def form_for(record, options = {}, &block)
raise ArgumentError, "Missing block" unless block_given?
options[:html] ||= {}
case record
when String, Symbol
object_name = record
object = nil
else
object = record.is_a?(Array) ? record.last : record
object_name = options[:as] || ActiveModel::Naming.param_key(object)
apply_form_for_options!(record, options)
end
options[:html][:remote] = options.delete(:remote) if options.has_key?(:remote)
options[:html][:method] = options.delete(:method) if options.has_key?(:method)
options[:html][:authenticity_token] = options.delete(:authenticity_token)
builder = options[:parent_builder] = instantiate_builder(object_name, object, options, &block)
output = capture(builder, &block)
default_options = builder.multipart? ? { :multipart => true } : {}
form_tag(options.delete(:url) || {}, default_options.merge!(options.delete(:html))) { output }
end