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We get the object state variables limit and limitstart and pass them to the
_getList() method. The _getList() method is used to get an array of objects from
the database based on a query and, optionally, limit and limitstart.
The _getList() method is defined in the JModel class.
The last two parameters will modify the first parameter, a query, in such a way that
we only return the desired results. For example if we requested page 1 and were
displaying a maximum of 5 items per page, the following would be appended to the
query: LIMIT 0, 5.
Ordering
It's generally nice to allow the user to select a column in a table from which they
want to be able to order itemized data. In Joomla!; we can use the JHTML grid.sort
type to achieve this.
Before we begin we must add two hidden fields to our form of itemized data,
filter_order and filter_order_Dir. The first defines the field by which we want
to order our data and the latter defines the direction in which we want to order our
data, ascending or descending.


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