问题：我正在尝试创建一个自定义操作，允许教师通过＆＃34;批准＆＃34;批准学生。行动。批准操作将获取相应的行并从＆＃34; pending＆＃34;更改状态。到＆＃34;活跃＆＃34;并保存记录。目前，当我点击链接时，更好的错误会给我一个
＆＃34;未定义方法`permit＆＃39; for＆＃34; 2＆＃34;：String＆＃34;
它提到了一些关于
的事情设计:: ParameterSanitizer＃许可证
请记住，我对Devise很新，我很难过！
控制器
class Teachers::RegistrationsController < Devise::RegistrationsController
# APPROVE
def approve
@ts = TeacherStudent.find_by(teacher_id: params[:teacher], student_id: params[:student])
@ts.status = "active"
@ts.save
redirect_to teachers_path
end
end
查看
= link_to "Approve", approve_path(teacher: s.teacher_id, student: s.student_id), method: :put
的routes.rb
put 'teachers' => 'teachers#approve', as: :approve
错误
Started PUT "/teachers?student=14&teacher=2" for ::1 at 2015-06-21 01:06:33 -0500
Processing by Teachers::RegistrationsController#update as HTML
Parameters: {"authenticity_token"=>"VQ2zVIv5gof1+38xdAA9d/Y+bWmHk4bT1SXHvc+xLr3+qTOm2xSMZUFjDw74umk35P36kgpqx4eMftFGyVThSg==", "student"=>"14", "teacher"=>"2"}
[1m[36mTeacher Load (0.6ms)[0m [1mSELECT "teachers".* FROM "teachers" WHERE "teachers"."id" = $1 ORDER BY "teachers"."id" ASC LIMIT 1[0m [["id", 2]]
[1m[35mTeacher Load (0.3ms)[0m SELECT "teachers".* FROM "teachers" WHERE "teachers"."id" = $1 LIMIT 1 [["id", 2]]
Completed 500 Internal Server Error in 5ms (ActiveRecord: 1.0ms)
NoMethodError - undefined method `permit' for "2":String:
() Users/dannysun/.rvm/gems/ruby-2.2.1/bundler/gems/devise-15b99977a2a3/lib/devise/parameter_sanitizer.rb:66:in `permit'
() Users/dannysun/.rvm/gems/ruby-2.2.1/bundler/gems/devise-15b99977a2a3/lib/devise/parameter_sanitizer.rb:58:in `account_update'
() Users/dannysun/.rvm/gems/ruby-2.2.1/bundler/gems/devise-15b99977a2a3/lib/devise/parameter_sanitizer.rb:77:in `default_sanitize'
() Users/dannysun/.rvm/gems/ruby-2.2.1/bundler/gems/devise-15b99977a2a3/lib/devise/parameter_sanitizer.rb:24:in `sanitize'
() Users/dannysun/.rvm/gems/ruby-2.2.1/bundler/gems/devise-15b99977a2a3/app/controllers/devise/registrations_controller.rb:141:in `account_update_params'
() Users/dannysun/.rvm/gems/ruby-2.2.1/bundler/gems/devise-15b99977a2a3/app/controllers/devise/registrations_controller.rb:48:in `update'
actionpack (4.2.1) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
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答案 0 :(得分：0)
问题很可能出在您的权限中。
您使用的是强参数吗？如果是这样，您需要允许那里的字段。
示例：
def teacher_params
params.require(:teacher).permit(:email, :current_password, :password, :password_confirmation)
end
答案 1 :(得分：0)
在教师控制器底部添加以下代码 -
private
def user_params
accessible = [:email, _____] # extend with your own params
accessible << [ :password, :password_confirmation ] unless params[:teacher][:password].blank?
params.require(:teacher).permit(accessible)
end