/laravel-comments

Comments system for your Laravel application. Features: can be used to comment on any model, HTML filter customization (HTMLPurifier), API, comment rating, replies, events, auth rules ...

Primary LanguagePHPMIT LicenseMIT

README на русском

laraComments

This package can be used to comment on any model you have in your application.

Features

  • View comments
  • Create comment
  • Delete comment
  • Edit comment
  • Reply to comment
  • Authorization rules | with customization
  • View customization
  • Dispatch events
  • Likes | Dislikes | Comment rating
  • API for basic function: get, update, delete, create
  • HTML filter customization (using HTMLPurifier)

Upgrade guides →

Requirements

Installation

composer require tizis/lara-comments

1. Run migrations

We need to create the table for comments.

 php artisan migrate

2. Add Commenter trait to your User model

Add the Commenter trait to your User model so that you can retrieve the comments for a user:

use tizis\laraComments\Traits\Commenter;
     
class User extends Authenticatable {   
	use ..., Commenter;

3. Create Comment model

 
use tizis\laraComments\Entity\Comment as laraComment;

class Comment extends laraComment
{

}

4. Add Commentable trait and the ICommentable interface to models

Add the Commentable trait and the ICommentable interface to the model for which you want to enable comments for:

use tizis\laraComments\Contracts\ICommentable;
use tizis\laraComments\Traits\Commentable;     
     
class Post extends Model implements ICommentable {        
   use Commentable;

5. Custom comment policy (optional)

If you need, you can overwrite default comment policy class:

<?php
namespace App\Http\Policies;

use App\Entity\Comment;

use tizis\laraComments\Policies\CommentPolicy as CommentPolicyPackage;

class CommentPolicy extends CommentPolicyPackage
{
   // overwrite delete rule
   public function delete($user, $comment): bool
   {
       // ever true
       return true;
   }
}

Then register policy in AuthServiceProvider:

use Illuminate\Support\Facades\Gate;
use App\Http\Policies\CommentPolicy;
...
public function boot()
{
    Gate::resource('comments_custom', CommentPolicy::class, [
        'delete' => 'delete',
        'reply' => 'reply',
        'edit' => 'edit',
        'vote' => 'vote',
        'store => 'store'
    ]);
}

And add policy prefix to comments.php config

    'policy_prefix' => 'comments_custom',

Publish Config & configure (optional)

In the config file you can specify:

  • where is your User model located; the default is \App\User::class
  • where is your Comment model located; the default is \App\Comment::class
  • policy prefix, you can create custom policy class and extends tizis\laraComments\Policies\CommentPolicy;
  • allow tags for html filter
  • API prefix

Publish the config file (optional):

php artisan vendor:publish --provider="tizis\laraComments\Providers\ServiceProvider" --tag=config

Publish views (customization)

The default UI is made for Bootstrap 4, but you can change it however you want.

⚠⚠⚠⚠WARNING⚠⚠⚠⚠

All view examples include js/css files for correct working. The possibility of conflict with your scripts and styles.

php artisan vendor:publish --provider="tizis\laraComments\Providers\ServiceProvider" --tag=views

Usage

1. Backend rendering:

In the view where you want to display comments, place this code and modify it:

laravel 6

@comments(['model' => $post]) @endcomments   

Laravel 7

<x-comments :model="$post"/>

In the example above we are setting argument the model as class of the book model.

Behind the scenes, the package detects the currently logged in user if any.

If you open the page containing the view where you have placed the above code, you should see a working comments form.

2. Frontend rendering (API):

Title Method Url Params Route name
Get comments GET /api/comments/ commentable_encrypted_key, order_by (column name, default is id), order_direction (default is asc) route('comments.get')
Store comment POST /api/comments/ commentable_encrypted_key, message route('comments.store')
Delete comment DELETE /api/comments/{comment_id} -- route('comments.delete', $comment_id)
Edit comment POST /api/comments/{comment_id} message route('comments.update', $comment_id)
Reply to comment POST /api/comments/{comment_id} message route('comments.reply', $comment_id)
Vote to comment POST /api/comments/{comment_id}/vote vote(bool) route('comments.vote', $comment_id)

3. Access to the comment service

If you don't want use out of the box features: API, or the CommentController, but want to access the built-in features - you can use tizis\laraComments\UseCases\CommentService

CommentService class used inside default comment controller for request processing.

