Solved

php, form select double order

Posted on 2011-09-14
12
268 Views
Last Modified: 2012-05-12
Hello,

I have a table with 3 columns id,parent,name I am using the below code to pull the parents and then the subs below. The issue I have is that the parents are not alphabetically ordered.

Can we alphabetically order the parents?

<select name="category">
                    <option value="0" style="color:#666;">Please Select</option>
                    <? $result= mysql_query("SELECT id, parent, name
                    FROM categories
                    ORDER BY COALESCE(NULLIF(parent, 0), id), parent, name")
                        or die(mysql_error());  
                        while($row = mysql_fetch_array( $result )) {
                            if($row['parent'] == '0') {
                                echo '<option disabled="disabled" class="select_category">'.$row['name'].'</option>';
                            } else { ?>
                                <option <? if($category == $row['id']){ echo 'selected="selected"'; } ?> value="<?=$row['id']?>"><?=$row['name']?></option>
                           <?  } } ?>
                    </select>

Open in new window

0
Comment
Question by:movieprodw
  • 6
  • 5
12 Comments
 
LVL 108

Accepted Solution

by:
Ray Paseur earned 250 total points
ID: 36536866
Maybe rearrange the ORDER BY clause to put the important parts first?
0
 
LVL 7

Assisted Solution

by:boon86
boon86 earned 250 total points
ID: 36537145
try change:

 $result= mysql_query("SELECT id, parent, name
                    FROM categories
                    ORDER BY COALESCE(NULLIF(parent, 0), id), parent, name")
                        or die(mysql_error());  

Open in new window

to:
 $result= mysql_query("SELECT id, parent, name
                    FROM categories
                    ORDER BY parent ASC")
                        or die(mysql_error());  

Open in new window


hope that help
0
 
LVL 1

Author Comment

by:movieprodw
ID: 36537176
Hello Ray,

That is what I was thinking, I am able to sort them by ORDER BY name, COALESCE(NULLIF(parent, 0), id), parent

but it breaks the grouping
0
 
LVL 1

Author Comment

by:movieprodw
ID: 36537193
You can see how it is displayed on the attached photo f
0
 
LVL 108

Expert Comment

by:Ray Paseur
ID: 36537195
What's the COALESCE(NULLIF part doing for you?  Not a technical explanation, just a plain language description of what it's expected to achieve, thanks.
0
 
LVL 1

Author Comment

by:movieprodw
ID: 36537322
It helps organize it by groups of parents, you can see the image above for a better understanding.
0
What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

 
LVL 108

Expert Comment

by:Ray Paseur
ID: 36537363
I am wondering if there is some kind of GROUP clause that might be helpful.  I am not familiar with using COALESCE and NULLIF together.  Not sure if this is in play:
http://bugs.mysql.com/bug.php?id=11142
0
 
LVL 1

Author Comment

by:movieprodw
ID: 36537433
Interesting, I am not sure.

It seems to work great except it is not ordering the parents alphabetically
0
 
LVL 108

Expert Comment

by:Ray Paseur
ID: 36537454
What kind of results do you get if you just ORDER BY parent, name
0
 
LVL 1

Author Comment

by:movieprodw
ID: 36537579
It sticks all of the parents up top then the sub-categories at the bottom
0
 
LVL 108

Expert Comment

by:Ray Paseur
ID: 36537762
Hmm... This is maybe too far afield but I will suggest it anyway.  Add an "ordering" column to the table.  You can put in some kind of gap numbers like 100, 200, 300 that will facilitate inserting things between 200 and 300.  Since this will only control ordering and not be part of the table's interaction with other tables, you will be able to renumber it if that is ever needed.
0
 
LVL 1

Author Closing Comment

by:movieprodw
ID: 36989707
Thanks for your help guys, sorry for the late closing
0

Featured Post

Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
PHP Healthcheck 2 81
mysqli 3 18
How do I put a session for a radio button? 4 12
PHP get array item with custom id 4 19
Popularity Can Be Measured Sometimes we deal with questions of popularity, and we need a way to collect opinions from our clients.  This article shows a simple teaching example of how we might elect a favorite color by letting our clients vote for …
Since pre-biblical times, humans have sought ways to keep secrets, and share the secrets selectively.  This article explores the ways PHP can be used to hide and encrypt information.
The viewer will learn how to dynamically set the form action using jQuery.
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

932 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

8 Experts available now in Live!

Get 1:1 Help Now