[rspec-users] RSpec view spec writing problem (unable to generate url_for in RESTful resource link_to)

Lance Carlson lancecarlson at gmail.com
Fri Sep 21 14:02:08 EDT 2007


BTW I know this is old, but did you know you can do this?

iink_to a.name, [@customer, @project],,{:class=>"show",:title=>"Show
> actor details"} ?

I'm having trouble mocking this my view specs right now as it is
giving me errors, but it works fine in rails edge. I will report on my
discoveries if anyone has figured out how to deal with this new way to
call polymorphic path helpers. any takers? My error is as follows:


1)
ActionView::TemplateError in 'Label Page should have a link to add a new artist'
edit_label_url failed to generate from {:action=>"edit",
:controller=>"labels", :id=>#<Label:0x..fdb3c5798
@name="Label_1000">}, expected: {:controller=>"labels",
:action=>"edit"}, diff: {:id=>#<Label:0x..fdb3c5798
@name="Label_1000">}
On line #3 of app/views/labels/show.rhtml

    3: <%= link_to 'Edit', [ @label, :edit ] %><br />

On 9/10/07, Scott Sehlhorst <scott at tynerblain.com> wrote:
> Thanks very much.  I feel like a bit of a fool, now, for the odd error.
>
> Changing from:
>       <%=
> link_to(a.name,actor_path(@customer, at project),{:class=>"show",:title=>"Show
> actor details"}) -%>
> To
>       <%=
> link_to(a.name,actor_path(@customer, at project,a),{:class=>"show",:title=>"Show
> actor details"}) -%>
>
> Caused everything to work like a champ.  And uncovered an interesting bug.
> When not specifying the actor 'a', the link is generated (in the page), but
> with id=1.  No idea if/when I would have caught that.
>
> Thanks again David, and all the RSpec'ers out there.
>
> Also, thanks for the multi-nesting pointer.
>
> Scott
>
>
>
> On 9/10/07, David Chelimsky <dchelimsky at gmail.com> wrote:
> > On 9/10/07, Scott Sehlhorst < scott at tynerblain.com> wrote:
> > > Thanks, first, to everyone who's asked and answered questions on this
> list,
> > > and to the creators of RSpec - it is all very helpful.  I've searched
> the
> > > mailing list, and had a couple 2hr googling sessions that didn't help me
> > > find an answer.
> > >
> > > I've run into a problem getting my first non-trivial view spec to run.
> I
> > > get an error when trying to generate a link_to() to another resource.
> Here
> > > is an overview of the situation, then the code:
> > >
> > >
> > > I'm using a restful design
> > > I'm using nested (multiply nested) resources
> > > I am trying to test a show.rhtml view, that includes links (link_to) to
> > > resources managed by another controller
> > > The use_case model has a many-to-may through relationship with actors,
> and
> > > I'm displaying links to the associated actors on the use_case page
> > > I can't get the links to generate when running rspec (but it works great
> in
> > > the app)
> > > I am in the early stages of the project, and want to move forward BDD,
> but I
> > > have some existing code that I need to test before I can start moving
> > > forward again.
> > > My theories:  I need to stub the controller (for the other resource), or
> I
> > > need to stub something else.
> > >
> > > Here's the command I'm running to drive RSpec
> > >
> > >  ruby script/spec -f s spec/views
> > >
> > > Here's the error that I get
> > >
> > >  1)
> > > ActionView::TemplateError in 'UseCase showing a use case should display
> the
> > > use case identifier'
> > >  actor_url failed to generate from {:customer_id=>"1",
> > > :controller=>"actors", :action=>"show", :project_id=>"1"}, expecte
> > > d: {:controller=>"actors", :action=>"show"}, diff: {:customer_id=>"1",
> > > :project_id=>"1"}
> > > On line #22 of app/views/use_cases/show.rhtml
> > >
> > >     19:   <ul>
> > >      20:         <% @primary_actors.each do |a| %>
> > >     21:         <li>
> > >      22:           <%=
> > >
> link_to(a.name,actor_path(@customer, at project),{:class=>"show",:title=>"Show
> > > actor details"}) -%>
> > >     23:           <%= link_to("Remove
> > >
> assignment",participation_path(@customer, at project, at use_case.participations.find_by
> > > _actor_id(a)),{:class=>"delete",:title=>"Remove the
> > > assignment of this actor to this use case", :confirm => 'Are you sur
> > > e you want to remove this assignment?', :method => :delete})-%>
> > >      24:         </li>
> > >     25:         <% end %>
> > >
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/routing.rb:1273:in
> > > `raise_named_route_error'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/routing.rb:1245:in
> > > `generate'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/url_rewriter.rb:104:in
> > > `rewrite_path'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/url_rewriter.rb:69:in
> > > `rewrite'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/base.rb:522:in
> > > `url_for'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_view/helpers/url_helper.rb:27:in
> > > `url_for'
> > >      (eval):19:in `actor_path'
> > >     #{RAILS_ROOT}/app/views/use_cases/show.rhtml:22:in
