On Sunday, February 2, 2014 6:22:43 AM UTC, Bizt wrote:
> I've been trying to set default URL parameters in the controller, which will
> also be used within the view. This is what I've got:
>
> @params = params
>
> defaults = { :date_from => '21/1/21014', :date_to => '21/2/21014',
> :data=>"Expense" }
> if @params.any?
> @params = defaults.merge(@params)
> else
> @params = defaults
> end
>
> .. seems messy, and doesn't work :( When params are present it still uses the
> default params. Not sure where it's going wrong and search on google yields
> many varieties. I know using default values in methods is something that I
> will repeat again so I was wondering what the best practise is for handling
> this. Thanks
It doesn't work because @params isn't where params are stored. Params is never
empty (at a minimum :controller and :action are set) so you can get rid of the
else
You could update params in place , ie params.merge!(...).
Personally I wouldn't do this. I'd be more likely to have a controller method
called something like get_date_range that would get the dates from params that
would do things like parse the strings into actual dates and/or replace missing
params with defaults.
Fred
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