我有一个User类，它可以有许多付款。用户将被保存，但付款不会。
class User < ActiveRecord::Base
attr_accessible :email, :password, :password_confirmation
attr_accessor :payments, :payments_attributes
attr_accessible :payments_attributes, :payments
has_many :payments, :inverse_of => :user, :autosave => true
accepts_nested_attributes_for :payments, allow_destroy: false
end
class Payment < ActiveRecord::Base
# it looks that I do not need the attr_accessor methods
#attr_accessor :method, :paid, :amount, :creditcard, :security_code, :expires_at
attr_accessible :method, :paid, :amount, :creditcard, :security_code, :expires_at
attr_accessible :created_at, :user_id
belongs_to :user, :inverse_of => :payments
validates_presence_of :method
end
我尝试过这种方法：
User.create!( { email: "asdf@asdf.com", payments: {paid: false, method: "bank"} } )
有没有一个解决方案可以在不通过的情况下做到这一点：
u = User.new(params)
u.payments(payments_params)
u.save!
这样做应该有效：
User.create!( {
"email" => "asdf@asdf.com",
"payments_attributes" => [{paid: false, method: "bank"}]
} )