Simple extension for making searching and filtering by related field simple.

Use this trait to easily add ability to display/filter by related entity attribute. It also allows to use table aliases. Extension is pretty simple but makes the code cleaner, especially when using aliases (there are some auto-formatting bugs in some IDEs).

The preferred way to install this extension is through composer.

Either run

php composer.phar require --prefer-dist codiverum/yii2-relation-search-filter "*"

or add

"codiverum/yii2-relation-search-filter": "*"

to the require section of your composer.json file.

To use the trait you need to do the following (first example without using aliases):

1. In top of your class (search-model) body put:

use \codiverum\relationSF\RelationSFTrait; 

2. Make new public attribute in your class:

public $relation_name;

3. Add your attribute to safe attributes
4. In your search function add following:

• after creating $query add:

$this->joinWithRelation($query, 'relation_name');

• after creating $dataProvider add:

$this->addRelationSort($dataProvider, 'relation_name', 'related_table_field_name', 'table_name');

• after creating query filters add:

$this->addRelationFilter($query, 'relation_name', 'related_table_field_name', 'table_name');

5. Add to GridView columns array:

[
  'attribute' => 'relation_name',
  'value' => 'relation_name.related_table_field_name',
],

That's it.

1. In top of your class (search-model) body put:

use \codiverum\relationSF\RelationSFTrait; 

2. Make new public attribute in your class:

public $relation_name;

3. Add your attribute to safe attributes
4. In your search function add following:

• after creating $query add:

$this->joinWithRelation($query, 'relation_name', 'table_name', 'alias');

• after creating $dataProvider add:

$this->addRelationSort($dataProvider, 'relation_name', 'related_table_field_name', 'alias');

• after creating query filters add:

$this->addRelationFilter($query, 'relation_name', 'related_table_field_name', 'alias');

5. Add to GridView columns array:

[
  'attribute' => 'relation_name',
  'value' => 'relation_name.related_table_field_name',
],

That's it.