedi (1983)',
    'Episode I – The Phantom Menace (1999)',
    'Episode II – Attack of the Clones (2002)',
    'Episode III – Revenge of the Sith (2005)',
    'Episode VII – The Force Awakens (2015)',
    'Episode VIII – The Last Jedi (2017)',
    'Episode IX – The Rise of Skywalker (2019)',
];

• Create a blade template and render Star Wars movies
• Create a route, return the template and pass Star wars movies
• Use unordered list element ul
• Render iteration number before each movie
• Add first-movie class on the first movie
• Render last movie inside a strong element

Hints

• Use Route facade
• Define {name} as parameter
• Create a blade file inside resources/views folder
• Return the blade file from the previous step using view('view_name', ['name' => $name]) helper
• @foreach($array as $item) @endforeach
• Use $loop variable inside foreach
  • index
  • iteration
  • remaining
  • first
  • last

Solution

routes/web.php

Route::get('movies', function() {
  $starWarsMovies = [
    'Episode IV – A New Hope (1977)',
    'Episode V – The Empire Strikes Back (1980)',
    'Episode VI – Return of the Jedi (1983)',
    'Episode I – The Phantom Menace (1999)',
    'Episode II – Attack of the Clones (2002)',
    'Episode III – Revenge of the Sith (2005)',
    'Episode VII – The Force Awakens (2015)',
    'Episode VIII – The Last Jedi (2017)',
    'Episode IX – The Rise of Skywalker (2019)',
];
  return view('movies', ['movies' => $starWarsMovies])
});

resources/views/movies.blade.php

<ul>
@foreach($movies as $movie)
<li class="{{$loop->first ? 'first-movie' : ''}}">
  @if(!$loop->last)
  {{$loop->iteration}} - {{$movie}}
  @else
  <strong>{{$loop->iteration}} - {{$movie}}</strong>
  @endif
</li>
@endforeach
<ul>

Layout exercise

Requirements

• Create a view named layout and declare 2 sections
  • title (Document title)
  • content
• Include Bootstrap using the CDN link
• Create another view named home
  • Extend layout view and override title and content sections
  • Add a button inside content section with the classes btn btn-primary
• Create a route and return the home view

Hints

• @yield('section_name')
• @extends('view_name')
• @section('section_name') @endsection
• Bootstrap: <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">

Solution

resources/views/layout.blade.php

<!doctype html>
<html>

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>@yield('title')</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
</head>

<body>
    <div>
        @yield('content')
    </div>
</body>

</html>

resources/views/home.blade.php

@extends('layout')

@section('title', 'Home page')

@section('content')
<button class="btn btn-primary"></button>
@endsection

routes/web.php

Route::get('home', function() {
  return view('home');
});

Register form

Requirements

• Create a controller named RegisterController
• Create a view named register
• Define a /register get and post routes
• Form requirements
  • Name field
  • Email field
  • Password field
  • Password confirmation
  • Action to RegisterController@register
  • Form errors
  • Old values
• Implement registerForm method on RegisterController and return register view
• Implement register method on RegisterController
  • Validation
    • Name rules -> Required, String, Max 50
    • Email rules -> Required, String, Email, Max 255
    • Password rules -> Required, Min 8, Confirmed
• Create a view named welcome and render Hello, {{$name}}
• Create a method on controller named welcome
• Define a /welcome/{name} route
• On succusfull registration redirect to welcome and pass the name as parameter

Hints

• php artisan make:controller ControllerName
• Use Route facade to define routes
• action('ControllerName@method')
• @csrf
• Name attribute on form fields
• @method()
• request->validate(['field_name' => 'rule1|rule2'])
• redirect(url)
• action('ControllerName@method', ['param' => $param])

