How to use Hyperf framework for ORM relational mapping

How to use the Hyperf framework for ORM relational mapping

Introduction:
Hyperf is a high-performance PHP framework based on Swoole extension, which provides many powerful Features and components, including ORM (Object Relational Mapping) tools. This article will introduce how to use the Hyperf framework for ORM relational mapping and provide specific code examples.

1. Preparation
Before starting, make sure that the Hyperf framework has been installed and the database connection information is correctly configured.

2. Define the model
In the Hyperf framework, you need to create a model class corresponding to the database table. The model class should inherit from the HyperfDatabaseModelAbstractModel class and specify the table name and primary key.

use HyperfDbConnectionModelModel;

class User extends Model
{
    protected $table = 'users';
    protected $primaryKey = 'id';
}

3. Query data
Using Hyperf’s ORM tool, you can easily query the database and return results. The following are some examples of commonly used query methods:

1. Query all data:

$users = User::all();
foreach ($users as $user) {
    echo $user->name;
}

2. Query a single piece of data based on conditions:

$user = User::where('age', '>', 18)->first();
echo $user->name;

3. Query multiple pieces of data based on conditions:

$users = User::where('age', '>', 18)->get();
foreach ($users as $user) {
    echo $user->name;
}

4. Insert data
Using Hyperf's ORM tool, you can easily insert data into the database. The following is a sample code:

$user = new User();
$user->name = 'John';
$user->age = 25;
$user->save();

5. Update data
Using Hyperf's ORM tool, you can easily update the data in the database. An example is as follows:

$user = User::find(1); // 查找ID为1的记录
$user->name = 'Mary'; // 更新name字段
$user->save(); // 保存更新

6. Delete data
Using Hyperf’s ORM tool, you can also easily delete data in the database. Examples are as follows:

$user = User::find(1); // 查找ID为1的记录
$user->delete(); // 删除记录

7. Association relationships
In databases, there are often relationships between multiple tables. Hyperf's ORM tool also provides a convenient method for processing relationships. Here are some examples:

1. One-to-one association:

use HyperfDatabaseModelRelationsHasOne;

class User extends Model
{
    public function userProfile(): HasOne
    {
        return $this->hasOne(UserProfile::class, 'user_id', 'id');
    }
}

class UserProfile extends Model
{
    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class, 'user_id', 'id');
    }
}

In the above example, a one-to-one association is established between the User model and the UserProfile model. You can get the associated UserProfile model through $user->userProfile, or get the associated User model through $userProfile->user.

2. One-to-many association:

use HyperfDatabaseModelRelationsHasMany;

class User extends Model
{
    public function orders(): HasMany
    {
        return $this->hasMany(Order::class, 'user_id', 'id');
    }
}

class Order extends Model
{
    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class, 'user_id', 'id');
    }
}

In the above example, a one-to-many association is established between the User model and the Order model. You can get all associated Order models through $user->orders, or get the associated User model through $order->user.

8. Summary
This article introduces how to use the Hyperf framework for ORM relationship mapping and provides specific code examples. By using Hyperf's ORM tool, you can easily operate the database and handle various relationships to improve development efficiency.

In fact, Hyperf's ORM tool also provides more advanced functions, such as paging query, aggregation query, etc., readers can further explore according to their own needs. I hope this article can be helpful to readers when using the Hyperf framework for ORM relational mapping.

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