Rails - Feb 2006 - How switching global layout (application.rthml <or> custom.rhtml)

Dears,

My railsapp run using ''/layout/application.rhtml'' and under
some
conditions ( Authenticated user, url parameter) I like to switch
globally to another layout, let''s say custom.rhtml

Like :

class AppController < ApplicationController
  before_filter :context_layout

  def index
  end
end

# application.rb
def context_layout
    if <context_condition>
       layout(''custom'')
    end
end


But layout() call is not available into application.rb, and writing

class AppController < ApplicationController

  layout(''custom'')

  def index
  end
end

Works,but it''s impossible to add here test conditions like @params.

The layout method accept a conditions={} parameters, but I dont figure
out how use it.

Thanks for helping

Mathieu

what about this

# application.rb
def context_layout
   if <context_condition>
      @session[:layout] = ''newlayout''
   else
      @session[:layout] = ''oldlayout''
  end
end

then in the top of your controllers after your before_filter do:

layout "#{@session[:layout]}"


On 2/2/06, Mathieu Chappuis <mathieu.chappuis.lists@gmail.com>
wrote:
> Dears,
>
> My railsapp run using ''/layout/application.rhtml'' and
under some
> conditions ( Authenticated user, url parameter) I like to switch
> globally to another layout, let''s say custom.rhtml
>
> Like :
>
> class AppController < ApplicationController
>   before_filter :context_layout
>
>   def index
>   end
> end
>
> # application.rb
> def context_layout
>     if <context_condition>
>        layout(''custom'')
>     end
> end
>
>
> But layout() call is not available into application.rb, and writing
>
> class AppController < ApplicationController
>
>   layout(''custom'')
>
>   def index
>   end
> end
>
> Works,but it''s impossible to add here test conditions like
@params.
>
> The layout method accept a conditions={} parameters, but I dont figure
> out how use it.
>
> Thanks for helping
>
> Mathieu
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

Thanks Adam

That''s look pretty DRY but not works.
> then in the top of your controllers after your before_filter do:
>
> layout "#{@session[:layout]}"
>
Unless I''m a noob , @session or @params are NOT available on the
begining of a controller. (before methods definitions) and give a nil
exception.

Cheers,
Mathieu

class ApplicationController

  layout :determine_layout   # symbol indicates it''s a method call in
this case...

  # ...and here''s the method
  def determine_layout
    if user_is_logged_in?
      "name_of_your_template"
    elsif params[:whatever]
      "name_of_another_template"
    else
       "default_template_name" # default
    end
  end
end

... basically lifted from page 370 of the book.

On 2/2/06, Mathieu Chappuis <mathieu.chappuis.lists@gmail.com>
wrote:
> Dears,
>
> My railsapp run using ''/layout/application.rhtml'' and
under some
> conditions ( Authenticated user, url parameter) I like to switch
> globally to another layout, let''s say custom.rhtml
>
> Like :
>
> class AppController < ApplicationController
>   before_filter :context_layout
>
>   def index
>   end
> end
>
> # application.rb
> def context_layout
>     if <context_condition>
>        layout(''custom'')
>     end
> end
>
>
> But layout() call is not available into application.rb, and writing
>
> class AppController < ApplicationController
>
>   layout(''custom'')
>
>   def index
>   end
> end
>
> Works,but it''s impossible to add here test conditions like
@params.
>
> The layout method accept a conditions={} parameters, but I dont figure
> out how use it.
>
> Thanks for helping
>
> Mathieu
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

--
* J *
  ~

Thank you James,
>   layout :determine_layout   # symbol indicates it''s a method call
in
> this case...
This way rocks,