Sorting Listings: Difference between revisions

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*An id column containing a unique id for the record.
*An id column containing a unique id for the record.
*A slot column holding the value of the record’s position in the listings relative to all other records.
*A slot column holding the value of the record’s position in the listings relative to all other records.
[[Category:JQuery/AJAX]]
[[Category:CMS_Documentation]]
[[Category:CMS_Documentation]]
[[Category:JQuery/AJAX]]

Revision as of 12:23, 7 February 2012

Sections CMS

  • Hostmgr > Sections
  • Is Sortable: checked
  • Sorting URI: /hostmgr/_ajax/utils/resort.php (default shared AJAX handler script)

JavaScript

Shared JS library must be included on the page:

/scripts/littled/listings.js

Assign the sorting function to the LITTLED.setSortables property:

LITTLED.init({ setSortables: [SORTING_FUNCTION]});
LITTLED.setSortables();

A JQuery sorting initialization routine would be something like this:

$('#listings-table').sortable({
    items: 'tr.rec-row',
    start: function(event, ui) {
        var id = ui.helper.attr('data-rid');
        if (!id) {return;} /* parent record id not set */
 
        var $c = $('#pages-row-' + id);
        if ($c.length < 1) {return;} /* child row not available */
 
        /* hide children as the parent is dragged */
        if ($c.is('visible')) {
            $c.addClass('reopen');
            $c.hide();
        }
    },
    update: LITTLED.Listings.resort
});

A default resort initialization is defined within the LITTLED.Listings library:

LITTLED.Listings.bindResort()

To use a default resort (the selectors referenced above would need to be present with the page’s markup):

$(document).ready(function() {
    LITTLED.init({ setSortables: LITTLED.Listings.bindResort });
    LITTLED.setSortables();
});

For albums, LITTLED.Gallery.bindAlbumListingsHandlers will initialize resorting for the listings.

PHP

/_classes/site_content/cache_class.php

Add include directives for both the parent page’s content and content filter classes:

require_once (APP_CLASS_DIR."site_content/press_class.php");
require_once (APP_CLASS_DIR."site_filters/press_filters_class.php");

Update the set_filters() routine to include the filter class representing the page’s content type.

/_classes/site_content/cache_class.php

Potentially no changes need to be made to this class on a content-type-by-content-type basis as long as the default action for all content types is

if ($this->filters instanceof filters_collection_class)
{
    $this->filters->parse_filters();
    $this->filters->page_len->value = null; /* get all available records */
}

If some other action needs to be taken for a specific content type then a new case would need to be created in the retrieve_section_properties() routine.

Paging is handled with

include (COMMON_TEMPLATE_DIR."framework/navigation/listings_page_links.php");

HTML/CSS

List selectors, CSS classes, and HTML element attributes necessary for resorting.

table element attributes

  • id="listings-table" Selector used to identify table containing sortable rows.
  • data-tid Value is the content type of the records contained in the table that can be sorted.
  • data-p Index of the first record displayed on the page. Starts with 1. (For page 1 the value is 1. For page 10 with 5 records per page the data-p value is 51.)

tr element attributes

  • id="#rr-[SECTION_ID]-[RECORD_ID]" For each sortable row.
  • class="rec-row" For each row that is sortable.
  • data-rid Record id value.
  • id="pages-row-[XXX]" (Albums only) ID of elements where [XXX] is the id of the album.

MySQL

Tables with sortable records must contain

  • An id column containing a unique id for the record.
  • A slot column holding the value of the record’s position in the listings relative to all other records.