On Saturday, 6 July 2013 13:14:09 UTC-7, G-money wrote:
>
> Hey,
>
> I was thinking I'd have my controllers do double-duty: the same actions
> handling json and html requests differentially. For this, it's useful that
> Rails 3.2 automatic params hash conversion from json work (as described
> here<http://guides.rubyonrails.org/v3.2.13/action_controller_overview.html#json-xml-parameters>in
> the Rails docs). (I'm using ruby 1.9.2.) But it doesn't, that is, it
> seems I am required to decode the json params explicitly. Why?
>
> Here's an example of a post from my dev log...
>
> Processing by MarketlessPriceRequestsController#create as JSON
> Parameters: {"utf8"=>"✓",
> "price_request"=>"{\"prices_are_public_to_pricemakers\":false, ...
>
>
> Here's params[:price_request] in the controller
>
> {"prices_are_public_to_pricemakers":false, ...
>
>
> But it looks like I need to decode the json explicity to get to the
> accepted form...
>
> {"prices_are_public_to_pricemakers"=>false, ...
>
>
> Can I configure my controllers to help me avoid the explicit decode step?
>
>
+1 to Fred's suggestion: make sure the parameters are being *sent* as
application/json.
I'd also recommend double-checking the code that is sending the data - what
you're getting looks like what would result if you did something like this:
(in Rails)
render :json => { :price_request => @price_request.to_json }
(in JS)
$.post('/some_url', { price_request: JSON.generate(some_data_object) })
In both cases, there's two conversions to JSON going on - one explicit,
then the other implicit in the transmission (either the render or the post).
--Matt Jones
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