Problem with duplicate SortOrders in child pages

Posted on 2012-04-01
Last Modified: 2012-06-21
Hi. I have coded myself into a corner. The problem: If I have two or more child pages that have the same SortOrder value, then only one of the child pages will display -- in my CMS, and in navigation. If I have four child pages with SortOrder "1", only one of them will display.

The solution I might implement is validation for the SortOrder field in the edit form. The value for SortOrder is entered in a text field:

<cfinput type="text" name="SortOrder" value="#editPage.SortOrder#" size="1" maxlength="2" />

I am thinking of solutions to ensure that a duplicate SortOrder value is not entered for a given data record, but the solutions seem cumbersome. (Eg. I could display a list of all child pages under a given parent, and their SortOrder values; then forbid entering those existing values in the SortOrder text field.) But I want to keep the edit interface as simple as possible for the user.

Maybe a much better solution is to just change my CMS and navigation menu to allow records with duplicate SortOrder values to display.

What do you think? How do you usually deal with duplicate SortOrder values?

Thank you for any advice.

Question by:Eric Bourland
  • 2
LVL 39

Accepted Solution

gdemaria earned 500 total points
ID: 37794227
Hey Eric - we'd have to see your code.  Typically, having duplicate sortOrder would not prevent something from showing.  The only negative effect would be that you can't predict the order of the two items with the same sortOrder.. you can always handle that with a 2nd sort column such as "title" or "name"

I recall that you were grouping by the sort order.. perhaps that's what you mean?   You want to order by your sortOrder but group by your ID or maybe Title... something that you know will change with each menu item..

Author Comment

by:Eric Bourland
ID: 37798106
I think I resolved this.

>>>You want to order by your sortOrder but group by your ID or maybe Title... something that you know will change with each menu item..

Exactly. I discovered this after some experimentation. So, I set the sort order in the query, with the ORDER BY clause:

<!--- get table columns for parent, child, grandchild records--->
<cfquery name="getPages" datasource="#APPLICATION.dataSource#">
       p.PageID     AS PageIDLevel1
      ,p.PageTitle  AS PageTitleLevel1
      ,p.SortOrder  AS SortOrderLevel1
      ,p.ParentID   AS ParentIDLevel1
      ,c.PageID     AS PageIDLevel2
      ,c.PageTitle  AS PageTitleLevel2
      ,c.SortOrder  AS SortOrderLevel2
      ,c.parentID   AS ParentIDLevel2
      ,gc.PageID    AS PageIDLevel3
      ,gc.PageTitle AS PageTitleLevel3
      ,gc.SortOrder AS SortOrderLevel3
      ,gc.parentID  AS ParentIDLevel3
      ,p.DateCreated AS DateCreatedLevel1
      ,p.DateModified AS DateModifiedLevel1
      ,c.DateCreated AS DateCreatedLevel2
      ,c.DateModified AS DateModifiedLevel2
      ,gc.DateCreated AS DateCreatedLevel3
      ,gc.DateModified AS DateModifiedLevel3
FROM #REQUEST.contentTable# p
                  LEFT JOIN #REQUEST.contentTable#  c ON c.parentID = p.pageID
                  LEFT JOIN #REQUEST.contentTable#  gc ON gc.parentID = c.PageID
WHERE   ISNULL(p.parentID, 0) = 0
ORDER BY p.SortOrder, c.SortOrder, gc.SortOrder

Open in new window

Then I use the CFOUTPUT GROUP attribute to sort not by SortOrder, but by PageTitle:

 <!--- display record information --->
 <cfoutput query="getPages" group="PageTitleLevel1">
(....display level 1 pages....)

   <cfoutput group="pageTitleLevel2">
        <cfif len(pageTitleLevel2)>
(....display level 2 pages....)
        <cfoutput group="PageTitleLevel3">
        <cfif len(PageTitleLevel3)>
(....display level 3 pages....)


That seems to work, and the pages are sorted by PageTitle, then by SortOrder.

I'll close this question in a while; thank you as always. You are my ColdFusion spirit guide. =)

My next task is to set up a way to allow users to easily move, for example, a child page under one parent to become a grandchild page under another child page. I'm working on some ideas for that; it is an interesting challenge.

Hope your day is going well.


Author Closing Comment

by:Eric Bourland
ID: 37799250
>>>You want to order by your sortOrder but group by your ID or maybe Title... something that you know will change with each menu item..

This was the key. Thank you as always, gdemaria.


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