注意：在回答问题之前，请了解这与attr_accessible或attr_protected 无关，有问题的 RAILS 是3.1.3和 Ruby 1.9.2p290
没有进一步到期这里我尝试将我的参数大量分配给 DriverLicense 模型
{"utf8"=>"✓",
"authenticity_token"=>"cKhruPzVvBK63bqCQPFY8xPZb12V5lhLPOpXgjIToJk=",
"driver_license"=>
{"license_number"=>"LICENCE-001",
"license_class"=>"A-CLASS",
"validity_start_date"=>"02/01/2011",
"validity_end_date"=>"08/24/2011",
"issuing_authority"=>"RTO",
"remarks"=>"Remarks .."},
"save_button"=>"Save",
"action"=>"create",
"controller"=>"driver_licenses",
"driver_id"=>"2"}
这里是控制器代码
@driver_license = @driver.driver_licenses.new(params[:driver_license])
这里模型的定义看起来像
class DriverLicense < ActiveRecord::Base
acts_as_tenant(:tenant)
validates :driver_id,:license_number,:validity_start_date,:validity_end_date,:presence => true
validate :date_validity ,:if => :is_date_present?
validate :overlapping_validity,:if => :validity_start_date_present?
belongs_to :driver
scope :active_licenses , where('validity_start_date <= ? and validity_end_date >= ?',Date.today,Date.today)
.... ....
.... ....
private
def is_date_present?
validity_start_date.present? and validity_end_date.present?
end
def date_validity
errors.add(:validity_start_date,"must be earlier then validity end date") if validity_start_date > validity_end_date
end
def validity_start_date_present?
validity_start_date.present?
end
def overlapping_validity
arel = self.class.where('validity_end_date >= ?',validity_start_date).where('driver_id = ?',driver_id)
arel = arel.where('id != ?',id) if id.present?
unless arel.count.zero?
errors.add(:validity_start_date,"overLapping date with other licenses")
end
end
end
mass-attributes 适用于除validity_end_date 之外的所有属性
#<DriverLicense id: nil, driver_id: 2, license_number: "LICENCE-001", license_class: "A-CLASS", issuing_authority: "RTO", validity_start_date: "2011-01-02", validity_end_date: nil, remarks: "Remarks ..", tenant_id: 2, created_at: nil, updated_at: nil>
一旦可以在屏幕截图上进一步检查，质量分配适用于除validity_end_date之外的所有属性
