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Ruby Build a Todo List Application with Rails 4 Build a Todo List Application with Rails 4 Validating Length

John Jobe
John Jobe
1,603 Points
Posted by John Jobe
John Jobe
1,603 Points

I am receiving an error that states "uninitialized constant" which is accompanied by a deprecation warning.

Failures:

1) Creating todo lists displays an error when the todo list has no title Failure/Error: expect(Todolist.count).to eq(0) NameError: uninitialized constant Todolist # ./spec/features/todo_lists/create_spec.rb:17:in `block (2 levels) in <top (required)>'

2) Creating todo lists displays an error when the todo list has a title less than 3 characters Failure/Error: expect(Todolist.count).to eq(0) NameError: uninitialized constant Todolist # ./spec/features/todo_lists/create_spec.rb:35:in `block (2 levels) in <top (required)>'

Deprecation Warnings:

RSpec::Core::ExampleGroup#example is deprecated and will be removed in RSpec 3. There are a few options for what you can use instead:

  • rspec-core's DSL methods (it, before, after, let, subject, etc) now yield the example as a block argument, and that is the recommended way to access the current example from those contexts.
  • The current example is now exposed via RSpec.current_example, which is accessible from any context.

  • If you can't update the code at this call site (e.g. because it is in an extension gem), you can use this snippet to continue making this method available in RSpec 2.99 and RSpec 3:

    RSpec.configure do |c| c.expose_current_running_example_as :example end

(Called from /home/treehouse/.rbenv/versions/2.0.0-p353/lib/ruby/gems/2.0.0/gems/capybara-2.1.0/lib/capybara/rspec.rb:20:in `block (2 levels) in <top (required)>')

2 Answers

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Hi John,

Based on the error you appear to have a typo as you have Todolist but the l is lowercase not uppercase, simply change it to TodoList and the error should go away, as for the deprecation error you won't need to worry about that for the moment as until Rspec 3 is released the tests will run as shown in the video.

Sahil Prajapati
Sahil Prajapati
8,524 Points
Sahil Prajapati
Sahil Prajapati
8,524 Points

Hi John,

For removing the deprecation warning you should open this file spec/spec_helper.rb and then add the line config.expose_current_running_example_as :example like this:

RSpec.configure do |config|

#add this line inside the block
config.expose_current_running_example_as :example

end

This should work for you.

Akbar Khatibi
Akbar Khatibi
8,137 Points
Akbar Khatibi
Akbar Khatibi
8,137 Points

where exactly does this go? does it matter? just before the last end?