当我尝试编辑用户时，出现错误：
ActionController：:P arameterMissing in UsersController#update 参数缺失或值为空：用户
突出显示参数.require行：
def user_params
params.require(:user).permit(:name, :email, :role, :university_id, :password, :password_confirmation)
end
我已经查看了类似的解决方案问题，但似乎无法使其起作用。对菜鸟的任何帮助将不胜感激！
以下是请求参数：
{"utf8"=>"✓",
"_method"=>"patch",
"authenticity_token"=>"PfLU2rMWnEMj4Nez+tNhsZz9v9z2jGmCTUXOOElmv9NMK6j8LTzvSuJGL9iH/cx02vb7Po3tSQIKmMXNPVhULg==",
"staff"=>{"name"=>"fake alogo", "email"=>"fake@alogo.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"},
"commit"=>"Save changes",
"id"=>"103"}
这是我用来编辑用户的表单：
<%= form_for(@user) do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<%= f.label :name %>
<%= f.text_field :name, class: 'form-control' %>
<%= f.label :email %>
<%= f.email_field :email, class: 'form-control' %>
<%= f.label :password %>
<%= f.password_field :password, class: 'form-control' %>
<%= f.label :password_confirmation, "Confirmation" %>
<%= f.password_field :password_confirmation, class: 'form-control' %>
<%= f.submit "Save changes", class: "btn btn-primary" %>
<% end %>
这是用户控制器：
class UsersController < ApplicationController
before_action :logged_in_user, only: [:show, :index, :edit, :update, :destroy]
before_action :correct_user, only: [:edit, :update]
def index
@users = User.paginate(page: params[:page])
end
def show
@user = User.find(params[:id])
@referral_requests = @user.referral_requests.paginate(page: params[:page])
end
def new
@user = User.new
end
def create
@user = User.new(user_params)
if @user.save
@user.send_activation_email
flash[:info] = "Please check your email to activate your account."
redirect_to root_url
else
render 'new'
end
end
def edit
end
def update
if @user.update_attributes(user_params)
flash[:success] = "Profile updated"
redirect_to @user
else
render 'edit'
end
end
def destroy
User.find(params[:id]).destroy
flash[:success] = "User deleted"
redirect_to users_url
end
private
def user_params
params.require(:user).permit(:name, :email, :role, :university_id, :password, :password_confirmation)
end
# Before filters
# Confirms the correct user.
def correct_user
@user = User.find(params[:id])
redirect_to(root_url) unless current_user?(@user)
end
end
用户型号：
class User < ApplicationRecord
self.inheritance_column = :role
enum role: { Staff: 0, Clinician: 1, Admin: 2 }
belongs_to :university
has_many :referral_requests
attr_accessor :remember_token, :activation_token, :reset_token
before_save :downcase_email
before_create :create_activation_digest
validates :name, presence: true, length: { maximum: 50 }
VALID_EMAIL_REGEX = /A[w+-.]+@[a-zd-]+(.[a-zd-]+)*.[a-z]+z/i
validates :email, presence: true, length: { maximum: 255 },
format: { with: VALID_EMAIL_REGEX },
uniqueness: { case_sensitive: false }
validates :role, presence: true
has_secure_password
validates :password, presence: true, length: { minimum: 6 }, allow_nil: true
# Returns the hash digest of the given string.
def User.digest(string)
cost = ActiveModel::SecurePassword.min_cost ? BCrypt::Engine::MIN_COST :
BCrypt::Engine.cost
BCrypt::Password.create(string, cost: cost)
end
# Returns a random token.
def User.new_token
SecureRandom.urlsafe_base64
end
# Remembers a user in the database for use in persistent sessions.
def remember
self.remember_token = User.new_token
update_attribute(:remember_digest, User.digest(remember_token))
end
# Returns true if the given token matches the digest.
def authenticated?(remember_token)
return false if remember_digest.nil?
BCrypt::Password.new(remember_digest).is_password?(remember_token)
end
# Forgets a user.
def forget
update_attribute(:remember_digest, nil)
end
# Returns true if the given token matches the digest.
def authenticated?(attribute, token)
digest = send("#{attribute}_digest")
return false if digest.nil?
BCrypt::Password.new(digest).is_password?(token)
end
# Activates an account.
def activate
update_attribute(:activated, true)
update_attribute(:activated_at, Time.zone.now)
end
# Sends activation email.
def send_activation_email
UserMailer.account_activation(self).deliver_now
end
# Sets the password reset attributes.
def create_reset_digest
self.reset_token = User.new_token
update_attribute(:reset_digest, User.digest(reset_token))
update_attribute(:reset_sent_at, Time.zone.now)
end
# Sends password reset email.
def send_password_reset_email
UserMailer.password_reset(self).deliver_now
end
# Returns true if a password reset has expired.
def password_reset_expired?
reset_sent_at < 2.hours.ago
end
def feed
ReferralRequest.where("user_id = ?", id)
end
private
# Converts email to all lower-case.
def downcase_email
self.email = email.downcase
end
# Creates and assigns the activation token and digest.
def create_activation_digest
self.activation_token = User.new_token
self.activation_digest = User.digest(activation_token)
end
end
class Staff < User
validates :university_id, presence: true
end
class Clinician < User
has_many :lists
has_many :universities, through: :lists
end
根据您提供的示例，请求参数包含staff：
"staff"=>{"name"=>"fake alogo", ...
但不包含定义的强参数要求user：
def user_params
params.require(:user).permit(:name, :email, :role, :university_id, :password, :password_confirmation)
end
这是因为form_for方法中的@user是Staff类的实例。默认情况下，form_for参数命名为staff.
幸运的是，form_foras选项可以配置它：
<%= form_for(@user, as: :user) do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<%= f.label :name %>
<%= f.text_field :name, class: 'form-control' %>
<%= f.label :email %>
<%= f.email_field :email, class: 'form-control' %>
<%= f.label :password %>
<%= f.password_field :password, class: 'form-control' %>
<%= f.label :password_confirmation, "Confirmation" %>
<%= f.password_field :password_confirmation, class: 'form-control' %>
<%= f.submit "Save changes", class: "btn btn-primary" %>
<% end %>
它应该将参数发送为"user" => {"name" => ...}