Add get decode json data on params controller plugin

[lies]

No description provided.

[Ocramius]

@EvanDotPro you suggested caching the decoded json - is it such a big deal here?

I see more problems than anything coming from this, since the plugin is now unusable over multiple requests and/or internal forwards.

[Ocramius]

Yeah, after re-reading the method body, caching the decoded json is an overkill here. I'd just suggest getting rid of this.

Sorry about that, @lies

[Ocramius]

@lies for further changes, just push new commits to this branch - that will automatically update the pull request

[weierophinney]

I'm going to say "no" to this PR. The reason is that we really shouldn't be pushing this sort of functionality directly into the controllers; I'd actually prefer to be removing functionality from the base controllers at this point. Functionality like this should be via controller plugins. We've actually implemented this exact functionality already via zfcampus/zf-content-negotiation, in the bodyParams plugin. This allows you to do the following:

$params = $this->bodyParams();

or, to retrieve a single parameter:

$param = $this->bodyParam('name', 'defaultValue');

An approach like this keeps the ZF2 MVC lighter, makes the functionality opt-in, and, in this case, provides more possibilities for extension to support a larger number of mediatypes.

[lies]

:)