Class: Reform::Form::Validate::Populator::PopulateIfEmpty

Inherits:
Object
  • Object
show all
Includes:
Uber::Callable
Defined in:
lib/reform/form/validate.rb

Overview

This might change soon (e.g. moved into disposable).

Instance Method Summary collapse

Instance Method Details

#call(fields, fragment, *args) ⇒ Object 



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# File 'lib/reform/form/validate.rb', line 8

def call(fields, fragment, *args)
  index   = args.first
  options = args.last
  binding = options.binding
  form    = binding.get

  parent_form =  options.user_options[:parent_form]

  # FIXME: test those cases!!!
  return form[index] if binding.array? and form and form[index] # TODO: this should be handled by the Binding.
  return form if !binding.array? and form
  # only get here when above form is nil.


  if binding[:populate_if_empty].is_a?(Proc)
    model = parent_form.instance_exec(fragment, options.user_options, &binding[:populate_if_empty]) # call user block.
  else
    model = binding[:populate_if_empty].new
  end

  form  = binding[:form].new(model) # free service: wrap model with Form. this usually happens in #setup.

  if binding.array?
    # TODO: please extract this into Disposable.
    fields = fields.send(:fields)

    fields.send("#{binding.setter}", []) unless fields.send("#{binding.getter}") # DISCUSS: why do I have to initialize this here?
    fields.send("#{binding.getter}")[index] = form
  else
    fields.send("#{binding.setter}", form) # :setter is currently overwritten by :parse_strategy.
  end
end