Method: MethodOrProcHelper#call_method_or_proc_on

Defined in:
lib/active_admin/view_helpers/method_or_proc_helper.rb

#call_method_or_proc_on(receiver, *args) ⇒ Object

Many times throughout the views we want to either call a method on an object or instance_exec a proc passing in the object as the first parameter. This method wraps that pattern.

Calling with a String or Symbol:

call_method_or_proc_on(@my_obj, :size) same as @my_obj.size

Calling with a Proc:

proc = Proc.new{|s| s.size }
call_method_or_proc_on(@my_obj, proc)

By default, the Proc will be instance_exec’d within self. If you would rather not instance exec, but just call the Proc, then pass along ‘exec: false` in the options hash.

proc = Proc.new{|s| s.size }
call_method_or_proc_on(@my_obj, proc, exec: false)

You can pass along any necessary arguments to the method / Proc as arguments. For example:

call_method_or_proc_on(@my_obj, :find, 1) #=> @my_obj.find(1)



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# File 'lib/active_admin/view_helpers/method_or_proc_helper.rb', line 49

def call_method_or_proc_on(receiver, *args)
  options = { exec: true }.merge(args.extract_options!)

  symbol_or_proc = args.shift

  case symbol_or_proc
  when Symbol, String
    receiver.send(symbol_or_proc.to_sym, *args)
  when Proc
    if options[:exec]
      instance_exec(receiver, *args, &symbol_or_proc)
    else
      symbol_or_proc.call(receiver, *args)
    end
  end
end