ActiveRecord

Introduction

Windwalker Record is a simple ActiveRecord to operate database row.

New a instance.

use Windwalker\Record\Record;

// Record object for users table
$user = new Record('users');

Or create a class:

use Windwalker\Record\Record;

class UserRecord extends Record
{
    protected $table = 'users';
}

$user = new UserRecord;

Load A Record

$user->load(25); // Load by primary key

$user->load(array('alias' => $alias)); // Load by field name.

Check row exists

try
{
    $record->load(25);
}
catch (NoResultException $e)
{
    // Handle error
}

Bind Data

$data = array(
    'name'     => 'Sakura',
    'username' => 'sakura',
    'alias'    => 'sakura',
    'password' => '1234',
    'desc'     => 'foo bar.'
);

$user->bind($data);

$user->name; // Sakura

If we have a table with only 3 columns:

The fields which not in this table will be remove after binding data.

$user->alias; // null

That makes our fields in Record will always same as DB table.

Store

Create A New Row

If primary not exists, Record will create a new row in table.

$data = array(
    'name'     => 'Sakura',
    'username' => 'sakura',
    'password' => '1234'
);

$user->bind($data);

$user->store();

echo $user->id; // Auto generated id

Update A Existing Row

If primary key exists, Record will update it.

$data = array(
    'id'       => 30,
    'name'     => 'Sakura',
    'username' => 'sakura',
    'password' => '1234'
);

$user->bind($data);

$user->store();

Validate

Check method help you validate data.

class UserRecord extends Record
{
    // ...

    public function validate()
    {
        if (!$this['name'])
        {
            throw new InvalidArgumentException('Name empty.');
        }

        return true;
    }
}

Then we call validate() before store().

$user->bind($data)
    ->validate()
    ->store();

Delete

$user->load(30);
$result = $user->delete(); // boolean

// OR delete by conditions

$result = $user->delete(30); // boolean
$result = $user->delete(array('username' => $username)); // boolean

Mutator and Accessor

Mutator and accessor is a setter and getter to do some extra modification when you access value via magic methods.

This is an example of mutator:

class ArticleRecord extends Record
{
    protected function setCreatedDateValue($value)
    {
        if ($value instanceof \DateTime)
        {
            $value = $value->format('Y-m-d H:i:s');
        }

        $this->data['created_date'] = $value;
    }
}

Use camel-case style to define a method, then when you access the created_date field, this method will be auto executed.

$articleRecord->created_date = new \DateTime('now');

echo $articleRecord->created_date; // 2016-03-02 12:30:29

And an example of accessor:

class ArticleRecord extends Record
{
    protected function getCreatedDateValue($value)
    {
        return new \DateTime($value);
    }
}

And now you can get DateTime object back:

echo $articleRecord->created_date->format('Y-m-d H:i:s'); // 2016-03-02 12:30:29

Casts

Add casts to auto convert value type after read from DB:

<?
class SakuraRecord extends Record
{
    protected $casts = [
        'id' => 'int',
        'price' => 'string',
        'created' => 'datetime',
        'modified' => 'timestamp',
        'images' => 'object', // or array will be json decoded
        'params' => \Windwalker\Structure\Structure::class,
        'other' => ['SomeClass', 'handle'] // Use callback
    ];
}

$sakuraRecord->load(3);

$sakuraRecord->id; // 3
$sakuraRecord->price; // '1200.00'
$sakuraRecord->created->format('Y/d/m'); // Auto convert to DateTime object
$sakuraRecord->modified; // 1497067876
$sakuraRecord->images[0]->url; // Store json in DB, can will auto decode to object.
$sakuraRecord->params->get('foo.bar'); // Use class name to store value to object

Supports casts:

• int | integer
• real | float | double
• string
• bool | boolean
• object
• array | json
• date | datetime
• timestamp
• (Class name)
• (Callback array)

NestedRecord

NestedRecord is a tool help us handle Nested Set Model.

Create Table

Name: categories

Initialise

Every nested set should have a root node.

$cat = new NestedRecord('categories');

$cat->createRoot();

NOTE: The root node id is 1.

Create Node

Set as first child of ROOT

$cat->bind($data)
    ->setLocation(1, NestedRecord::LOCATION_FIRST_CHILD)
    ->store();

Now we will have a new node and it id is 2. Create a new node as last child of 2.

$cat->bind($data)
    ->setLocation(2, NestedRecord::LOCATION_LAST_CHILD)
    ->store();

Available positions:

• LOCATION_FIRST_CHILD
• LOCATION_LAST_CHILD
• LOCATION_BEFORE
• LOCATION_AFTER

Move Node

Re Ordering

$cat->move(1); // move up
$cat->move(-1); // Move down

Move To Other Node

Move to node 3 as last child.

$cat->moveByReference(3, NestedRecord::LOCATION_LAST_CHILD);

Rebuild

If a tree was not correct, using rebuild to reset all lft, rgt of this branch.

$cat->load(5);
$cat->rebuild(); // Rebuild node: 5 and it's children.

getPath

Method to get an array of nodes from a given node to its root.

$path = $cat->getPath();

getTree

Method to get a node and all its child nodes.

$records = $cat->getTree();

Event

Record has an event system that we can process logic before & after every DB operation.

Add event methods in your Record class.

class UserRecord extends Record
{
    public function onAfterLoad(Event $event)
    {
        $this->foo = array('a', 'b', 'c');
    }
}

Or add listeners to Dispatcher (You must install windwalker/event first).

// Use listener object
$record->getDispatcher()->addListener(new MyRecordListener);

// Use callback
$record->getDispatcher()->listen('onAfterStore', function (Event $event)
{
    // Process your logic
});

Available events:

• onBeforeLoad
• onAfterLoad
• onBeforeStore
• onAfterStore
• onBeforeDelete
• onAfterDelete
• onBeforeBind
• onAfterBind
• onBeforeCreate
• onAfterCreate
• onBeforeUpdate
• onAfterUpdate

See Events

If you found a typo or error, please help us improve this document.