Allow Spring MVC Controllers to control which fragment(s) to render for a composite view [SWF-1090]

[spring-operator]

Keith Donald opened SWF-1090 and commented

Currently it is only possible to specify fragments client-side, which doesn't really mesh with MVC concepts and allows the client to render other views that should not be renderable for a given resource. Web Flow allows for controlling fragment rendering server-side, but Spring JavaScript's MVC integration does not. We should add support for this with Spring MVC.

Specification:

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A MVC Controller can return a String viewname in the format [compositeViewName]#[fragment1,fragmentN].

Example:

@RequestMapping(value="/application/info", method = RequestMethod.POST) public String processInfoSubmission(PersonalInfo personalInfo, BindingResult errors, AjaxHandler handler, Model model) { personalInfo.validate(errors); if (errors.hasErrors()) { return "application#info"; } contestantService.saveInfo(personalInfo); if (handler.isAjaxRequest()) { model.addAttribute("status", contestantService.getApplicationStatus()); return "application#status"; } else { return "redirect:/application/info"; } }

The example above says render the info fragment of the application composite when there are validation errors. Render the status fragment after successful submit and it's an ajax request.

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Affects: 2.0.6

Issue Links:

• #480 Add support for "modal:" view prefix

2 votes, 2 watchers

[spring-operator]

Keith Donald commented

Documentation, changelog, and tests will need updating for this improvement.