Call to undefined method Gallery::newQuery() Laravel

Question

I have 3 tables

products

pages

gallery - two foreign keys page_id, product_id

(are the foreign keys supposed to be mapped together UNIQUE, why?)

    <?php

class Gallery extends Eloquent {


    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'gallery';
    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */



    public static $rules = array(
    // 'email'=>'required|email|unique:users',
    // 'password'=>'required|alpha_num|between:6,12|confirmed',
    // 'password_confirmation'=>'required|alpha_num|between:6,12'
    );

    public function pages() {
        return $this->belongsTo('Pages', 'page_id');
    }

    public function products() {
         return $this->belongsTo('Products', 'products_id');
    }


}

Pages Model

<?php

class Pages extends Eloquent {


    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'pages';

    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */

    public static $rules = array(
    'title'=>'required',
    'body'=>'required'
    // 'email'=>'required|email|unique:users',
    // 'password'=>'required|alpha_num|between:6,12|confirmed',
    // 'password_confirmation'=>'required|alpha_num|between:6,12'
    );

    public function gallery() {
             return $this->hasOne('Gallery');
    }

}

Products Model

    <?php

class Products extends Eloquent {


    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'products';
    // public $timestamps = false;
    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */



    public static $rules = array(
        'title'=>'required',
        'body'=>'required'
    // 'email'=>'required|email|unique:users',
    // 'password'=>'required|alpha_num|between:6,12|confirmed',
    // 'password_confirmation'=>'required|alpha_num|between:6,12'
    );

  public function gallery()
    {
        return $this->hasOne('Gallery');
    }


}

I'm doing this in PagesController:

$page = Pages::find($page_id);
$page->gallery throws this error Call to undefined method Gallery::newQuery();

1. I created the Gallery table and foreign keys using migrations. Why do i have to create relationships between the models, these relationships are defined in the database? (le noob question)

2.Read a lot about what could be the cause of this and it's not namespacing. Been stuck on this for 3 days now, any help is greatly appreciated. I think is has something to do with my model relationships.

=============================== UPDATE =========================

Okay, so i did $gallery = new Gallery; in my PageController, and this seems to worky But now i get this funky error:

SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (spaggo.gallery, CONSTRAINT gallery_product_id_foreign FOREIGN KEY (product_id) REFERENCES products (id) ON DELETE CASCADE ON UPDATE CASCADE) (SQL: insert into gallery (page_id, updated_at, created_at) values (6, 2015-06-21 15:24:51, 2015-06-21 15:24:51))

Answer 1

First, What's your Laravel version? It actually might be due to namespacing in spite of your assumption.

Secondly, as a convention I recommend you name your models singular such as Product and Page.

To answer your other question: Yes, your database may contain constrains for these relations, but unfortunately Eloquent ORM can't make use of them. You're still required to define these relations at the model level.

Answer 2

Shouldn't it be extends Model for all Laravel models (unless of course it's some old syntax) and that Model must be declared via use statement: use Illuminate\Database\Eloquent\Model;.

I know first hand that if I forget to add Model parent class to my models then Call to undefined method App\SomeClass::newQuery error follows.