在我的Web应用程序中,我有一个用于注册的宝石和2个Omniauth Gems(Google和Facebook(。情况如下:如果用户不提供与Facebook注册的电子邮件,则该应用程序会引起例外:Validation failed: Email can't be blank
。这就是我的from_omniauth
方法在用户模型中的样子:
def self.from_omniauth(auth, sign_in_resource = nil)
# Get the identity and usesr if they exist
identity = Identity.find_from_oauth(auth)
# If a signed_in_resosurce is provided it always overrides the existing user
# to prvent the identity being locked with accidentally created accounts.
user = sign_in_resource ? sign_in_resource : identity.user
# Create the user if needed
if user.nil?
# Get the exsiting user by email *Assuming that they provide valid_email address.
user = User.where(email: auth.info.email ).first
# Create the user if its a new registeration
if user.nil?
user = User.new email: auth.info.email, password: Devise.friendly_token[0,20]
#Disable confirmation so we don't need to send confirmation email
# user.skip_confirmation!
user.save!
end
end
# Associate the identity with the user if needed
if identity.user != user
identity.user = user
identity.save!
end
# Get the basic information and create Profile, Address model
unless user.profile.present?
first_name = auth.info.first_name.present? ? auth.info.first_name : auth.info.name.split(' ')[0]
last_name = auth.info.last_name.present? ? auth.info.last_name : auth.info.name.split(' ')[1]
profile = Profile.new(user_id: user.id,
first_name: first_name,
last_name: last_name,
gender: auth.extra.raw_info.gender)
profile.save(validate: false)
address = Address.new(addressable_id: profile.id, addressable_type: 'Profile')
address.save(validate: false)
end
user.reload
end
在user.save!
上增加了例外,是否可以将用户重定向到其他页面,或者只是显示闪存消息?我知道,诸如重定向和其他内容之类的业务逻辑必须在控制器中执行。因此,也许有一种方法可以将我写的方法移动到控制器上?谢谢。
使用 rescue_from
在您的控制器中的类方法。
class YourController < ApplicationController
rescue_from ::ActiveRecord::RecordInvalid, with: :validation_failed
...
def validation_failed(exception)
flash[:error] = exception.message
redirect_to request.referer || root_path
end
end