PRADO Component Framework for PHP 5
  • Home
  • About
  • Testimonials
  • Demos
  • Download
  • Documentation
  • Forum
  • Development
  • Tutorials
  • Class Docs
  • API Manual
  • Wiki

Packages

  • None
  • System
    • Caching
    • Collections
    • Data
      • ActiveRecord
        • Relations
        • Scaffold
          • InputBuilder
      • Commom
        • Sqlite
      • Common
        • Mssql
        • Mysql
        • Oracle
        • Pgsql
        • Sqlite
      • DataGateway
      • SqlMap
        • Configuration
        • Statements
    • Exceptions
    • I18N
    • IO
    • Security
    • Util
    • Web
      • Javascripts
      • Services
      • UI
        • ActiveControls
        • WebControls
    • Xml
  • Wsat
    • pages
  • Overview
  • Package
  • Class
  • Tree
  • Deprecated
  • Todo

Package System\Data\ActiveRecord\Relations

Classes summary
TActiveRecordBelongsTo Implements the foreign key relationship (TActiveRecord::BELONGS_TO) between the source objects and the related foreign object. Consider the entity relationship between a Team and a Player. <code> +------+ +--------+ | Team | 1 <----- * | Player | +------+ +--------+ </code> Where one team may have 0 or more players and each player belongs to only one team. We may model Team-Player object relationship as active record as follows. <code> class TeamRecord extends TActiveRecord { // see TActiveRecordHasMany for detailed definition. } class PlayerRecord extends TActiveRecord { const TABLE='player'; public $player_id; //primary key public $team_name; //foreign key player.team_name <-> team.name public $age; public $team; //foreign object TeamRecord
TActiveRecordHasMany Implements TActiveRecord::HAS_MANY relationship between the source object having zero or more foreign objects. Consider the entity relationship between a Team and a Player. <code> +------+ +--------+ | Team | 1 <----- * | Player | +------+ +--------+ </code> Where one team may have 0 or more players and each player belongs to only one team. We may model Team-Player object relationship as active record as follows. <code> class TeamRecord extends TActiveRecord { const TABLE='team'; public $name; //primary key public $location;
TActiveRecordHasManyAssociation Implements the M-N (many to many) relationship via association table. Consider the entity relationship between Articles and Categories via the association table Article_Category. <code> +---------+ +------------------+ +----------+ | Article | * -----> * | Article_Category | * <----- * | Category | +---------+ +------------------+ +----------+ </code> Where one article may have 0 or more categories and each category may have 0 or more articles. We may model Article-Category object relationship as active record as follows. <code> class ArticleRecord { const TABLE='Article'; public $article_id;
TActiveRecordHasOne TActiveRecordHasOne models the object relationship that a record (the source object) property is an instance of foreign record object having a foreign key related to the source object. The HAS_ONE relation is very similar to the HAS_MANY relationship (in fact, it is equivalent in the entities relationship point of view).
TActiveRecordRelation Base class for active record relationships.
TActiveRecordRelationContext TActiveRecordRelationContext holds information regarding record relationships such as record relation property name, query criteria and foreign object record class names.
Terms of Service | Contact Us
PRADO v3.2.4 API Manual API documentation generated by ApiGen 2.8.0
Copyright © 2006-2014 by the PRADO Group.
Powered by PRADO