Ruby on rails 未定义的局部变量或方法“user'；

我得到了这个错误：未定义的局部变量或#的“user”方法指向配置文件控制器第9行，“def更新方法后的第一行”，顺便说一句，我正在为我的用户使用designe

class ProfileController < ApplicationController
before_action :authenticate_user!

def index
  @user = current_user
end

def update
  current_user.update(user.params) 
  redirect_to root_path
end


private
  def user_params
  params.require(user).permit(:first_name, :last_name)
  end
end

以下是生成的模式设计：

ActiveRecord::Schema.define(version: 20160406005549) do

# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"

create_table "users", force: :cascade do |t|
 t.string   "email",                  default: "", null: false
 t.string   "encrypted_password",     default: "", null: false
 t.string   "reset_password_token"
 t.datetime "reset_password_sent_at"
 t.datetime "remember_created_at"
 t.integer  "sign_in_count",          default: 0,  null: false
 t.datetime "current_sign_in_at"
 t.datetime "last_sign_in_at"
 t.inet     "current_sign_in_ip"
 t.inet     "last_sign_in_ip"
 t.datetime "created_at",                          null: false
 t.datetime "updated_at",                          null: false
 t.string   "first_name"
 t.string   "last_name"
end

add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree
add_index "users", ["reset_password_token"], name:    "index_users_on_reset_password_token", unique: true, using: :btree

end

---

您的代码有一些地方出错。首先，您在控制器中调用一个未定义的变量

user

应为符号，user.params应为

user\u params

class ProfileController < ApplicationController
before_action :authenticate_user!

def index
  @user = current_user
end

def update
  current_user.update(user_params) 
  redirect_to root_path
end


private
  def user_params
  params.require(:user).permit(:first_name, :last_name)
  end
end

class ProfileController

您还需要更新路由以支持您描述的用户操作：

路由内。rb:

资源：用户

最后，要使用Desive helper方法，请确保在routes.rb的顶部也有Desive routes：

---

design\u:users

user.params

应该是

user\u-params

我花了大约10个小时的时间放松自己，直到凌晨3点左右才醒来。这总是最愚蠢的错误。谢谢

ActiveRecord::Schema.define(version: 20160406005549) do

# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"

create_table "users", force: :cascade do |t|
 t.string   "email",                  default: "", null: false
 t.string   "encrypted_password",     default: "", null: false
 t.string   "reset_password_token"
 t.datetime "reset_password_sent_at"
 t.datetime "remember_created_at"
 t.integer  "sign_in_count",          default: 0,  null: false
 t.datetime "current_sign_in_at"
 t.datetime "last_sign_in_at"
 t.inet     "current_sign_in_ip"
 t.inet     "last_sign_in_ip"
 t.datetime "created_at",                          null: false
 t.datetime "updated_at",                          null: false
 t.string   "first_name"
 t.string   "last_name"
end

add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree
add_index "users", ["reset_password_token"], name:    "index_users_on_reset_password_token", unique: true, using: :btree

end

class ProfileController < ApplicationController
before_action :authenticate_user!

def index
  @user = current_user
end

def update
  current_user.update(user_params) 
  redirect_to root_path
end


private
  def user_params
  params.require(:user).permit(:first_name, :last_name)
  end
end