CakePHP 3 - Query builder properly not working for HasMany associations

问题

Table : Services

+-----+--------------+
| id  |  title       |
+-----+--------------+
| 1   | Service 1    |
+-----+--------------+
| 2   | Service 2    |
+-----+--------------+

Table : Workshops { HasMany WorkshopServices }

+-----+---------------+
| id  |  title        |
+-----+---------------+
| 1   | Workshop 1    |
+-----+---------------+
| 2   | Workshop 2    |
+-----+---------------+

Table : WorkshopServices

+-----+--------------+-------------+
| id  |  workshop_id |  service_id |
+-----+--------------+-------------+
| 1   |  1           |  1          |
+-----+--------------+-------------+
| 2   |  1           |  2          |
+-----+--------------+-------------+

I want to find Workshops by service_id

My Query

$this->Workshops->find()
    ->contain([
        'WorkshopServices'
    ])
    ->where([
        'WorkshopServices.service_id IN'=>[1,2,3]
    ]);

Query Result

Unknown column `WorkshopServices.service_id` in 'where clause'

Actually Workshops table is not generating any JOIN with WorkshopServices table.

How can I write the query to get proper result from Query Builder?

回答1:

Use matching:

$array = [1,2,3];

$this->Workshops->find()
    ->matching('WorkshopServices', function ($q) use($array) {
       return $q->where(['WorkshopServices.service_id IN' => $array])
    });

回答2:

I updated @GabrielFerreira's query and Grouping the rows by WorkshopServices.workshop_id, This solution meet my Problem

$array = [1,2,3];

$this->Workshops->find()
    ->select([
          'title'=>'Workshops.title',
          'id'=>'Workshops.id',
    ])
    ->matching('WorkshopServices', function ($q) use($array) {
       return $q->where(['WorkshopServices.service_id IN' => $array]);
    })
    ->group(['WorkshopServices.workshop_id']);

来源：https://stackoverflow.com/questions/46909779/cakephp-3-query-builder-properly-not-working-for-hasmany-associations

标签

cakephp

cakephp-3.0