我有一个使用simple_form gem创建的表单,它使用嵌套属性填充2个模型。我想检查是否有任何错误并显示一个新块。但是,我不确定如何正确访问location
模型的Booking
属性的错误消息。
class Booking < ActiveRecord::Base
belongs_to :customer
attr_accessible :date_wanted, :location
end
和
class Customer < ActiveRecord::Base
has_many :bookings
accepts_nested_attributes_for :bookings
attr_accessible :name, :phone, :bookings_attributes
validates_presence_of :name, :phone
end
表单视图:
simple_form_for @customer, {:html => { :class => "form-horizontal" }} do |f|
= f.input :name
= f.input :phone
= f.simple_fields_for :bookings do |b|
= b.input :date
= b.input :location
- if @customer.errors[:appointments_attributes][:location]
# insert code if any validation errors for the date field were found
= f.button :submit
答案 0 :(得分:7)
b
是表单构建器的一个实例,持有booking
,因此您可以尝试:
# ...
if b.object.errors[:location]
# ...