Yii2 implements methods to enable associated fields to support search functions_php example

The example in this article describes how Yii2 implements the search function for related fields. Share it with everyone for your reference, the details are as follows:

There are two tables here. The table structure is as follows, companies_compay_id is the foreign key

yii2advanced.branches table:

branch_id:int(11)
companies_company_id:int(11)
branch_name:varchar(100)
branch_address:varchar(255)
branch_created_date:datetime
branch_status:enum('active','inactive')

yii2advanced.companies table:

company_id:int(11)
company_name:varchar(100)
company_email:varchar(100)
company_address:varchar(255)
logo:varchar(200)
company_start_date:datetime
company_create_date:datetime
company_status:enum('active','inactive')

In the above table, you can use companiesCompany.company_name to get the company name, but this does not support search.

To support the search function, you need to add the following code to the index view of branches:

<&#63;= GridView::widget([
  'dataProvider' => $dataProvider,
  'filterModel' => $searchModel,
  'columns' => [
    ['class' => 'yii\grid\SerialColumn'],
    //添加的代码开始
    [
      'label'=>'公司名',
      'attribute'=>'companies_company_id',
      'value'=>'companiesCompany.company_name'
    ],
     //添加的代码结束
    'companiesCompany.company_name',
    // 'branch_id',
    // 'companies_company_id',
    'branch_name',
    'branch_address',
    'branch_created_date',
    // 'branch_status',
    ['class' => 'yii\grid\ActionColumn'],
  ],
]); &#63;>

Then modify SearchBranches.php

The method to modify the rules is:

public function rules()
{
  return [
    [['branch_id'], 'integer'],
    [['branch_name', 'branch_address', 'branch_created_date', 'branch_status','companies_company_id'], 'safe'],
  ];
}

Modify search method:

public function search($params)
{
  $query = Branches::find();
  $dataProvider = new ActiveDataProvider([
    'query' => $query,
  ]);
  $this->load($params);
  if (!$this->validate()) {
    // uncomment the following line if you do not want to any records when validation fails
    // $query->where('0=1');
    return $dataProvider;
  }
  // 添加下面这行代码
  $query->joinWith('companiesCompany');
  $query->andFilterWhere([
    'branch_id' => $this->branch_id,
  //  'companies_company_id' => $this->companies_company_id,
    'branch_created_date' => $this->branch_created_date,
  ]);
  $query->andFilterWhere(['like', 'branch_name', $this->branch_name])
    ->andFilterWhere(['like', 'branch_address', $this->branch_address])
    ->andFilterWhere(['like', 'branch_status', $this->branch_status])
     // 添加下面这行代码
    ->andFilterWhere(['like', 'companies.company_name', $this->companies_company_id]);
  return $dataProvider;

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Readers who are interested in more Yii-related content can check out the special topics of this site: "Introduction to Yii Framework and Summary of Common Techniques", "Summary of Excellent Development Framework of PHP", "Basic Tutorial for Getting Started with Smarty Templates", "Introduction to PHP Object-Oriented Programming" Tutorial", "php string (string) usage summary", "php+mysql database operation introductory tutorial" and "php common database operation skills summary"

I hope this article will help you design PHP programs based on the Yii framework.