Re: Dynamically add fields to form

Nathan Quirynen Tue, 07 May 2013 07:01:21 -0700

Hi,

I'm trying this now, but I'm already stuck on rendering the FormInjector. Form A is submitted with ajax, then I want to rerender a zone containing the FormInjector. This always results in:

No object of type org.apache.tapestry5.services.FormSupport is available from the Environment.

So I'm not sure on how to render the forminjector.

Nathan

On 03/05/13 18:36, Lance Java wrote:

Disclaimer: I've never used FormInjector before

I *think* you can do this but it will require a little trick. The
FormInjector adds a trigger() function to it's DOM element. The trigger()
function fires a serverside event passing the "context" attribute. In your
use case, the context is not known until Form A is posted.


 So, here's how I think you can do it:

 1. User enters values and submits FormA


2. onSuccessFromFormA()

                2.1 Save the record to the DB and get an identifier

                2.2 Return a Block which renders a FormInjector

                2.3 Set the "context" of the FormInjector to the record id

                2.4 Use _javascript_Support to fire the FormInjector's
trigger() event on the client



3. The FormInjector block renders clientside (zone is inside FormB)

                3.1 The _javascript_ from 2.4 fires another serverside event
passing the record identifier



4. Serverside event from trigger()

                4.1 Lookup the record from the DB using the context

                4.2 Return a Block containing a FormFragment



5. The block from 4.2 is inserted before/after the FormInjector

Re: Dynamically add fields to form

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