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Example code of bigdropinc/yii2-sti

Informations about the package yii2-sti

STI

This extension provides realization of single table inheritance

Installation

The preferred way to install this extension is through composer.

Either run

or add

to the require section of your composer.json file.

Usage

You can implement STI into your models by following with two steps:

More detailed usage can be found below.

Create a migration

Firstly to implement STI into database you should have STI column in database table. By default it named type, but you can choose whatever you want. Also you may want to add an index for this column. Your migration will looks like code below.

Active Record

Model witch should implement STI should extends from . The better way is to create an base ActiveRecord class for whole your project and extend all models from it.

Now STI mechanism will automatically switch on if STI column was found. To disable this behavior you may override method. You may set default value of STI column by overriding

By default STI column is a string and it's contain a class name. You may override to change this behavior

Finding models

For example you have some STI classes

You can simply save any instance of this models and STI column will be automatically saved into database.

By calling your will get models of all types User, Client and Manager Each record will be populated into an appropriate class according it STI column (type)

By calling or you will get only models of certain class.

ActiveQuery

Mechanism of finding records using the STI is implements by class. If you need to use your own ActiveQuery class with some logic with STI you should follow two simple steps:

Becomes

You can convert any model according STI scheme as in example below.

Pay attention that after one object becomes to another it should not be used anymore.

All versions of yii2-sti with dependencies

PHP Build Version
Package Version
Requires yiisoft/yii2 Version ~2.0.0
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