CiviCRM: Difference between revisions

CiviCRM (view source)

Revision as of 19:41, 5 August 2015

1,250 bytes added , 5 August 2015

adds custom search and database info

VisualWikitext

Freephile

Bureaucrats, confirmed, Administrators

4,558

edits

@@ Line 91: / Line 91: @@
 * See [https://civicrm.org/extensions/drupal listing of CiviCRM extensions for Drupal]
 * [http://wiki.civicrm.org/confluence/display/CRMDOC/Extensions Extensions documentation in the wiki]
+* [http://wiki.civicrm.org/confluence/display/CRMDOC/Create+a+Custom-Search+Extension Create a Custom Search extension]
 == Developing Extensions ==
@@ Line 102: / Line 102: @@
 <li> Use the [https://equality-tech.com/civicrm/api/doc#explorer 'API Explorer'] and the [https://equality-tech.com/civicrm/api/doc#docs 'API Docs'] interface that is available in your installation
 <li> http://wiki.civicrm.org/confluence/display/CRMDOC40/CiviCRM+Public+APIs
 <li> http://wiki.civicrm.org/confluence/display/CRMDOC/API+Examples
 <li> http://wiki.civicrm.org/confluence/display/CRMDOC/Using+the+API
@@ Line 109: / Line 108: @@
 </ol>
+== Database ==
+The database code in CiviCRM is divided into two logical sections: the DAO and the BAO.  The BAO holds the "business logic" for objects and extends the DAO.  The DAO is concerned with data to/from the database backend and it's definition (object to relational database mapping, aka "<abbr title="Object-relational Mapping">[[wp:Object-relational mapping|ORM]]</abbr>").  Both are an extension of the [https://pear.php.net/manual/en/package.database.db-dataobject.php PEAR DB DataObject] class.  As of August 2015, this is true and [https://civicrm.org/node/95 this blog post from 2006] gives some more (early) background.
+<source lang="php">
+// from CRM/core/DAO.php
+require_once 'PEAR.php';
+require_once 'DB/DataObject.php'
+class CRM_Core_DAO extends DB_DataObject
+</source>
+In 2009, [https://civicrm.org/node/597 Doctrine was proposed] as a OODB approach instead of an ORM.  There are [https://civicrm.org/blogs/dharmatech/data-mapper-pattern-civicrm-architecture-proposal other discussions too] in the "Architecture Series" that are worth reviewing if you want to know more about database development in CiviCRM.
 == Notes ==