Ruby on Rails

On Friday, February 20, 2015 12:06:34 AM Javix wrote:
>
> On Wednesday, 18 February 2015 18:46:54 UTC+1, Arup Rakshit wrote:
> >
> > Hi,
> >
> > I have the below resource table Comment controller :
> >
> > [arup@app]$ rake routes | grep comments
> > comments GET /comments(.:format) comments#index
> > POST /comments(.:format)
> > comments#create
> > new_comment GET /comments/new(.:format) comments#new
> > edit_comment GET /comments/:id/edit(.:format) comments#edit
> > comment GET /comments/:id(.:format) comments#show
> > PATCH /comments/:id(.:format)
> > comments#update
> > PUT /comments/:id(.:format)
> > comments#update
> > DELETE /comments/:id(.:format)
> > comments#destroy
> >
> > Now, I am trying to figure out what I read from the guide -
> > http://guides.rubyonrails.org/v4.1.8/routing.html#creating-paths-and-urls-from-objects
> >
> > =======
> > If you wanted to link to just a magazine:....
> > For other actions, you just need to insert the action name as the first
> > element of the array:...
> > =======
> >
> > I tried -
> >
> > helper.link_to("Show comment", [Comment.first], method: :get)
> > helper.link_to("Show comment", Comment.first, method: :get)
> > helper.link_to("Show comment", [:show, Comment.first])
> > helper.link_to("Show comment", Comment.first, method: :get)
> >
> > Always I'm getting the error as : ArgumentError: arguments passed to
> > url_for can't be handled. Please require routes or provide your own
> > implementation
> >
> > Any idea what am I doing wrong ? I am not getting the result as guide
> > promised. :-)
> >
> > Why do you prefix link_to with 'helper ? To point to a comments#show, just
> use
> link_to 'Show comment", Comment.first
>
>
> or
> link_to 'Show comment", comment
>
>
> if you have a *comment *instance variable defined in 'show' action of the
> CommentsController.
>
> Your Comment is a RESTful resource and have all the standard RESTful
> methods defined by default according to your routes. So, no need to precise
> the GET in your link_to helper in the view.

My point was in rails console, not inside the erb template.

--
================
Regards,
Arup Rakshit
================
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.

--Brian Kernighan

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