Rails: Accessing helper methods from a controller

Rails 3+

view_context.helper_method('args')

Rails 2

ApplicationController.helpers.helper_method('args')

Also see [How to use helper methods inside a model](https://makandracards.com/makandra/1307-how-to-use-hel...

There are a few ways to access view helpers from the Rails console. The easiest way is the helper shortcut:

helper.translate 'i18n.string'
helper.your_helper_method

If the desired helper renders a view template, you need this setup:

`...

You can quickly access views that belong to a controller by using the tiny "page with arrow" icon in the gutter:

Access a method's view file

Click ...

Rails has always included a scaffold script that generates a default controller implementation for you. Unfortunately that generated controller is unnecessarily verbose.

When we take over Rails projects from other teams, we often find that cont...

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In Rails 5 you can say:

ApplicationController.render(
  :template => 'users/index',
  :layout => 'my_layout',
  :assigns => { users: @users }
)

...

If you have any class which requires access to some path methods generated by your routes. Even though you could technically include Rails.application.routes.url_helpers, this may include way too many methods and even overwrite some class method...

When using form_for you can give the form's target URL either as a string or an array:

form_for(admin_user_path(@user)) do ... end
# same as:
form_for([:admin, @user]) do ... end

Same for link_to:

link_to("Label", edit_admin_u...

In this example we assume that not only the storage gem changes but also the file structure on disc.

A general approach

Part A: Create a commit which includes a script that allows you to copy the existing file to the new file structure.
...

Given those modules:

module A
  def foo; end
  def bar; end
end

module B
end

When you want to call methods from A inside B you would normally just include A into B:

module B
  include A
end

Includin...