Solution

routes/web.php

Route::get('/register', 'RegisterController@registerForm');
Route::post('/register', 'RegisterController@register');
Route::get('/welcome/{name}', 'RegisterController@welcome');

app/Http/Controllers/RegisterController

class RegisterController extends Controller
{
    public function registerForm()
    {
        return view('register');
    }

    public function register(Request $request)
    {
        $validatedData = $request->validate(
            [
                'name' => ['required', 'string', 'max:255'],
                'email' => ['required', 'string', 'email', 'max:255'],
                'password' => ['required', 'string', 'min:8', 'confirmed'],
            ]
        );

        return redirect(action('RegisterController@welcome', ['name' => $validatedData['name']]));
    }

    public function welcome(string $name)
    {
        return view('welcome', ['name' => $name]);
    }
}

resources/views/register.blade.php

<ul>
  @foreach($errors->all as $error)
  <li>{{$error}}</li>
  @endforeach
</ul>
<form action="{{action('RegisterController@register')}}" method="POST">
  @csrf
  <input type="text" name="name" placeholder="Name" value="{{old('name', '')}}">
  <input type="email" name="email" placeholder="Email" value="{{old('email', '')}}">
  <input type="password" name="password" placeholder="Password" value="{{old('password', '')}}">
  <input type="password" name="password_confirmation" placeholder="Password confirmation">
  <input type="submit" value="Register">
</form>

resources/views/register.blade.php

<h1>Hello, {{$name}}</h1>

Ticketing system

Clone project

• git clone --branch installation https://github.com/SocialNerdsGR/laravel-workshop-ticketing-system.git ticketing-app
• cd ticketing-app
• chmod +x checkout.sh
• cp .env.example .env
• composer install
• php artisan key:generate
• touch database/database.sqlite
• Change DB_CONNECTION variable on .env file from DB_CONNECTION=mysql to DB_CONNECTION=sqlite

Ticket model and migration

Requirements

• Generate Model and Migration files using artisan
• Ticket fields
  • type: unsignedBigInteger, name: user_id (foreign key)
  • type: string, name: title
  • type: text, name: text
• Create 2 tickets using Tinker
  • Use Ticket::create() method
• User relationship on Ticket model

Hints

• php artisan make:model Name --migration (-m)
• foreign('field_name')->references('table_id')->on('table')
• php artisan migrate
• php artisan tinker
• protected $fillable = ['field_name', 'field_name']
• return $this->belongsTo(Model::class)

Solution

create_tickets_table.php

public function up()
{
  Schema::create('tickets', function (Blueprint $table) {
    $table->bigIncrements('id');
    $table->unsignedBigInteger('user_id');
    $table->foreign('user_id')->references('id')->on('users');
    $table->string('title');
    $table->text('content');
    $table->timestamps();
  });
}

Ticket.php

class Ticket extends Model
{
  protected $fillable = ['title', 'content', 'user_id'];

  public function user()
  {
    return $this->belongsTo(User::class);
  }
}

Render tickets

chmod +x checkout.sh && ./checkout.sh ticket-resource

Requirements

• Create a new folder named tickets inside resources
• Create index.blade.php file
• Implement index method on TicketsController
  • Load tickets using paginate() method
  • Return index view passing tickets as parameter
• Render tickets
  • Extend app layout
  • title -> link to /tickets/{ticketId} using action helper
  • render pagination links using links() method

Hints

• Ticket::paginate(PER_PAGE)
• view('view_name', ['key' => $value])
• @extends('view_name')
• @section('section_name') @endsection
• @foreach
• action('ControllerName@method', ['key' => $value])

Solution

TicketsController.php

public function index()
{
    $tickets = Ticket::paginate(10);
    return view('tickets.index', ['tickets' => $tickets]);
}

resources/tickets/index.blade.php

@extends('layouts.app')

@section('content')
<h2>Tickets</h2>
<ul>
  @foreach($tickets as $ticket)
  <li><a href={{action('TicketsController@show', ['ticket' => $ticket->id])}}>{{$ticket->title}}</a></li>
  @endforeach
</ul>
{{$tickets->links()}}
@endsection

Create Ticket form

chmod +x checkout.sh && ./checkout.sh render-tickets

Requirements

• Create a link on index.blade.php targeting create method on TicketsController using action helper
• Create create.blade.php inside tickets folder
• Extend layout
• Implement new ticket form
  • form
  • method
  • action
  • Title input
  • Contnent textarea
  • Submit button

