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Friday 30 May 2003 6:08:00 am
++SITUATION:
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I'm wanting to use the value of a select-box / submit combination to change the presentation of a list of objects. For example, changing select-box selection to 'sports books' means only book objects with enum attribute 'sports book' are displayed, changing drop-box to 'computer books' means only computer books are displayed etc. I've got stuck trying to pass and retrieve the select-box value to a re-loaded version of the page listing the objects.
++APPROACH:
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I've done the following:
- Created class of book objects, with subject attribute
- Created series of book objects under a folder node
- created an override template on the folder node to handle the drop-box function described above.
- Included a form at the top of the template with the following code:
{let classchild=fetch( 'content', 'node', hash(node_id, 96))}
<Form>
<select name="Category">
{section name=EnumList loop=$classchild.data_map.publication_type.content.enum_list}
{section name=ObjectList loop=$classchild.data_map.publication_type.content.enumobject_list show=$classchild.data_map.publication_type.content.enumobject_list}
<option name="ContentObjectAttribute_data_enumelement_{$classchild.data_map.publication_type.id}[]" value="{$EnumList:item.enumvalue}" >{$EnumList:item.enumelement}</option>
{section-else}
<option name="ContentObjectAttribute_data_enumelement_{$classchild.data_map.publication_type.id}[]" value="{$EnumList:item.enumelement}">{$EnumList:item.enumelement}</option>
{/section}
{/section}
</select>
<input type="submit" value="Go" />
</form>
The code does the following:
- gets enum elements from an example of the object class (in this case, object 96)
- creates a select box that lists the name of the enum elements and uses the enum values
- on pressing the go/submit button, the current page reloads, with the value of the select-box added, as follows... http://www.mydomain.com/index.php/user/content/view/full/88/?Category=3
++QUESTION
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I can't seem to pick up that value from within the template code and use it once the page has been reloaded. Does anyone have any good ideas how to do this?
++Attempts so far...
Although it hasn't worked, I have tried using ezHTTPTool, likethe following:
{$http =& eZHTTPTool::instance();
if ( $http->hasPostVariable( $Category ) )
$CurrCat = $http->getVariable( $Category );}
This approach follows the code outlined in
http://www.ez.no/developer/ez_publish_3/forum/developer/is_the_posted_values_global_httphaspostvariable_poblem/re_is_the_posted_values_global_httphaspostvariable_poblem Any clues, thoughts or radical insights gratefully accepted! Thanks - Paul
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