To disable API routes by default, set the route.root => null config value.

Methods:

  1. Сreate comment: CommentService::createComment
$user = Auth::user();
$modelId = decrypt($request->commentable_encrypted_key)['id']; // get model id from encrypted model key 
$model = $model = Post::findOrFail($modelId);
$message = '123'

$parent = rand(1, 100); // optional

$createdComment = CommentService::createComment(new Comment(), $user, $model, $message, [optional $parent]);
  1. Delete comment: CommentService::deleteComment
$comment = Comment::findOrFail(123);

CommentService::deleteComment($comment);
  1. Update comment: CommentService::updateComment
  $comment = Comment::findOrFail(123);
  $message = 'new text';
  
  $updatedComment = CommentService::updateComment($comment, $message);

Events

This package fires events to let you know when things happen.

  • tizis\laraComments\Events\CommentCreated
  • tizis\laraComments\Events\CommentUpdated
  • tizis\laraComments\Events\CommentDeleted

API preprocessing

⚠ WARNING! Only for API! ⚠

Supported preprocessors for attributes of get api:

  • user [Object]
  • comment [String]

1. Description

Sometimes additional processing of content is necessary before transmission over API.

2. Config:

    'api' => [
        'get' => [
            'preprocessor' => [
                'comment' =>  App\Helpers\CommentPreprocessor\Comment::class,
                'user' =>  App\Helpers\CommentPreprocessor\User::class 
                ...
            ]
        ]
    ]

3. Contract

Create preprocessor class and implement ICommentPreprocessor interface:

Examples:

Comment:


namespace App\Helpers\CommentPreprocessor;

use tizis\laraComments\Contracts\ICommentPreprocessor;

class Comment implements ICommentPreprocessor
{
   public function process($comment): array
   {
       return 'Hi, ' . $comment . '!';
   }
}

User:


namespace App\Helpers\CommentPreprocessor;

use tizis\laraComments\Contracts\ICommentPreprocessor;

class User implements ICommentPreprocessor
{
   public function process($user): array
   {
       $user->name = $user->name . '[Moderator]' 
       return $user;
   }
}

4. Example:

Without preprocessing:

$comment = 1;
echo $comment; // 1

$user = Auth::user();
echo $user->name; // user1

With preprocessing:

$comment = 1;
echo $comment; // Hi, 1 !

$user = Auth::user();
echo $user->name; // user1[Moderator]

Features of Commentable model

  • Scope withCommentsCount()

Example:

/**
 * Add comments_count attribute to model
 */
Posts::withCommentsCount()->orderBy('id', 'desc')->get()

Static Helper

use tizis\laraComments\Http\CommentsHelper;

Methods:

  • getNewestComments(default $take = 10, default $commentable_type = null)
  • getCommenterRating(int $userId, [optional Carbon $cacheTtl])
  • moveCommentTo(CommentInterface $comment, ICommentable $newCommentableAssociate)
  • moveCommentToAndRemoveParentAssociateOfRoot(CommentInterface $comment, ICommentable $newCommentableAssociate)

Example:

CommentsHelper::getNewestComments(20) // Return last 20 comments
CommentsHelper::getNewestComments(20, Book::class) // Return last 20 comments of Book model

Examples

This repository include only bootstrap4 template, but you can create you own UI. This is just a example of package features.

This is example of backendrendering, this way have bad performance when 100+ comments on post due to the need to check user permissions (reply, edit, delete etc) for each comment.

A good idea is use API and build UI with Vue js (or any other library) with verification of user permissions (only for UI) on frontend.

  1. Build with semantic ui
    2222d
  2. Build with bootstrap 4
    3333

Upgrade guides

From 2.x.x to 3.0

commentable_type and commentable_id request attributes was merged into single commentable_encrypted_key

You need to replace these deprecated attributes.

Example:

Old /bootstrap4/form.blade.php
<input type="hidden" name="commentable_type" value="\{{ get_class($model) }}"/>
<input type="hidden" name="commentable_id" value="{{ $model->id }}"/>


New /bootstrap4/form.blade.php
<input type="hidden" name="commentable_encrypted_key" value="{{ $model->getEncryptedKey() }}"/>