Laravel Eloquent Joins

Question

I have below query in core php:

SELECT DISTINCT device_tocken FROM push_details JOIN users ON users.id=push_details.user_id

I have to integrate it in laravel 4

Application already have User extends Eloquent class

I created Push_details class as below

class Push_details extends Eloquent {

public $table = 'push_details';

public function User() {
    return $this->hasMany('\User','id');
}

}

    Table : users
        Primary key : id

    Table: push_details
        Primary key: id
        Foreign key: user_id belongsTo('users.id');

But i m not able to get expected result.

One more thing i didn't write anything in User's model yet.

Answer 1

Only way to join table is.. to join it, as Eloquent relations don't work using joins but separate queries with WHERE IN clauses. So this will do:

DB::table('push_details')
   ->select('device_tocken')
   ->distinct()
   ->join('users','users.id','=','push_details.user_id')
   ->get();

Above will return array of stdObject's so or if you need Eloquent Collection with Eloquent models as a result replace DB::table('push_details')->select... with PushDetails::select...

Now, correct your relations, as they are wrong:

// PushDetails model (as previously stated, I suggest renaming it to StudlyCase)
public function user() {
    return $this->belongsTo('\User','user_id'); // user_id is may be omitted here
}

// User model
public function pushDetails() {
    return $this->hasMany('\PushDetails','user_id'); // user_id is may be omitted here as well
}

Answer 2

1. In your User model, you need to link back to the PushDetails model, like so

   class User extends Eloquent {
       public function push_details() {
           return $this->belongsTo('PushDetails');
       }
   }
   

2. Use CamelCase for Class names, because laravel has several functions, in which CamelCase are changed to snake_case

3. Change

   public function User() {
       return $this->hasMany('\User','id');
   }
   

to

    public function users() {
        return $this->hasMany('User');
    }

See the docs 'Eloquent ORM' for more...