我遇到了一个以前已经回答过的错误，但没有一个答案对我有效，我完全被难住了。
我正在使用这个装置，但它不可注册。
当我尝试创建一个新用户时，我收到一个错误"电子邮件不能为空，密码不能为空"。从日志中可以看出，它们绝对不是空白的。参数哈希工作正常。交易会立即回滚。在控制台中创建新用户时，我不会遇到这个问题。
它在编辑现有用户时运行良好。
解决了强参数问题设计抛出。
提前谢谢，我很感激你的帮助！
下面是我的代码。
日志：
Started POST "/users" for 127.0.0.1 at 2014-10-29 10:37:33 +0000
Processing by UsersController#create as HTML
Parameters: {"utf8"=>"V", "authenticity_token"=>"8U+XxLIrE7MjOphsuorOwarggyZsj
3qTNQeap273QTo=", "user"=>{"name"=>"John Smith", "role"=>"MG", "client"=>""
, "email"=>"john@johnsmith.com", "password"=>"[FILTERED]", "passw
ord_confirmation"=>"[FILTERED]"}, "commit"=>"Sign up"}
(0.0ms) begin transaction
(1.0ms) rollback transaction
Rendered users/new.html.erb within layouts/application (6.0ms)
User Load (0.0ms) SELECT "users".* FROM "users" WHERE "users"."id" = 1 ORD
ER BY "users"."id" ASC LIMIT 1
Rendered layouts/_header.html.erb (4.1ms)
#<ActiveModel::Errors:0x422fc88 @base=#<User id: nil, email: "", encrypted_passw
ord: "", reset_password_token: nil, reset_password_sent_at: nil, remember_create
d_at: nil, sign_in_count: 0, current_sign_in_at: nil, last_sign_in_at: nil, curr
ent_sign_in_ip: nil, last_sign_in_ip: nil, created_at: nil, updated_at: nil, nam
e: nil, client: nil, role: nil>, @messages={:email=>["can't be blank"], :passwor
d=>["can't be blank"], :name=>[], :role=>[], :client=>[], :password_confirmation
=>[]}>
Completed 422 Unprocessable Entity in 238ms (Views: 231.3ms | ActiveRecord: 1.0m
s)
应用控制器：
class ApplicationController < ActionController::Base
# Prevent CSRF attacks by raising an exception.
# For APIs, you may want to use :null_session instead.
protect_from_forgery with: :exception
before_filter :configure_permitted_parameters, if: :devise_controller?
def after_sign_in_path_for(user)
projects_path
end
protected
def configure_permitted_parameters
devise_parameter_sanitizer.for(:account_update) << :name
devise_parameter_sanitizer.for(:account_update) << :client
devise_parameter_sanitizer.for(:sign_up) << [:name, :role, :client]
end
end
新用户表单：
<%= form_for(@user) do |f| %>
<% if @user.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@user.errors.count, "error") %> stopped this user from being created:</h2>
<ul>
<% @user.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div><%= f.label :name %><br />
<%= f.text_field :name %></div>
<div><%= f.label :role %><br />
<%= select :user, :role, options_for_select(@role) %></div>
<div id="client_input"><%= f.label :client %><br />
<%= f.text_field :client %></div>
<div><%= f.label :email %><br />
<%= f.email_field :email %></div>
<div><%= f.label :password %> <% if @validatable %><i>(<%= @minimum_password_length %> characters minimum)</i><% end %><br />
<%= f.password_field :password, autocomplete: "off" %></div>
<div><%= f.label :password_confirmation %><br />
<%= f.password_field :password_confirmation, autocomplete: "off" %></div>
<div><%= f.submit "Sign up" %></div>
<% end %>
用户控制器：
class UsersController < ApplicationController
before_filter :get_user, :only => [:index,:new,:edit]
before_filter :client_restriction, only: [:index, :show, :new]
def index
@users = User.all
respond_to do |format|
format.json { render :json => @users }
format.xml { render :xml => @users }
format.html
end
end
def new
@user = User.new
@role = ["MG", "Client"]
end
def show
@user = User.all
@projects = Project.all
end
def edit
@user = User.find(params[:id])
@role = ["MG", "Client"]
end
def update
@user = User.find(params[:id])
@role = ["MG", "Client"]
@user.client == :client
@user.role == :role
if params[:user][:password].blank?
[:password, :password_confirmation, :current_password].collect{|p| params[:user].delete(p)}
else
@user.errors[:base] << "The password you entered is incorrect." unless @user.valid_password?(params[:user][:current_password])
end
respond_to do |format|
if @user.update(user_params)
sign_in(@user, :bypass => true) # To counter weird Devise error which logs users out after password change
format.html { redirect_to projects_path, notice: 'Your account details were updated successfully' }
else
format.html { render :edit }
end
end
end
def destroy
@user = User.find(params[:id])
@user.destroy
respond_to do |format|
format.html { redirect_to root_path, notice: "Your account has been deleted. Sorry to see you go!" }
end
end
def create
@role = ["MG", "Client"]
@user = User.new
if @user.save
respond_to do |format|
format.html { redirect_to :back, notice: "New user successfully created" }
end
else
respond_to do |format|
format.json { render :text => "Could not create user", :status => :unprocessable_entity } # placeholder
format.xml { head :ok }
format.html { render :action => :new, :status => :unprocessable_entity }
end
end
Rails.logger.info(@user.errors.inspect)
end
def add_user
end
private
def get_user
@current_user = current_user
end
def client_restriction
redirect_to root_path, notice: "You are not authorised to create users" if current_user.role != "MG"
end
def user_params
params.require(:user).permit(:role, :name, :client, :email, :password, :password_confirmation, :authenticity_token, project: [:name, :client, :phase], section: [:title, :position, :project_id], deliverable: [:file, :preview, :title, :project_id, :section_id], link: [:hyperlink, :title, :project_id, :section_id], embed: [:section_id, :embed_link, :title, :project_id])
end
end
用户型号：
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, #:registerable,
:recoverable, :rememberable, :trackable, :validatable
has_many :members
has_and_belongs_to_many :projects
has_many :sections
has_many :deliverables
has_many :embeds
has_many :links
accepts_nested_attributes_for :projects
end
您正试图创建一个空白的User。尝试：
def create
# ...
@user = User.new user_params
# ...
end
试试这个，我希望它能为你工作
def configure_permitted_parameters
devise_parameter_sanitizer.for(:account_update) << :name
devise_parameter_sanitizer.for(:account_update) << :client
devise_parameter_sanitizer.for(:sign_up) { |u| u.permit(:email, :password,:password_confirmation, :name, :role, :client) }
end