Because classes are objects. So for example:

module Ispeak
  def says
    "greetings aliens!"
  end
end

module Ieat
  def eats
    "spinach"
  end
end

module Inhabitant
  def says
    "I'm strong to the finish"
  end
end

class H...

Files attached in a standard way are shown up as "noname". You can specify any name by using the :filename key:

attachment :content_type => "application/pdf",
         :filename     => "Othersheet.pdf",
         :body         => File.read("example.pdf")

If your popup title contains spaces or escaped HTML characters, Internet Explorer (at least 6/7) will not pop up a new window but open the link in the existing browser window.

If you want to implement last_week as posted by Mange, save it as:

==== lib/core_extensions.rb class Date def last_week(day = :monday) days_into_week = { :monday => 0, :tuesday => 1, :wednesday => 2, :thursday => 3, :friday => 4, :saturday => 5, :sunday => 6} result = (self - 7)...

If you need to set expiration period for sessions through all controllers in your application, simply add the following option to your config/intializers/session_store.rb file: :expire_after => 60.minutes If you need to set different expiration time in different controllers or actions, use the f...

For some reason the :object option is completely undocumented. Here's an example usage.

Renders the partial, making @new_person available through the local variable 'person'

render :partial => "person", :object => @new_person

(Credit goes to Catfish for the example, which I obtained from http:...

To make sure that you'll receive a array you should declare the name of the select with "[ ]" like that:

==== Example

<%= select_tag "users[]", options_for_select(@users.collect{|x| [x.name,x.id]}), {:multiple => :multiple, :size => 10} %>

It would seem like it would be possible to say, get everything from element i and to the end by saying # WRONG! a[i, -1] # "From 2 to the last element"

but since the second parameter does not say the ending index, but instead the length, this is not possible and you will get nil from the ab...

assert_select 'div', :count => 0

If you implement your own formbuilder, the options passed are available as @options inside your formbuilder. If you want those configuration options passed to all builders in the fields_for sections, use the following code in your form builder:

def fields_for_with_options(record_or_...

@tadman - or simply defining:

class Symbol def to_proc proc { |obj, *args| obj.send(self, *args) } end end

The key thing to note from post is that class_inheritable_accessor copies the value from the parent class at inherit time. So, if you are setting a default value of an array and doing something like the following you might end up with unintended results:

>> A.class_inheritable_foo << 'from a'...

If you want your form to be submitted when user selects something, use:

:onchange => "this.form.submit();"

For example:

select_tag "people", "<option>David</option>", :onchange => "this.form.submit();"

Sometimes you need use select not only with @object as by default. For example if you have helper method like :

def select_parent_for(page)
select(:page, :parent_id, Page.all.collect{|p| [p.name, p.id]} ) # <--- mistake!
end

In selected line you will use @page instead parameter of me...

Sometimes when writing unit tests/specifications our code sets an attribute of an object using Time.now because running specs/test takes time.

The solution is to "freeze" Time.now with the following Time.is method:

class Time

 def self.metaclass
   class << self; self; end
 end...

When creating fixtures you should use this method to set created_at/updated_at timestamps correctly:

eg:

This won't work as expected (created_at/updated_at will be nil) a one: episode: active1 play_id: 1 play_time: 20 country: United Kingdom created_at: <%= Time.parse('...

When creating fixtures you should use this method to set created_at/updated_at timestamps correctly:

eg:

This won't work as expected (created_at/updated_at will be nil) a one: episode: active1 play_id: 1 play_time: 20 country: United Kingdom created_at: <%= Time.parse('...

This is wrong ruby syntax:

assert_recognizes {:controller => 'items', :action => 'create'}, {:path => 'items', :method => :post}

Parentheses are obligatory in this case:

assert_recognizes({:controller => 'items', :action => 'create'}, {:path => 'items', :method => :post})

If you want to see administration panel:

assert_select "div.admin-panel"

But if you want to NOT see administration panel just write:

assert_no_tag 'div', :attributes => {:class => 'admin-panel'}

=== Example remote_function( :url => some_remote_function_path, :with => "'key1='+$('elem_id').value +'&key2='+$('elem_id').value+ '&this_elem_value='+value" )