Filtering A Dataset Using the Spry Validation Select Widget

Question

Given the code below, how can I filter the rows in the
ds_BestConvertingByCategory dataset (in the spry:repeat area) that
match the product category (prodcat_id) selected in the Spry
Validation select widget?
// product categories table: columns - prodcat_id,
prodcat_desc
var ds_ProductCategories = new
Spry.Data.XMLDataSet("category_qry2xml.php", "product/category",
{useCache:false});
// has prodcat_id column
var ds_BestConvertingByCategory = new
Spry.Data.XMLDataSet("product_qry2xml.php", "special/deals[type =
'Best Converting']", {useCache:false});
// Spry regions inside a TabbedPanel
<div class="TabbedPanelsContent">
<form id="formOffersByCategory" class="frmsprysel"
name="formOffersByCategory" method="post" action="">
<strong>Select a Product Category: </strong>
<span spry:region="dsProductCategories"
id="spryselectProductByCategory">
<select spry:repeatchildren="ds_ProductCategories"
name="offersByCategory" id="offersByCategory"
onChange="ds_ProductCategories.setCurrentRowNumber(this.selectedIndex);">
<option spry:if="{ds_RowNumber} == {ds_CurrentRowNumber}"
value="{prodcat_id}"
selected="selected">{prodcat_desc}</option>
<option spry:if="{ds_RowNumber} != {ds_CurrentRowNumber}"
value="{prodcat_id}">{prodcat_desc}</option>
</select>
</span>
</form>
<div id="offersbycategory"
spry:region="ds_BestConvertingByCategory"
class="SpryHiddenRegion">
<table id="offersByCategoryTbl" width="100%">
<tr class="colhdr">
<th width="50%">Offer</th>
<th width="50%">Code</th>
</tr>
<tr spry:repeat="ds_BestConvertingByCategory">
<td width="50%">{displaytext}</td>
<td width="50%">{offer_code}</td>
</tr>
</table>
</div>
</div>
// Spry validation select widget
var spryselectProductByCategory = new
Spry.Widget.ValidationSelect("spryselectProductByCategory");

Answer 1

Hi flipone01,
To do this, make your region depend on both
ds_ProductCategories and ds_BestConvertingByCategory, then use the
spry:test attribute in conjunction with spry:repeat to weed out
items that don't have the same product id:
<div id="offersbycategory"
spry:region="ds_BestConvertingByCategory ds_ProductCategories"
<tr spry:repeat="ds_BestConvertingByCategory"
spry:test="{ds_BestConvertingByCategory::productcat_id} ==
{ds_ProductCategories::productcat_id}">
</div>
Remember that if you make a region depend on more than one
data set, you need to switch to using fully qualified data
references as the example above does (using the :: notation). If
you don't do that the data references default to the first data set
in the spry:region attribute.
--== Kin ==--