Rails%203%20In%20Action

288 CHAPTER 11 Tagging
And I press "Create Ticket"
Then I should see "Ticket has been created."
And I should see "browser" within "#ticket #tags"
And I should see "visual" within "#ticket #tags"
When you run the “Creating a ticket with tags” scenario using bin/cucumber features
/creating_tickets.feature:50 it will fail, declaring that it can’t find the Tags field.
Good! It’s not there yet:
And I fill in "Tags" with "browser visual"
cannot fill in, no text field, text area or password field
with id, name, or label 'Tags' found (Capybara::ElementNotFound)
You’re going to take the data from this field, process each word into a new Tag object,
and then link the tags to the ticket when it’s created. You’ll use a text_field_tag to
render the Tags field this way. text_field_tag is similar to a text_field tag, but it
doesn’t have to relate to any specific object like text_field does. Instead, it will output
an input tag with the type attribute set to text and the name set to whatever
name you give it.
11.1.2 Using text_field_tag
To define this field, you put the following code underneath the p tag for the description
in app/views/tickets/_form.html.erb:
This field will be sent through to TicketsController as params[:tags], rather than
the kind of attributes you’re used to, such as params[:ticket][:title].
By specifying params[:tags] as the second argument to text_field_tag, you can
re-populate this field when the ticket cannot be created due to it failing validation.
When you re-run this scenario again with bin/cucumber features/creating
_tickets.feature:51, it no longer complains about the missing Tags field, telling
you instead that it can’t find the tags displayed on your ticket:
And I should see "browser" within "#ticket #tags"
Unable to find css "#ticket #tags" (Capybara::ElementNotFound)
You now need to define this #tags element inside the #ticket element on the ticket’s
page so that this part of the scenario will pass. This element will contain the tags for
your ticket, which your scenario will assert are actually visible.
11.1.3 Showing tags
You can add this new element, with its id attribute set to tags, to app/views/tickets/
show.html.erb by adding this simple line underneath where you render the ticket’s
description: