Community contributions, tips, and corrections to the documentation. (1708 notes)
Here are the above examples in a somewhat more readable format:
# Assert a basic route: a controller with the default action (index)
assert_routing ‘/home’, :controller => ‘home’, :action => ‘index’
# Test a route generated with a specific controller, action, and parameter (id)
a...
I didn't knew how to wrap the output with tag. I didn't want to use raw html, but the doc doesn't mention another way.
So, here is what I tried and it's working:
<%= f.select :entry, option_groups_from_collection_for_select(@categories, :entries, :name, :id, :name) %>
I hop...
==== For Rails 3.1 check see:
http_basic_authenticate_with :name => "username", :password => "pass"
If you want to give your attachment a name, you can do this:
attachment :filename => 'my_file.txt', :body => File.read('/var/null')
It will appear to the recipient as a file named "my_file.txt" rather than something awful like "noname 1".
@wiseleyb and @glosakti, neither of your suggestions are necessary, and both are bad practices.
This test:
test "transactions" do
assert_raises ZeroDivisionError do
User.transaction do
1/0
end
end
end
passes just fine on its own, with the transaction rolled bac...
If you need to place some simple logic in class or like that, I think that best to make it with simple brackets:
====Code example
<%= link_to 'All actions', switch_action_tab_path, :remote => true, :class => ('selected' if @tab == 'all') %>
At least in console, doing unscoped.all or unscoped.count initially returns expected results but, after you've added new records outside of the default_scope those two calls seem to use some cached values.
Therefore it should always be used with the block (as they sort of imply in the doc). unscop...
This method (and #auto_link_urls) has been removed in Rails 3.1 - other options are out there, such as Rinku, however there is a gem you can use for migration purposes etc, which is rails_autolink: http://rubygems.org/gems/rails_autolink
You should also have a look at https://github.com/twg/active_link_to if you need an 'active' class on your links.
If you want to use polymorphic routing for your object but you also need to specify other stuff like an anchor, you can explicitly generate the polymorphic url with extra options:
form_for @candidate,
:url => polymorphic_path(@candidate, :anchor => 'signup')
From rails 3, before_validation_on_create has been removed and replaced with:
before_validation :foo, :on => :create
http://railscasts.com/episodes/202-active-record-queries-in-rails-3
Since this is deprecated, one can watch the Railcast for upgrading to 3.x
The equivalent is the ActiveRecord finder methods. http://apidock.com/rails/ActiveRecord/Fixture/find
E.g.
class TestClass < SomeSuperClass
attr_accessor :sample_acc
def initialize
@sample_acc = []
super
end
end
If nil is not a valid value for this accessor, then you can just define reader for it.
class TestClass
attr_accessor :sample_acc
def sa...
You can use undocumented +:location+ option to override where +respond_to+ sends if resource is valid, e.g. to redirect to products index page instead of a specific product's page, use:
respond_with(@product, :location => products_url)
For example to change some kind of param on select change...
<%= form_tag({}, {:method => :get}) do %>
<%= select_tag :new_locale, options_for_select(I18n.available_locales, I18n.locale), :onchange => "this.form.submit();" %>
<% end %>
Also, there is a difference in the way returns are handled from the Proc. A return from Proc.new returns from the enclosing method. Return in lambda-block acts like in regular method.
=== return example def proc_return Proc.new { return "Proc.new"}.call return "proc_return method finish...
Both 2.5 and 1.5 are rounded to 2...
ree-1.8.7-2010.02 > sprintf("%.f", 0.5)
=> "0"
ree-1.8.7-2010.02 > sprintf("%.f", 1.5)
=> "2"
ree-1.8.7-2010.02 > sprintf("%.f", 2.5)
=> "2"
ree-1.8.7-2010.02 > sprintf("%.f", 3.5)
=> "4"
ree-1.8.7-2010.02 > sprintf("%.f"...
... without passing locale option.
In your application_helper.rb (or in other helper) place following code:
def number_to_currency(number, options = {})
options[:locale] ||= I18n.locale
super(number, options)
end
Then, in your locale files: en-GB: number: currency:...