link_to has no controller and no action

Question

I have a view with the following link generator:

- @tags.each do |tag|
  = link_to tag.name, :controller => "images", :action => "#{tag.name}"

@tags is Tag.all. It displays the links with the correct names, mouseover shows e.g.

http://localhost:3000/Images/tagname

but if I click on one the error is:

No route matches {:controller=>"", :action=>""}

How can it say :controller is empty when I specified :controller => "images"?

rake routes (relevant part):

images GET           /images(.:format)                     images#index
POST                 /images(.:format)                     images#create
new_image GET        /images/new(.:format)                 images#new
edit_image GET       /images/:id/edit(.:format)            images#edit
image GET            /images/:id(.:format)                 images#show
PUT                  /images/:id(.:format)                 images#update
DELETE               /images/:id(.:format)                 images#destroy
tags GET             /Images(.:format)                     tags#index
POST                 /Images(.:format)                     tags#create
new_tag GET          /Images/new(.:format)                 tags#new
edit_tag GET         /Images/:id/edit(.:format)            tags#edit
tag GET              /Images/:id(.:format)                 tags#show
PUT                  /Images/:id(.:format)                 tags#update
DELETE               /Images/:id(.:format)                 tags#destroy

One tag e.g. is "saturn", so I added this route too in routes.rb:

match '/Images/saturn'                => 'images#saturn'

which leads to:

Images_saturn        /Images/saturn(.:format)              images#saturn

I also have a method "saturn" in my images controller.

more stack trace? quite possibly it's the view that you're linking *to* which contains the bad url helper method, not the view with these tag links. after all, if you had a routing error in this view, you'd get the error when you tried to load it, not when you tried to leave it. — gregates, Sep 27 '12 at 14:11

score 0 · Answer 1 · answered Sep 27 '12 at 14:06

0

Try

= link_to tag.name, {:controller => "images", :action => "#{tag.name)}"}

answered Sep 27 '12 at 14:06

Rubyman

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score 0 · Answer 2 · answered Sep 27 '12 at 14:15

0

You have an extra ")" after

"#{tag.name)}"

answered Sep 27 '12 at 14:15

monangik

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Sorry, my fault, in the code it was correct. I have corrected it in the question above now. – user929062 Sep 27 '12 at 14:17

score 0 · Accepted Answer · answered Sep 27 '12 at 14:27

0

Looks to me like you have a capitalization issue. You have in your routes both /images and /Images ... Can you try fixing that?

answered Sep 27 '12 at 14:27

likethesky

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link_to has no controller and no action

3 Answers3