limingxinleo/phalcon-eager-loading

Phalcon Eager Loading

phalcon-eager-loading

Phalcon Eager Loading, _(*1)

安装

突然发现 phalcon/incubator 中已经有了eager load, _(*2)

composer require phalcon/incubator

use Phalcon\Mvc\Model\EagerLoadingTrait

使用

<?php
use Phalcon\Mvc\Model\EagerLoading\Loader,
    Phalcon\Mvc\Model\EagerLoading\QueryBuilder;

$robotsAndParts = Robot::with('Parts');

// Equivalent to:

$robots = Robot::find();
foreach ($robots as $robot) {
    $robot->parts; // $robot->__get('parts')
}

// Or

$robot = Robot::findFirst()->load('Parts');

// Equivalent to:

$robot = Robot::findFirst();
$robots->parts; // $robot->__get('parts')

// Because Robot::find() returns a resultset, so in that case this is solved with:
$robots = Loader::fromResultset(Robot::find(), 'Parts'); # Equivalent to the second example

// Multiple and nested relations can be used too
$robots = Robot::with('Parts', 'Foo.Bar');

// And arguments can be passed to the find method
$robots = Robot::with('Parts', 'Foo.Bar', ['limit' => 5]);

// And constraints
$robots = Robot::with(
    [
        'Parts',
        'Foo.Bar' => function (QueryBuilder $builder) {
            // Limit Bar
            $builder->limit(5);
        }
    ],
    [
        'limit' => 5
    ]
);