Hints

• @extend('view_name')
• action('ControllerName@method')
• @csrf
• Name attribute on form fields

Solution

resources/tickets/index.blade.php

<a href={{action('TicketsController@create')}}>Create new ticket</a>

TicketsController.php

public function create()
{
    return view('tickets.create');
}

resources/tickets/create.blade.php

@extends('layouts.app')

@section('content')
<form method="POST" action={{action('TicketsController@store')}}>
  @csrf
  <input type="text" name="title" placeholder="Title">
  <textarea placeholder="Ticket" name="content" cols="30" rows="10"></textarea>
  <input type="submit" value="Create">
</form>
@endsection

Create form errors

chmod +x checkout.sh && ./checkout.sh ticket-controller-store

Requirements

• Render form errors
• Fill old form values
• Redirect to created ticket

Hints

• Use $errors object to get errors
• Use old('field_name', defaultValue) helper to get form values
• Use action helper to generate a link

Solution

resources/tickets/create.blade.php

@section('content')
<ul>
  @foreach($errors->all() as $error)
  <li>{{$error}}</li>
  @endforeach
</ul>
<form method="POST" action={{action('TicketsController@store')}}>
  @csrf
  <input value="{{old('title', '')}}" type="text" name="title" placeholder="Title">
  <textarea placeholder="Ticket" name="content" cols="30" rows="10">{{old('content', '')}}</textarea>
  <input type="submit" value="Create">
</form>
@endsection

TicketsController.php

public function store(Request $request)
{
  $validatedData = $request->validate([
    'title' => 'required|min:5|unique:tickets',
    'content' => 'required|max:255'
  ]);

  $ticket = Ticket::create([
    'user_id' => Auth::user()->id,
    'title' => $validatedData['title'],
    'content' => $validatedData['content']
  ]);

  return redirect(action('TicketsController@show', ['ticket' => $ticket->id]));
}

Show ticket view

chmod +x checkout.sh && ./checkout.sh ticket-create-form-errors

Requirements

• Create show.blade.php file
• Implement show method on TicketsController
  • Return show view passing ticket as parameter
• Render ticket
  • Title
  • Content

Hints

• view('view_name', ['key' => $value])
• @extends('view_name')
• @section('section_name') @endsection

Solution

TicketsController.php

public function show(Ticket $ticket)
{
  return view('tickets.show', ['ticket' => $ticket]);
}

resources/tickets/show.blade.php

@extends('layouts.app')

@section('content')
<h3>{{$ticket->title}}</h3>
<p>
  {{$ticket->content}}
</p>
@endsection

Delete ticket

chmod +x checkout.sh && ./checkout.sh ticket-show-view

Requirements

• Create delete form after ticket title on show view
• Use delete method
• Implement destroy method on TicketsController
• Redirect back to index

Hints

• @method()
• @csrf
• $model->delete()
• action('ControllerName@method')

Solution

resources/tickets/show.blade.php

<form method="POST" action="{{action('TicketsController@destroy', ['ticket' => $ticket->id])}}">
  @csrf
  @method('DELETE')
  <input type="submit" value="Delete">
</form>

TicketsController.php

public function destroy(Ticket $ticket)
{
  $ticket->delete();
  return redirect(action('TicketsController@index'));
}

Edit ticket

chmod +x checkout.sh && ./checkout.sh delete-ticket

Requirements

• Add edit link on show view
• Create edit.blade.php file
• Implement edit method on TicketsController
  • Return edit view passing ticket as parameter
• Render edit form
  • Use PATCH method
  • Title input
  • Content
• Render errors and old values
• Validate and update ticket
• Redirect to show method

Hints

• @extend('view_name')
• action('ControllerName@method')
• @csrf
• @method()
• Name attribute on form fields
• request->validate(['field_name' => 'rule1|rule2'])
• $model->update($validatedData)

