Rails + Graphql和身份验证的混淆

时间:2018-10-21 02:17:47

标签: ruby-on-rails authentication graphql

关于使用GraphQL设置current_user有点困惑。因此,我在Restful应用程序中完成此操作的方式将是让用户控制器像这样创建时登录用户

  def create
    @user = User.new(user_params)

    if @user.save
      login(@user)
      render :show
    else
      render json: @user.errors.messages, status: 422
    end
  end

我在应用程序控制器中有login(user)方法,它的作用基本上是将用户设置为current_user helper_method,并像这样分配会话令牌

  protect_from_forgery with: :exception

  helper_method :current_user

  def login(user)
    @current_user = user
    session[:session_token] = user.reset_session_token!
  end

  def logout
    current_user.reset_session_token!
    session[:session_token] = nil
  end

  def logged_in?
    !!current_user
  end

  def current_user
    @current_user ||= User.find_by(session_token: session[:session_token])
  end

我猜我真正的问题是我应该如何在GraphQL控制器上下文中使用current_user?我使用的是“ graphql” gem,它为我创建了一个graphQL控制器,但仍然对如何实现它感到困惑。创建新用户时,其输出为

[["username", "elyy"], ["email", "kelly@kelly.com"], ["password_digest", "$2a$10$ATfHgklNx0bED7N9JCQfHuHjNF/sJ5AcwkOzMOqX7sPLdgAREcHd6"], ["created_at", "2018-10-21 01:46:06.913393"], ["updated_at", "2018-10-21 01:46:06.913393"], ["session_token","uOqgAxb5sOLm2AQMExLwaQ"]]

有关我如何进行项目设置的更多信息,我将在底部包括用户模型,用于创建用户的变体和GraphQL控制器。如果您需要任何其他信息,请随时询问。谢谢所有能帮助我解释该问题的人,并通过GraphQL对我进行进一步的教育,因为我在阅读文档和一些示例时感到困惑。

用户模型

class User < ApplicationRecord
  has_secure_password

  validates :username, :email, :password_digest, presence: true, on: :create
  validates :username, uniqueness: true
  validates :password, length: { minimum: 6, allow_nil: true }
  validates_format_of :email, :with => /@/

  attr_reader :password

  after_initialize :ensure_session_token

  def self.find_by_credentials(email, password)
    user = User.find_by(email: email)
    user && user.is_password?(password) ? user : nil
  end

  def self.generate_session_token
    SecureRandom.urlsafe_base64
  end

  def password=(password)
    @password = password
    self.password_digest = BCrypt::Password.create(password)
  end

  def is_password?(password)
    BCrypt::Password.new(self.password_digest).is_password?(password)
  end

  def reset_session_token!
    self.session_token = User.generate_session_token
    self.save!
    self.session_token
  end

  def ensure_session_token
    self.session_token ||= User.generate_session_token
  end
end

创建用户突变

class Resolvers::CreateUser < GraphQL::Function
  argument :email, !types.String
  argument :password, !types.String
  argument :username, !types.String

  type Types::UserType

  def call(_obj, args, _ctx)
    User.create!(
      email: args[:email],
      password: args[:password],
      username: args[:username]
    )
  end
end

GraphQL控制器

class GraphqlController < ApplicationController
  def execute
    variables = ensure_hash(params[:variables])
    query = params[:query]
    operation_name = params[:operationName]
    context = {
      # Query context goes here, for example:
      current_user: current_user,
    }
    result = PrivateBookSchema.execute(query, variables: variables, context: context, operation_name: operation_name)
    render json: result
  rescue => e
    raise e unless Rails.env.development?
    handle_error_in_development e
  end

  private

  # Handle form data, JSON body, or a blank value
  def ensure_hash(ambiguous_param)
    case ambiguous_param
    when String
      if ambiguous_param.present?
        ensure_hash(JSON.parse(ambiguous_param))
      else
        {}
      end
    when Hash, ActionController::Parameters
      ambiguous_param
    when nil
      {}
    else
      raise ArgumentError, "Unexpected parameter: #{ambiguous_param}"
    end
  end

  def handle_error_in_development(e)
    logger.error e.message
    logger.error e.backtrace.join("\n")

    render json: { error: { message: e.message, backtrace: e.backtrace }, data: {} }, status: 500
  end
end

0 个答案:

没有答案