A method for checking if a cached fragment exists when a certain condition is true. The first parameter is that condition, the rest are the normal parameters for ActionController::Caching::Fragments.read_fragment

Examples

A default call, the equivalent of read_fragment()

  if conditional_read_fragment(@current_user.nil?)
    # code that should not be run if there's a cache
  end

Passing additional caching params works in the same way

  if conditional_read_fragment(@current_user.nil?, :page => params[:page])
    # ...
  end

[Source]

    # File lib/fragment_caching.rb, line 29
29:     def conditional_read_fragment(conditional, name={}, options = nil)
30:       return read_fragment(name, options) if conditional
31:     end