Solution

resources/tickets/show.blade.php

<a href="{{action('TicketsController@edit', ['ticket' => $ticket->id])}}">Edit ticket</a>

TicketsController.php

public function edit(Ticket $ticket)
{
  return view('tickets.edit', ['ticket' => $ticket]);
}

resources/tickets/edit.blade.php

@extends('layouts.app')

@section('content')
<ul>
  @foreach($errors->all() as $error)
  <li>{{$error}}</li>
  @endforeach
</ul>
<form method="POST" action="{{action('TicketsController@update', ['ticket' => $ticket->id])}}">
  @csrf
  @method('PATCH')
  <input name="title" value="{{old('title', $ticket->title)}}" type="text">
  <textarea name="content" cols="30" rows="10">{{old('content', $ticket->content)}}</textarea>
  <input type="submit" value="Save">
</form>
@endsection

TicketsController.php

public function update(Request $request, Ticket $ticket)
{
  $validatedData = request()->validate([
    'title' => 'required|min:5|unique:tickets,title,' . $ticket->id,
    'content' => 'required|max:255'
  ]);

  $ticket->fill($validatedData);
  $ticket->save();

  return redirect(action('TicketsController@edit', ['ticket' => $ticket->id]));
}

Update ticket policy

chmod +x checkout.sh && ./checkout.sh delete-ticket-policy

Requirements

• Implement update method on TicketPolicy
• Render edit link on show view, only if user is authorized to update the ticket

Hints

• @can('model', $model)...@endcan

Solution

TicketPolicy.php

public function update(User $user, Ticket $ticket)
{
  return $user->id == $ticket->user_id;
}

resources/tickets/show.blade.php

@can('update', $ticket)
<a href="{{action('TicketsController@edit', ['ticket' => $ticket->id])}}">Edit ticket</a>
@endcan

Reply model

chmod +x checkout.sh && ./checkout.sh update-ticket-policy

Requirements

• Generate Model and Migration files using artisan
• Reply fields
  • type: unsignedBigInteger, name: user_id (foreign key)
  • type: unsignedBigInteger, name: ticket_id (foreign key)
  • type: text, name: reply
• Create 2 replies using Tinker
  • Use Reply::create() method

Hints

• php artisan make:model Name --migration (-m)
• foreign('field_name')->references('table_id')->on('table')
• php artisan migrate
• php artisan tinker
• protected $fillable = ['field_name', 'field_name']

Solution

Reply.php

class Ticket extends Model
{
    protected $fillable = ['title', 'content', 'user_id'];
}

database/migrations/create_replies_table.php

Schema::create('replies', function (Blueprint $table) {
    $table->bigIncrements('id');
    $table->unsignedBigInteger('ticket_id');
    $table->foreign('ticket_id')->references('id')->on('tickets');
    $table->unsignedBigInteger('user_id');
    $table->foreign('user_id')->references('id')->on('users');
    $table->text('reply');
    $table->timestamps();
});

Reply model relationships

chmod +x checkout.sh && ./checkout.sh reply-model

Requirements

• Create replies relationship on Ticket model
• Create user relationship on Reply model

Hints

• hasMany(Model::class)
• belongsTo(Model::class)

Solution

Ticket.php

class Ticket extends Model
{
    protected $fillable = ['title', 'content', 'user_id'];

    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function replies()
    {
        return $this->hasMany(Reply::class);
    }
}

Reply.php

class Reply extends Model
{
    protected $fillable = ['user_id', 'ticket_id', 'reply'];

    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

Render replies

chmod +x checkout.sh && ./checkout.sh reply-model-relationships

Requirements

• Pass paginated (5 per page) replies on show view from TicketsController
• Render replies
  • Author name
  • Reply (Content)
  • Created_at formatted ('D m M Y')
  • Pagination links

Hints

• Get relationship data Model::relationship()->paginated(10)
• @foreach @endforeach
• $model->links() to render pagination links

Solution

TicketsController.php

public function show(Ticket $ticket)
{
    $replies = $ticket->replies()->paginate(5);
    return view('tickets.show', compact('ticket', 'replies'));
}

resources/tickets/show.blade.php

@extends('layouts.app')

