Form#setSchema helper method to allow dynamic updating of schema

[philfreo]

I've needed to dynamically change a form schema and then re-render the form.

Right now you can say:

form.schema = newSchema

but then form.fieldsets, form.selectedFields, etc. get out-of-date and have to also be re-set manually.

I'd propose adding a setSchema helper method to Form to make this nicer.

[wyuenho]

I'd really prefer it if I could insert or remove fields with methods, which essentially calls createField internally and append or remove from the container. Rerendering is a no go on mobile. I don't thinks people would want the screen to be jumping around, losing focus to field but the keyboard is still hanging around etc as soon as I've picked a value from a select box.

The way I do it currently is to override the Form#render method and #initialize to listen to couple of key change events, the resulting code is quite nasty.

[philfreo]

Let's move discussion about this use case back to #273.

I opened this issue for other use cases where you plan on re-rendering the form anyway (when it's not currently visible) but want to update the schema first.

[philfreo]

Current workaround in the case where you want to take an existing form instance, tweak the schema, and re-display it:

form.schema = _.result(this.model, 'schema'); // or whatever
form.initialize();
form.render();

I'm not sure if calling initialize a 2nd time is OK. If so, this ticket can probably be closed. If not, then we should have a helper method that sets this.fields, this.fieldsets, etc. automatically.

[carofragueiro]

Hi! Has anyone found an answer to this problem ?

[vip32]

form.initialize(); works fine