hyperf/docs/en/db/gen.md

Model creation script

Hyperf provides commands to create models, and you can easily create corresponding models based on data tables. The command generates the model via AST, so when you add certain methods, you can also easily reset the model with the script.

php bin/hyperf.php gen:model table_name

Create a model

The optional parameters are as follows：

Parameter	Type	Defaults	Remark
--pool	string	default	Connection pool, the script will be created based on the current connection pool configuration
--path	string	app/Model	model path
--force-casts	bool	false	Whether to force reset the casts parameter
--prefix	string	empty string	table prefix
--inheritance	string	Model	The parent class
--uses	string	Hyperf\DbConnection\Model\Model	Use with inheritance
--refresh-fillable	bool	false	Whether to refresh the fillable parameter
--table-mapping	array	[]	Add a mapping relationship for table name -> model such as ['users:Account']
--ignore-tables	array	[]	There is no need to generate the table name of the model e.g. ['users']
--with-comments	bool	false	Whether to add field comments
--property-case	int	0	Field Type: 0 Snakecase, 1 CamelCase

When using --property-case to convert the field type to camel case, you also need to manually add Hyperf\Database\Model\Concerns\CamelCase to the model. The corresponding configuration can also be configured in databases.{pool}.commands.gen:model, as follows

All struck-through need to be converted to underscores

<?php

declare(strict_types=1);

use Hyperf\Database\Commands\ModelOption;

return [
    'default' => [
        // Ignore other configurations
        'commands' => [
            'gen:model' => [
                'path' => 'app/Model',
                'force_casts' => true,
                'inheritance' => 'Model',
                'uses' => '',
                'refresh_fillable' => true,
                'table_mapping' => [],
                'with_comments' => true,
                'property_case' => ModelOption::PROPERTY_SNAKE_CASE,
            ],
        ],
    ],
];

The created model is as follows

<?php

declare(strict_types=1);

namespace App\Model;

use Hyperf\DbConnection\Model\Model;

/**
 * @property $id
 * @property $name
 * @property $gender
 * @property $created_at
 * @property $updated_at
 */
class User extends Model
{
    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table = 'user';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = ['id', 'name', 'gender', 'created_at', 'updated_at'];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = ['id' => 'integer', 'gender' => 'integer'];
}

Visitors

The framework provides several Visitors for users to extend the scripting capabilities. The usage is very simple, just add the corresponding Visitor in the visitors configuration.

<?php

declare(strict_types=1);

return [
    'default' => [
        // Ignore other configurations
        'commands' => [
            'gen:model' => [
                'visitors' => [
                    Hyperf\Database\Commands\Ast\ModelRewriteKeyInfoVisitor::class
                ],
            ],
        ],
    ],
];

Optional Visitors

• Hyperf\Database\Commands\Ast\ModelRewriteKeyInfoVisitor

This Visitor can generate the corresponding $incrementing $primaryKey and $keyType according to the primary key in the database.

• Hyperf\Database\Commands\Ast\ModelRewriteSoftDeletesVisitor

This Visitor can judge whether the model contains soft delete fields according to the DELETED_AT constant, and if so, add the corresponding Trait SoftDeletes.

• Hyperf\Database\Commands\Ast\ModelRewriteTimestampsVisitor

This Visitor can automatically determine, based on created_at and updated_at, whether to enable the default recording of created and modified times.

• Hyperf\Database\Commands\Ast\ModelRewriteGetterSetterVisitor

This Visitor can generate corresponding getters and setters based on database fields.

Override Visitor

In the Hyperf framework, when gen:model is used, decimal is converted to float by default. as follows:

<?php

declare(strict_types=1);

namespace App\Model;

/**
 * @property int $id
 * @property int $count
 * @property float $float_num // decimal
 * @property string $str
 * @property string $json
 * @property \Carbon\Carbon $created_at
 * @property \Carbon\Carbon $updated_at
 */
class UserExt extends Model
{
    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table = 'user_ext';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = ['id', 'count', 'float_num', 'str', 'json', 'created_at', 'updated_at'];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = ['id' => 'integer', 'count' => 'integer', 'float_num' => 'float', 'created_at' => 'datetime', 'updated_at' => 'datetime'];
}

At this point, we can modify this feature by overriding ModelUpdateVisitor.

<?php

declare(strict_types=1);
/**
 * This file is part of Hyperf.
 *
 * @link     https://www.hyperf.io
 * @document https://hyperf.wiki
 * @contact  group@hyperf.io
 * @license  https://github.com/hyperf/hyperf/blob/master/LICENSE
 */
namespace App\Kernel\Visitor;

use Hyperf\Database\Commands\Ast\ModelUpdateVisitor as Visitor;
use Hyperf\Utils\Str;

class ModelUpdateVisitor extends Visitor
{
    protected function formatDatabaseType(string $type): ?string
    {
        switch ($type) {
            case 'tinyint':
            case 'smallint':
            case 'mediumint':
            case 'int':
            case 'bigint':
                return 'integer';
            case 'decimal':
                // Set to decimal, and set the corresponding precision
                return 'decimal:2';
            case 'float':
            case 'double':
            case 'real':
                return 'float';
            case 'bool':
            case 'boolean':
                return 'boolean';
            default:
                return null;
        }
    }

    protected function formatPropertyType(string $type, ?string $cast): ?string
    {
        if (! isset($cast)) {
            $cast = $this->formatDatabaseType($type) ?? 'string';
        }

        switch ($cast) {
            case 'integer':
                return 'int';
            case 'date':
            case 'datetime':
                return '\Carbon\Carbon';
            case 'json':
                return 'array';
        }

        if (Str::startsWith($cast, 'decimal')) {
            // If cast is decimal, @property is changed to string
            return 'string';
        }

        return $cast;
    }
}

Configure the mapping relationship dependencies.php

<?php

return [
    Hyperf\Database\Commands\Ast\ModelUpdateVisitor::class => App\Kernel\Visitor\ModelUpdateVisitor::class,
];

After re-executing gen:model, the corresponding model is as follows:

<?php

declare (strict_types=1);

namespace App\Model;

/**
 * @property int $id 
 * @property int $count 
 * @property string $float_num 
 * @property string $str 
 * @property string $json 
 * @property \Carbon\Carbon $created_at 
 * @property \Carbon\Carbon $updated_at 
 */
class UserExt extends Model
{
    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table = 'user_ext';
    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = ['id', 'count', 'float_num', 'str', 'json', 'created_at', 'updated_at'];
    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = ['id' => 'integer', 'count' => 'integer', 'float_num' => 'decimal:2', 'created_at' => 'datetime', 'updated_at' => 'datetime'];
}