First, create a model class that extends think\Model. Below is an example of how to implement a trigger:
namespace app\model; use think\Model; class UserTriggerModel extends Model { // Set the trigger table name protected $table = 'user'; // Set trigger event types protected $events = [ 'before_insert', 'before_update', 'before_delete', ]; // before_insert trigger event protected function beforeInsert($data) { // Trigger action logic // For example: handle actions before inserting a record } // before_update trigger event protected function beforeUpdate($data) { // Trigger action logic } // before_delete trigger event protected function beforeDelete($data) { // Trigger action logic } }
In this example, we define three trigger events: before_insert, before_update, and before_delete. By overriding the corresponding methods in the model class, we can automatically execute predefined actions when a record is inserted, updated, or deleted in the database.
In your business logic, you can trigger these actions using the following code:
$user = new UserTriggerModel(); $user->data([ 'name' => 'John', 'age' => 20, ])->save();
When this code is executed, the beforeInsert method will be triggered automatically, allowing you to add your own logic to be executed before the insert operation.
Below is an example of how to create and call a stored procedure:
namespace app\model; use think\Model; class UserProcedureModel extends Model { // Call a stored procedure public function callProcedure() { $sql = "CALL user_count()"; $result = $this->query($sql); return $result; } }
In this example, we define a method called callProcedure to execute the stored procedure user_count(). We use $this->query() to execute the SQL query and return the result.
To call the stored procedure and retrieve the result in your business logic, you can use the following code:
$user = new UserProcedureModel(); $result = $user->callProcedure();
This code will call the user_count stored procedure and store the result in the $result variable, allowing you to process it further.