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Change database value without page-load?

Posted on 2015-01-14
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Last Modified: 2015-01-19
Hi,

I got a page which contain a lot of rows from a table.
The db-table got a "locked" column (ENUM "0","1").

I display a lock/unlock image to the user, based on the value of this column.
Is it possible to change db value and replace image without a page-load?
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Question by:kgp43
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Ray Paseur earned 350 total points
ID: 40548688
The "without a page load" part seems to imply that you would make an AJAX request.  The short answer is "yes, you can do that."  There is an article here that gives the design pattern of a PHP / jQuery AJAX implementation.   It shows how to get around the "page load" issues and still accomplish back-and-forth communication with the server via the standard request/response.
http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/Jquery/A_10712-The-Hello-World-Exercise-with-jQuery-and-PHP.html

More about the nature of HTTP:
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/A_11271-Understanding-Client-Server-Protocols-and-Web-Applications.html
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by:Elxn
Elxn earned 150 total points
ID: 40551404
Got a version of this working on my site.  See it here: http://girlzunderground.com/ee.html

Do you need the code explained to you?

You'll need to change all the image names in the javascript code and you'll also need to change what page the ajax call is made to.

Just change the actual image name, you shouldn't have to worry about the path as long as the two images (lock.png / unlock.png) are in the same folder.

Also, you see the function accepts the parameter "id"; this is posted to the page as well--you might want to put the id of the record in the onclick event in the image tag (right now its 1, 2, or 3) and this value will get sent to your page as well.  THought you might want that.
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Author Closing Comment

by:kgp43
ID: 40557786
Thank's alot guys, exactly what I was looking for :)
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Expert Comment

by:Ray Paseur
ID: 40557803
Thanks for the points and best of luck with your project, ~Ray
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