yii2 using multiple database instance methods

Regarding yii2 configuration and operation of multiple databases, the document also gives specific configurations. A practical example is also very simple. Here we take the permission control as a single management library dbname2 and the business library dbname as an example. Let's see how to configure multiple databases. This article mainly introduces to you the cases of using multiple databases in yii2, hoping to help you.

No1. In the first step, we can refer to most of Baidu's documents.

'components' => [
  'db' => [
    'class' => 'yii\db\Connection',
    'dsn' => 'mysql:host=ip;dbname=dbname',
    'username' => 'username',
    'password' => 'pwd',
    'charset' => 'utf8',
  ],
  'db2' => [
    'class' => 'yii\db\Connection',
    'dsn' => 'mysql:host=ip;dbname=dbname2',
    'username' => 'username',
    'password' => 'pwd',
    'charset' => 'utf8',
  ],
],

No2. In the second step, here we open the configuration file main.php and add four permission-related data table configurations to the authManager option.

'authManager' => [
  'class' => 'yii\rbac\DbManager',
  'defaultRoles' => ['guest'],
  'itemTable' => 'dbname2.auth_item',
  'itemChildTable' => 'dbname2.auth_item_child',
  'assignmentTable' => 'dbname2.auth_assignment',
  'ruleTable' => 'dbname2.auth_rule',
],

In fact, the four properties of the vendor\yiisoft\yii2\rbac\DbManager.php class are configured here. This should be consistent with the above and directly change the project configuration file.

No3. It’s almost done here. Some students have questions. I haven’t read it yet, so why is it over? So what do you think I should do with my user table and menu table? Don't worry, let's take a look at the third step:

This step is also very simple. We can simply configure it as follows

Find your project config\params.php file, just add the following configuration items

'mdm.admin.configs' => [
  'menuTable' => 'dbname2.menu',
  // 'userTable' => 'dbname2.user',
],

Note, why the configuration item userTable is blocked above, it depends on the individual To configure, open the file vendor\mdmsoft\yii2-admin\components\Configs.php and check if there is a userTable attribute. If there is, you need to configure it here. If not, try configuring it to see if it will report an error

There is still one step left, the last step is also an example.

We take the above userTable as an example. If we use gii to generate a model file User.php, because the default configured table is located in the dbname library, and our user table is in the dbname2 library. table, so we need to modify the tableName method of the User.php model file and add the library name in front of the table.

public static function tableName()
{
  return 'dbname.user';
}

Related recommendations:

Code for CI to operate multiple databases in php

phpHow to connect multiple databases at the same time_PHP tutorial

PHP How to write query statements between multiple databases

The above is the detailed content of yii2 using multiple database instance methods. For more information, please follow other related articles on the PHP Chinese website!