@section('content')
<h3>{{$ticket->title}}</h3>
@can('update', $ticket)
<a href="{{action('TicketsController@edit', ['ticket' => $ticket->id])}}">Edit ticket</a>
@endcan
@can('delete', $ticket)
<form method="POST" action="{{action('TicketsController@destroy', ['ticket' => $ticket->id])}}">
  @csrf
  @method('DELETE')
  <input type="submit" value="Delete">
</form>
@endcan
<p>
  {{$ticket->content}}
</p>
<div>
  @foreach($replies as $reply)
  <div>
    <h5>Author: {{$reply->user->name}}</h5>
    <strong>{{$reply->created_at->format('D m M Y')}}</strong>
    <p>{{$reply->reply}}</p>
  </div>
  @endforeach
  {{$replies->links()}}
</div>
@endsection

Reply.php

class Reply extends Model
{
    protected $fillable = ['user_id', 'ticket_id', 'reply'];

    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

Store reply

chmod +x checkout.sh && ./checkout.sh latest-replies

Requirements

• Create replies resource controller
• Remove all methods except store and destroy
• Register a nested resource route only for store and destroy methods tickets.replies
• Create new reply form on tickets.show view
  • @csrf
  • Reply text area
  • Action to RepliesController@store
• Validate reply
  • Rules -> required, maximum characters 255
  • Save reply
  • Handle old values on error
• Redirect back after save

Hints

• php artisan make:controller ControllerName --resource --model=ModelName
• Route::resource('path.nested', 'ControllerName')
• action('ControllerName@method')
• $request->validate(['field_name' => 'rule1|rule2'])
• old('field_name', $defaultValue)
• Redirect back using back() helper

Solution

web.php

Route::middleware(['auth'])->group(function () {
    Route::resource('tickets', 'TicketsController');
    Route::resource('tickets.replies', 'RepliesController')->only(['store', 'destroy']);
});

resources/views/tickets/show.blade.php

@extends('layouts.app')

@section('content')

<h3>{{$ticket->title}}</h3>
@can('update', $ticket)
<a href="{{action('TicketsController@edit', ['ticket' => $ticket->id])}}">Edit ticket</a>
@endcan
@can('delete', $ticket)
<form method="POST" action="{{action('TicketsController@destroy', ['ticket' => $ticket->id])}}">
  @csrf
  @method('DELETE')
  <input type="submit" value="Delete">
</form>
@endcan
<p>
  {{$ticket->content}}
</p>
// Create Reply Form
<form method="POST" action="{{action('RepliesController@store', ['ticket' => $ticket->id])}}">
  @csrf
  <textarea class="" name="reply" cols="30" rows="10">{{old('reply', '')}}</textarea>
  <input type="submit" value="Reply">
</form>
// End
<div>
  @foreach($replies as $reply)
  <div>
    <h5>Author: {{$reply->user->name}}</h5>
    <strong>{{$reply->created_at->format('D m M Y')}}</strong>
    <p>{{$reply->reply}}</p>
  </div>
  @endforeach
  {{$replies->links()}}
</div>
@endsection

RepliesController

public function store(Request $request, Ticket $ticket)
{
    $validatedData = $request->validate([
        'reply' => 'required|max:255'
    ]);

    Reply::create([
        'reply' => $validatedData['reply'],
        'user_id' => Auth::user()->id,
        'ticket_id' => $ticket->id
    ]);

    return back();
}

Delete reply

chmod +x checkout.sh && ./checkout.sh store-reply

Requirements

• Create delete form on each reply
  • @csrf
  • Delete method
  • Action to RepliesController@destroy
• Implement destroy method on RepliesController@destroy
• Redirect back

Hints

• @method('DELETE')
• action('ControllerName@method', ['reply' => $id])
• $model->delete()
• back()

Solution

resources/views/tickets/show.blade.php

@extends('layouts.app')

