实体常量

Testing Is Documentation

tests/Database/Ddd/EntityDefineTest.php

实体初始化会校验一些必须定义的常量 const，这是实体对应的数据库表的一些映射，这简化了 ORM 底层后续处理逻辑。

Uses

<?php
use Leevel\Database\Ddd\Entity;
use Leevel\Database\Ddd\GetterSetter;
use Tests\Database\DatabaseTestCase as TestCase;
use Tests\Database\Ddd\Entity\DemoEntity;

基本常量

基础常量

常量 TABLE,ID,AUTO 和 STRUCT 是每一个实体必须要定义的，否则会抛出异常。

• TABLE 数据库表名，例如 test
• ID 主键字段，例如 null,id 和 ['id1', 'id2']
• AUTO 自增字段，例如 null 和 id
• STRUCT 数据库字段 ['id' => [self::READONLY => true], 'name' => []]

测试模型

namespace Tests\Database\Ddd\Entity;
use Leevel\Database\Ddd\Entity;
use Leevel\Database\Ddd\GetterSetter;
class DemoEntity extends Entity
{
    use GetterSetter;
    const TABLE = 'test';
    const ID = 'id';
    const AUTO = 'id';
    const STRUCT = [
        'id' => [
            self::READONLY => true,
        ],
        'name' => [],
    ];
}
``
``` php
public function testBaseUse(): void
{
    $entity = new DemoEntity();
    $this->assertInstanceof(Entity::class, $entity);
    $this->assertSame(DemoEntity::STRUCT, $entity->fields());
    $this->assertSame(DemoEntity::TABLE, $entity->table());
    $this->assertSame(DemoEntity::ID, $entity->primaryKey());
    $this->assertSame(DemoEntity::AUTO, $entity->autoIncrement());
}

基本常量未定义将会抛出异常

测试模型

namespace Tests\Database\Ddd;
class Test1Entity extends Entity
{
    use GetterSetter;
}

public function testConstDefined(): void
{
    $this->expectException(\InvalidArgumentException::class);
    $this->expectExceptionMessage('The entity const TABLE was not defined.');
    $entity = new Test1Entity();
}