Filter & Sort by calculated/related fields in GridView Yii 2.0

Tutorials

2.0

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This wiki explains how to add calculated fields into your Yii Framework 2.0 gridview with filtering and sorting. >Note: If you are looking at filtering and sorting by SUMMARY data from related tables, then refer [this wiki](http://www.yiiframework.com/wiki/679/filter-sort-by-summary-data-in-gridview-yii-2-0/).
 
 
Example Structure -----------------
 
Let's say you have the following tables: ~~~
 
[sql]
 
/* Countries */
 
**Countries**
 
 
```sql
CREATE TABLE `tbl_country` (
`id` INT(11) NOT NULL AUTO_INCREMENT COMMENT 'Unique country identifier',PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='Country master table';

 
/* Persons */```
 
 
**Persons**
 
 
```sql
CREATE TABLE `tbl_person` (
`id` INT(11) NOT NULL AUTO_INCREMENT COMMENT 'Unique person identifier',PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='Person master table';

 
/* ```
 
 
**Foreign Key */**
 
 
```sql
ALTER TABLE `tbl_person`
ADD CONSTRAINT `tbl_person_FK1`REFERENCES `tbl_country` (`id`)
, ADD INDEX `tbl_person_FK1` (`country_id` ASC);
~~~``` Prerequisites -------------
 
Generate your models and CRUD via Gii. You should now have the following model classes generated:

1. **Person**: The base model for _tbl_person_Gridview Scenarios
------------------

 
Let's consider 2 scenarios you want to display in the GridView within the _index_ view generated for _Person_.

### Scenario 1: Calculated field from same tableScenario 1 Steps
----------------

 
**STEP 1:** Add a getter function to your base _Person_ model: ### Setup base model
```php

/* Getter for person full name */
public function getFullName() {**STEP 2:** Add an attribute _fullName_ to your model _PersonSearch_ and configure your rules.
### Setup search model

```php

/* your calculated attribute */
public $fullName;**STEP 3:** Configure your gridview columns in your view _index_ file
### Setup view file

```php

echo GridView::widget([
'dataProvider' => $dataProvider,**STEP 1:** Ensure your _Person_ model has a relation defined to the _Country_ model. You can also implement a getter for CountryName.
### Setup base model

```php

/* ActiveRelation */
public function getCountry()**STEP 2:** Add an attribute _countryName_ to your model _PersonSearch_ and configure your rules.
### Setup search model

```php

/* your calculated attribute */
public $countryName;**STEP 3:** Configure your gridview columns in your view _index_ file
### Setup view file

```php

echo GridView::widget([
'dataProvider' => $dataProvider,**STEP 1:** Ensure your _Person_ model has a self join relation defined to itself. You can also implement a getter for ParentName.
### Setup base model

```php

/* ActiveRelation */
public function getParent() {**STEP 2:** Add an attribute _parentName_ to your model _PersonSearch_ and configure your rules.
### Setup search model attributes for search

```php

/* your calculated attribute */
public $parentName;**STEP 3:** Edit your _addCondition_ function in the model _PersonSearch_
### Setup search model condition

```php

protected function addCondition($query, $attribute, $partialMatch = false)
{**STEP 4:** Configure your gridview columns in your view _index_ file
### Setup view file

```php

echo GridView::widget([
'dataProvider' => $dataProvider,
'filterModel' => $searchModel,
'columns' => [
['class' => 'yii\grid\SerialColumn'],