我正在做一场噩梦，试图将用户数据播种到我的rails项目中。我正在使用Nitrous.io，我可以通过在控制台中键入以下内容来设置新用户
rails console
然后在控制台中执行以下
2.1.1 :001 > u = User.new
=> #<User id: nil, username: nil, email: nil, password_hash: nil, password_salt: nil, admin: nil, points: nil, leagues: nil>
2.1.1 :002 > u.username = 'testadmin'
=> "testadmin"
2.1.1 :003 > u.email = 'testAdmin@test.com'
=> "testAdmin@test.com"
2.1.1 :004 > u.password = 'test'
=> "test"
2.1.1 :005 > u.password_confirmation = 'test'
=> "test"
2.1.1 :006 > u.admin = true
=> true
2.1.1 :007 > u.save
(86.8ms) BEGIN
User Exists (87.5ms) SELECT 1 AS one FROM "users" WHERE "users"."email" = 'testAdmin@test.com' LIMIT 1
User Exists (86.6ms) SELECT 1 AS one FROM "users" WHERE "users"."username" = 'testadmin' LIMIT 1
SQL (91.7ms) INSERT INTO "users" ("admin", "email", "password_hash", "password_salt", "username") VALUES ($1, $2, $3, $4, $5) RETURNING "id" [["admin", "t"], ["email", "testAdmin @test.com"], ["password_hash", "$2a$10$tVMzM58wjt.lDG6dlsoLQe4obwYzLf3UfUc2ui6MD2eTGAgwTTaQK"], ["password_salt", "$2a$10$tVMzM58wjt.lDG6dlsoLQe"], ["username", "testadmin"]]
(89.3ms) COMMIT
=> true
2.1.1 :008 > Exit
然后我转到项目中的seeds.rb文件，并输入以下
User.create ({username: 'testadmin2', email: 'testAdmin2@test.com', password: 'test', password_confirmation: 'test', admin: true})
然后我在控制台中运行rake-db:seed，但得到以下错误：
rake aborted!
ArgumentError: wrong number of arguments (2 for 0..1)
/home/action/workspace/PAW/app/models/user.rb:39:in `initialize'
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active_record/inheritance.rb:30:in `new'
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active_record/inheritance.rb:30:in `new'
/home/action/.rvm/gems/ruby-2.1.1/gems/protected_attributes-1.0.7/lib/active_record/mass_assignment_security/persistence.rb:45:in `create'
/home/action/workspace/PAW/db/seeds.rb:8:in `<top (required)>'
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:241:in `load'
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:241:in `block in load'
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:232:in `load_dependency'
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:241:in `load'
/home/action/.rvm/gems/ruby-2.1.1/gems/railties-4.1.0/lib/rails/engine.rb:543:in `load_seed'
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active_record/tasks/database_tasks.rb:184:in `load_seed'
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active_record/railties/databases.rake:173:in `block (2 levels) in <top (required)>'
Tasks: TOP => db:seed
(See full trace by running task with --trace)
我是新手，所以我可能在做一些愚蠢的事情，但我已经做了两个小时了，我根本想不出来。我之所以想这样植入数据，是因为我想设置一些可以访问某些页面的管理员(所有这些都可以正常工作(。要做到这一点，我需要设置admin=true。如果我通过网站设置新用户，我无法将用户设置为管理员。我可以按照上面的说明通过控制台完成，但这需要很长时间。播种会更快，我也想知道我做错了什么。我会在下面给你一些其他代码。感谢您寻找(并希望帮助(
user.rb
class User < ActiveRecord::Base
attr_accessible :email, :username, :password, :password_confirmation
attr_accessor :password
before_save :encrypt_password
validates_confirmation_of :password
validates_presence_of :password, :on => :create
validates_presence_of :email, :on => :create
validates_presence_of :username, :on => :create
validates_uniqueness_of :email
validates_uniqueness_of :username
def self.authenticate_by_email(email, password)
user = find_by_email(email)
if user && user.password_hash == BCrypt::Engine.hash_secret(password, user.password_salt)
user
else
nil
end
end
def self.authenticate_by_username(username, password)
user = find_by_username(username)
if user && user.password_hash == BCrypt::Engine.hash_secret(password, user.password_salt)
user
else
nil
end
end
def encrypt_password
if password.present?
self.password_salt = BCrypt::Engine.generate_salt
self.password_hash = BCrypt::Engine.hash_secret(password, password_salt)
end
end
def initialize(attributes = {})
super # must allow the active record to initialize!
attributes.each do |name, value|
send("#{name}=", value)
end
end
end
authentication_controller.rb
class AuthenticationController < ApplicationController
def sign_in
@user = User.new
end
def login
username_or_email = params[:user][:username]
password = params[:user][:password]
if username_or_email.rindex('@')
email=username_or_email
user = User.authenticate_by_email(email, password)
else
username=username_or_email
user = User.authenticate_by_username(username, password)
end
if user
session[:user_id] = user.id
flash[:notice] = 'Welcome'
redirect_to :root
else
flash.now[:error] = 'Unknown user. Please check your username and password.'
# Assign user to instance variable for the `sign_in` view!
@user = User.new(params[:user])
render :action => "sign_in"
end
end
def signed_out
session[:user_id] = nil
flash[:notice] = "You have been signed out."
end
def new_user
@user = User.new
end
def register
@user = User.new(params[:user])
if @user.valid?
@user.save
session[:user_id] = @user.id
flash[:notice] = 'Welcome.'
redirect_to :root
else
render :action => "new_user"
end
end
end
问题现已回答。请参见下文。
-
不要在型号(
User.rb(中执行此操作def initialize(attributes = {}) super # must allow the active record to initialize! attributes.each do |name, value| send("#{name}=", value) end end这不是必需的。
Rails自动创建getter和setter方法。 -
并且，在使用
create创建记录时，不需要使用{}包装参数。