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POCreating permalinks (slugs) in Rails - why is my test failing?
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copied!<p>I'm writing a small CMS as a Rails test project (also planning to use it for my personal website). I want SEO-friendly URLs so I have a test to verify that permalinks are automatically being created based on a page's title (e.g. About Us => about-us). I can't figure out why this test is failing, however. Here's the code (I'm using Rails 2.3.2):</p> <pre><code># page_test.rb # note I am using the "shoulda" framework require 'test_helper' class PageTest < ActiveSupport::TestCase should_validate_presence_of :title, :permalink, :content should_validate_uniqueness_of :title should "create permalink automatically" do p = pages(:sample_page) p.save assert_equal "sample-page", p.permalink end end # pages.yml sample_page: title: Sample Page permalink: # gets automatically created by model content: This is a sample page # page.rb class Page < ActiveRecord::Base validates_presence_of :title, :permalink, :content validates_uniqueness_of :title before_save :generate_permalink private def generate_permalink self.permalink = self.title.parameterize end end </code></pre> <p>What happens is that the permalink is nil, instead of "sample-page" like it's supposed to be. It works, however, if I manually put the permalink in the fixture and change the test around, for example:</p> <pre><code>p - pages(:sample_page) p.title = "Contact Us" p.save assert_equal "contact-us", p.permalink </code></pre> <p>I could fix it like this, but I'm wondering why it's not firing the before_save method for the original test.</p>

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