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Coldfusion Column Sorting

Posted on 2001-09-07
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Last Modified: 2013-12-20
I want to know how to sort the columns of a query.  I know how to do it via the SQL statement.  What I need is for a user to be able to pull up the webpage with query and click on the column headings of the table to sort it by that column(asc AND desc would be great...).  For example...  Lets say I have a table called "music", and I have fields: ID, Artist, Title, Description, and etc.  I want the user to be able to click on ID to sort the table by ID and if they click on Artist, sort by artist, and etc.  If there is anyone who can help me on this, it would be greatly appreciated.
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Question by:bptacek
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snakehollywood earned 150 total points
ID: 6464528
Put buttons into your table headers that will act as the sort button.
When the button is clicked on, it will pass the name of the column to sort into a hidden form field, and then submit the form back to the same page.

e.g

<td><input type="submit" name="sortorder" value="Name" onclick="document.forms[0].orderby.value='name ASC'"></td>

this puts a button into your column header, which when clicke don, will pass the value "name ASC" into the hidden form field called orderby.

At the top of the page you simply check for the existance of the form button, if it exists then apply a dynamic where clause using the hidden formfield.

e.g

<cfquery>
select * from table
<cfif isdefined('form.sortorder')>
order by #form.orderby#
</cfif>
</cfquery>

this will order your query by the column "name" in ascending order.

Now you just create buttons for each column you wish to sort. You can use image buttons for ASC and DESC options.

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by:bptacek
ID: 6464741
Thanks snakehollywood, that makes sense.  Thanks again!
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