add likes to post (laravel) - php

Question

I have a blog built with laravel.
and I want to add likes to my posts.
so I created a Like model with a likes table.
this is what i have done in my Like model
public function post(){
return $this->belongsTo(Post::class);
}
public function user(){
return $this->belongsTo(User::class);
}
in my Post and User models
public function likes(){
return $this->hasMany(Like::class);
}
and my migration file for likes table
Schema::create('likes', function (Blueprint $table) {
$table->bigIncrements('id');
$table->foreign('post_id')->references('id')->on('posts');
$table->foreign('user_id')->references('id')->on('users');
$table->boolean('value');
$table->timestamps();
});
I want to set the values in my controller on this way!
public function liker($postID, $userID, $value){
$like = new Like([
'post_id' => $postID,
'user_id' => $userID,
'value' => $value
]);
$like->save();
return redirect()->back();
}
but the view return 419 error page. (Page Expired)
and also no changes (no row) adds to my database(likes table)!
can you help me?

Answer 1

you dont need value on a like, if it exists, it's a "like" and you should use is as a pivot table (you already have 2 foreign IDs in it)
Schema::create('likes', function (Blueprint $table) {
$table->unsignedInteger('post_id');
$table->unsignedInteger('user_id');
$table->foreign('post_id')->references('id')->on('posts');
$table->foreign('user_id')->references('id')->on('users');
$table->tinyInteger('is_dislike')->default(0);
$table->timestamps();
});
then declare the relation between Post and User
Post
public function votedUsers(){ //or simply likes
return $this->belongsToMany(User::class, 'likes')->withPivot('is_dislike')->withTimestamps();
}
User
public function votedPosts(){
return $this->belongsToMany(Post::class, 'likes')->withPivot('is_dislike')->withTimestamps();
}
Next to create a like just do it like this
public function liker($postId, $userId, $value){
$user = User::findOrFail($userId); //or use auth()->user(); if it's the authenticated user
$user->votedPosts()->attach($postId);
return redirect()->back();
}
to Remove a like use detach($postId) instead.
For dislike
$user->votedPosts()->attach($postId, ['is_dislike' => 1]);