rails 3.1，为什么设计不能建立资源？
我注意到，在Devise::RegistrationsController创建函数中执行build_resource之后，创建的资源属性都是空白的
这里是发送的params对象：
"student"=>{"first_name"=>"George",
"last_name"=>"Michle",
"company_name"=>"Meri",
"work_title"=>"Architect",
"address"=>"Moon",
"postal_code"=>"23410",
"work_phone"=>"",
"home_phone"=>"",
"mobile_phone"=>"",
"fax"=>"",
"email"=>"gion@gmail.com",
"password"=>"[FILTERED]",
"password_confirmation"=>"[FILTERED]",
"country_id"=>"2",
"state_province_id"=>"2"}
这里是结果资源属性：
[["address", ""], ["city", nil], ["company_name", ""], ["country_id", 1], ["created_at", Wed, 08 Feb 2012 04:52:35 UTC +00:00], ["current_sign_in_at", nil], ["current_sign_in_ip", nil], ["email", ""], ["encrypted_password", ""], ["fax", ""], ["first_name", ""], ["home_phone", ""], ["last_name", ""], ["last_sign_in_at", nil], ["last_sign_in_ip", nil], ["license_number", nil], ["mobile_phone", ""], ["postal_code", ""], ["remember_created_at", nil], ["reset_password_sent_at", nil], ["reset_password_token", nil], ["sign_in_count", 0], ["state_province_id", nil], ["updated_at", Wed, 08 Feb 2012 04:52:35 UTC +00:00], ["username", nil], ["work_phone", ""], ["work_title", ""]]
那么，为什么build_resource无法填充参数？ 在哪里寻找解决这个问题？ 任何帮助将不胜感激。
编辑：
这是学生模型：
class Student < ActiveRecord::Base
has_many :students_courseses
has_many :courses , :through => :students_courseses
# Include default devise modules. Others available are:
# :token_authenticatable, :encryptable, :confirmable, :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable, :timeoutable
belongs_to :country
#validates :weburl, :url => {:allow_blank => true}, :length => { :maximum => 50 }
validates_length_of :work_phone, :is => 10, :message => 'must be 10 digits, excluding special characters such as spaces and dashes. No extension or country code allowed.', :if => Proc.new{|o| !o.work_phone.blank?}
validates_length_of :home_phone, :is => 10, :message => 'must be 10 digits, excluding special characters such as spaces and dashes. No extension or country code allowed.', :if => Proc.new{|o| !o.home_phone.blank?}
validates_length_of :mobile_phone, :is => 10, :message => 'must be 10 digits, excluding special characters such as spaces and dashes. No extension or country code allowed.', :if => Proc.new{|o| !o.mobile_phone.blank?}
validates_length_of :fax, :is => 10, :message => 'must be 10 digits, excluding special characters such as spaces and dashes. No extension or country code allowed.', :if => Proc.new{|o| !o.fax.blank?}
# Setup accessible (or protected) attributes for your model
attr_accessible :email, :password, :password_confirmation, :remember_me
attr_accessible:username
attr_accessible:first_name
attr_accessible:last_name
attr_accessible:address
attr_accessible :city
attr_accessible :state_province_id
attr_accessible :country_id
attr_accessible:postal_code
attr_accessible:work_phone
attr_accessible:home_phone
attr_accessible:mobile_phone
attr_accessible:fax
attr_accessible:company_name
attr_accessible:work_title
attr_accessible:license_number
###############################################################
#attr_accessor can be used for values you don't want to store in the database directly and that will only exist for the life of the object (e.g. passwords).
attr_accessor :email, :password, :password_confirmation, :remember_me
###############################################################
cattr_accessor :time_out_time
def timeout_in
if time_out_time.nil?
STUDENT_LOG_OUT_PERIOD
else
time_out_time.seconds
end
end
end
路径文件中的学生模型：
devise_for :students, :controllers => { :registrations => "students/registrations" }
devise_for :students, :controllers => { :sessions => "students/sessions" }
EDIT2：
这是学生注册控制员：
class Students::RegistrationsController < Devise::RegistrationsController
def update
# no mass assignment for country_id, we do it manually
# check for existence of the country in case a malicious user manipulates the params (fails silently)
if student_signed_in? then
if params[resource_name][:country_id]
resource['country_id'] = params[resource_name][:country_id] if Country.find_by_id(params[resource_name][:country_id])
end
if params[resource_name][:state_province_id]
resource.state_province_id = params[resource_name][:state_province_id] if State.find_by_id(params[resource_name][:state_province_id])
end
end
super
end
def create
super
end
end
我有类似的问题。 在我的create方法中， build_resource没有使用给定的参数并且注册失败。 - >电子邮件不能是空白消息
问题是我正在使用Devise 3.0并且适用于我：
build_resource sign_up_params
设计<3.0没有sign_up_params很好
那么，build_resource方法如下所示：
def build_resource(hash=nil)
hash ||= params[resource_name] || {}
self.resource = resource_class.new_with_session(hash, session)
end
所以它看起来像是从一个空的散列返回一个资源，这反过来可能表明命名问题。 请张贴您的路线文件的相关部分和学生模型（ devise:和devise_for部分）。
如果我从我的学生模型中删除此行：
attr_accessor :email, :password, :password_confirmation, :remember_me
每件事情都很好！我不应该添加attr_accessor ，如果我添加它，设计将无法从发送的参数创建新的资源。