Approach to implementing an AJAX callback to check say for duplicate records....

[natiki]

Hi,

One of the things we have a need to do quite often is check some form of "complex" validation client side that ultimately does not relate to only the view model being edited. Common examples might include:

• Checking for duplicates (ie is login name taken)
• Checking for association (ie is adding this record allowed based on a collection of other data)

So I was thinking of building a validator and in essence passing the necessary information to the client side which would then invoke a '.ajax' call back to the server which would ultimately do the heavy lifting.

Are there any issues with this approach or is there a better way? Or has someone already done something similair?

[natiki]

Bump!

[jwaliszko]

It's probably too late, nevertheless please excuse the lack of earlier response. There was an ongoing discussion under the following thread long time ago. As a result of that the first approach to asynchronous validation was implemented in the async-work branch, which is mentioned in the documentation. Currently there are no plans for merging this code into the master because it is still in a non-production stage, and probably this is not going to change anytime soon.

[natiki]

Thanks I will have a look.