Question

I am creating an application in zend framework. Now i am stuck in the Zend table relationships.

I have 2 tables. I have set the primary key and the corresponding references in other tables.
Now i want to join the two tables using the relationships (not with the join functions). Is it possible in zend?

the tables structures are like the one below

Schemetable

scheme_id primary key

Scheme_name

Scheme_Desc

Ratestable

rate_id

Scheme_id *foreign key ref scheme_id*

rates:

Time periods:

There is an one to many relation b/w the scheme and rates

I have done some coding in the model classes

Scheme.php

class Scheme extends Zend_Db_Table_Abstract {


 protected $_name = 'schemetable';

 protected $_dependentTables = array('rates');
}

Rates.php

class Rates extends Zend_Db_Table_Abstract {


 protected $_name = 'ratetable';

 protected $_referenceMap = array(
   'Scheme' => array(
   'columns' => array('scheme_id'),  
   'refColumns' => array('scheme_id'), 
   'refTableClass' => 'Scheme',  
  ),
 );
}

How can i fetch every scheme and their corresponding rates?

Thanks in advance.

Answer 1

Please,
see the DOCS:

http://framework.zend.com/manual/en/zend.db.table.relationships.html

Fetching a Dependent Rowset

If you have a Row object as the result
of a query on a parent table, you can
fetch rows from dependent tables that
reference the current row. Use the
method:

$row->findDependentRowset($table);

Example #4 Fetching Dependent Rowsets
using the Magic Method

This example shows finding dependent
Rowsets equivalent to those in the
previous examples. In this case, the
application uses the magic method
invocation instead of specifying the
table and rule as strings.

  $accountsTable = new Accounts();
  $accountsRowset = $accountsTable->find(1234);
  $user1234 = $accountsRowset->current();

  // Use the default reference rule
  $bugsReportedBy = $user1234->findBugs();

  // Specify the reference rule
  $bugsAssignedTo = $user1234->findBugsByEngineer();

Fetching a parent row

If you have a Row object as the result
of a query on a dependent table, you
can fetch the row in the parent to
which the dependent row refers. Use
the method:

$row->findParentRow($table);

This example shows finding parent Rows
equivalent to those in the previous
examples. In this case, the
application uses the magic method
invocation instead of specifying the
table and rule as strings.

  $bugsTable = new Bugs();
  $bugsRowset = $bugsTable->fetchAll(array('bug_status = ?', 'NEW'));
  $bug1 = $bugsRowset->current();

  // Use the default reference rule
  $reporter = $bug1->findParentAccounts();

  // Specify the reference rule
  $engineer = $bug1->findParentAccountsByEngineer();