@section('content')
<h3>{{$ticket->title}}</h3>
@can('update', $ticket)
<a href="{{action('TicketsController@edit', ['ticket' => $ticket->id])}}">Edit ticket</a>
@endcan
@can('delete', $ticket)
<form method="POST" action="{{action('TicketsController@destroy', ['ticket' => $ticket->id])}}">
  @csrf
  @method('DELETE')
  <input type="submit" value="Delete">
</form>
@endcan
<p>
  {{$ticket->content}}
</p>
<form method="POST" action="{{action('RepliesController@store', ['ticket' => $ticket->id])}}">
  @csrf
  <textarea class="" name="reply" cols="30" rows="10">{{old('reply', '')}}</textarea>
  <input type="submit" value="Reply">
</form>
<div>
  @foreach($replies as $reply)
  <div>
    // DELETE FORM
    <form method="POST" action="{{action('RepliesController@destroy', ['ticket' => $ticket->id, 'reply' => $reply->id])}}">
      @csrf
      @method('DELETE')
      <input type="submit" value="Delete">
    </form>
    // END
    <h5>Author: {{$reply->user->name}}</h5>
    <strong>{{$reply->created_at->format('D m M Y')}}</strong>
    <p>{{$reply->reply}}</p>
  </div>
  @endforeach
  {{$replies->links()}}
</div>
@endsection

RepliesController

public function destroy(Ticket $ticket, Reply $reply)
{
    $reply->delete();
    return back();
}

Reply policy

chmod +x checkout.sh && ./checkout.sh delete-reply

Requirements

• Create ReplyPolicy
• Register ReplyPolicy on RepliesController
• Implement ReplyPolicy methods
• Show delete reply button if user is authorized to delete the reply

Hints

• php artisan make:policy ModelNamePolicy --model=ModelName
• $this->authorizeResource(ModelName::class, 'model_name');
• @can('model_name', $model) @endcan

Solution

RepliesController

public function __construct()
{
    $this->authorizeResource(Reply::class, 'reply');
}

ReplyPolicy.php

class ReplyPolicy
{
    use HandlesAuthorization;

    public function viewAny(User $user)
    {
        return false;
    }

    public function view(User $user, Reply $reply)
    {
        return false;
    }

    public function create(User $user)
    {
        return true;
    }

    public function update(User $user, Reply $reply)
    {
        return false;
    }

    public function delete(User $user, Reply $reply)
    {
        return $user->id == $reply->user_id;
    }

    public function restore(User $user, Reply $reply)
    {
        return false;
    }

    public function forceDelete(User $user, Reply $reply)
    {
        return false;
    }
}

resources/views/show.blade.php

@extends('layouts.app')

@section('content')
<h3>{{$ticket->title}}</h3>
@can('update', $ticket)
<a href="{{action('TicketsController@edit', ['ticket' => $ticket->id])}}">Edit ticket</a>
@endcan
@can('delete', $ticket)
<form method="POST" action="{{action('TicketsController@destroy', ['ticket' => $ticket->id])}}">
  @csrf
  @method('DELETE')
  <input type="submit" value="Delete">
</form>
@endcan
<p>
  {{$ticket->content}}
</p>
<form method="POST" action="{{action('RepliesController@store', ['ticket' => $ticket->id])}}">
  @csrf
  <textarea class="" name="reply" cols="30" rows="10">{{old('reply', '')}}</textarea>
  <input type="submit" value="Reply">
</form>
<div>
  @foreach($replies as $reply)
  <div>
    // REPLY POLICY
    @can('delete', $reply)
    <form method="POST" action="{{action('RepliesController@destroy', ['ticket' => $ticket->id, 'reply' => $reply->id])}}">
      @csrf
      @method('DELETE')
      <input type="submit" value="Delete">
    </form>
    @endcan
    // END
    <h5>Author: {{$reply->user->name}}</h5>
    <strong>{{$reply->created_at->format('D m M Y')}}</strong>
    <p>{{$reply->reply}}</p>
  </div>
  @endforeach
  {{$replies->links()}}
</div>
@endsection