> > > `_run_rhtml_47app47views47use_cases47show46rhtml'
> > >     #{RAILS_ROOT}/app/views/use_cases/show.rhtml:20:in
> > > `_run_rhtml_47app47views47use_cases47show46rhtml'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_view/base.rb:326:in
> > > `compile_and_render_template'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_view/base.rb:301:in
> > > `render_template'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_view/base.rb:260:in
> > > `render_file'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/base.rb:806:in
> > > `render_file'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/base.rb:741:in
> > > `render_with_no_layout'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/layout.rb:256:in
> > > `render_without_benchmark'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:50:in
> > > `render'
> > >     c:/dev/ruby/lib/ruby/1.8/benchmark.rb:293:in
> `measure'
> > >
> > >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:50:in
> > > `render'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec_on_rails/lib/spec/rails/dsl/behaviour/view.rb:55:in
> > > `render'
> > >     spec/views/use_cases/show_view_spec.rb:40
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/dsl/composite_proc_builder.rb:17:in
> > > `proc'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/dsl/composite_proc_builder.rb:12:in
> > > `proc'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/dsl/example.rb:71:in
> > > `before_example'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/dsl/example.rb:25:in
> > > `run'
> > >     c:/dev/ruby/lib/ruby/1.8/timeout.rb:48:in `timeout'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/dsl/example.rb:24:in
> > > `run'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/dsl/behaviour.rb:81:in
> > > `run'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/dsl/behaviour.rb:75:in
> > > `run'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/runner/behaviour_runner.rb:58:in
> > > `run_behaviours'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/runner/behaviour_runner.rb:57:in
> > > `run_behaviours'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/runner/behaviour_runner.rb:21:in
> > > `run'
> > >
> > >
> C:/dev/svn/sherpa/vendor/plugins/rspec/lib/spec/runner/command_line.rb:17:in
> > > `run'
> > >      script/spec:4
> > >
> > > Here's part of my routes.rb, showing the nested resources
> > >
> > >   map.resources :customers do |customers|
> > >     customers.resources :projects do |projects|
> > >        projects.resources :actors
> > >       projects.resources :use_cases
> > >
> > >
> > > Here's some of the stubbing that I am using to set up the spec
> > >
> > >      @customer = mock_model(Customer,
> > >       :id => 1,
> > >        :to_param => "1"
> > >       )
> > >
> > >     @project = mock_model(Project,
> > >        :id => 1,
> > >       :customer_id => 1,
> > >        :to_param => "1"
> > >       )
> > >
> > > I've also stubbed objects to create the following :assigns
> > >
> > >     assigns[:customer] = @customer
> > >      assigns[:project] = @project
> > >     assigns[:use_case] = @use_case
> > >      assigns[:primary_actors] = @primary_actors
> > >
> > > I suspect that there is something else that needs to be stubbed - actors
> > > controller, maybe?  I really don't know.  If anyone can point me in the
> > > right direction, or tell me where in the error message to dig deeper,
> that
> > > would be awesome.
> > >
> > > If I left out any important information, please let me know!  And a huge
> > > thanks in advance to anyone who can help me out, or explain why this
> isn't
> > > supported, or point me towards any docs or articles that address this
> issue
> > > (because I will have it a zillion times, as almost all views in my app
> > > display content and links from more than one model).
> >
> > I don't think it's related to rspec. Note that the top of the error stack
> says:
> >
> >
> #{RAILS_ROOT}/vendor/rails/actionpack/lib/action_controller/routing.rb:1273:in
> > `raise_named_route_error'
> >
> > So the error is likely related to this bit:
> >
> >   actor_path(@customer, at project)
> >
> > Given the nesting that you're doing multi-level nesting (which is not
> > recommended btw - read
> > http://weblog.jamisbuck.org/2007/2/5/nesting-resources),
> I believe
> > that the path should be either:
> >
> > customer_project_actor_path(@customer, @project, @actor)
> >
> > or
> >
> > customer_project_actors_path(@customer, @project)
> >
> > HTH,
> > David
> > _______________________________________________
> > rspec-users mailing list
> > rspec-users at rubyforge.org
> > http://rubyforge.org/mailman/listinfo/rspec-users
> >
>
>
>
> --
> Scott Sehlhorst, President Tyner Blain LLC
>  http://tynerblain.com/blog
> http://tynerblain.com/nexus
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> rspec-users mailing list
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>


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