Question

我在登录后遇到此错误我的完整痕迹是

undefined method `[]' for nil:NilClass

Extracted source (around line #20):


 def create
  @session = Session.new(params[:session], request.remote_ip)
   if @session.valid?
    set_current_user(@session.current_user)
    add_to_current_cart params



Application Trace | Framework Trace | Full Trace
app/models/session.rb:12:in `initialize'
app/controllers/sessions_controller.rb:20:in `new'
app/controllers/sessions_controller.rb:20:in `create'
Request

Parameters:

{"utf8"=>"✓",
  "authenticity_token"=>==",
"email"=>{"{:placeholder=>\"email@address.com\",
:tabIndex=>\"1\",
\"class\"=>\"\"}"=>""},
"password"=>"[FILTERED]",
"commit"=>"Log In"}

我的会话控制器文件是

 def create
  @session = Session.new(params[:session], request.remote_ip)
   if @session.valid?
  set_current_user(@session.current_user)
  add_to_current_cart params
  add_to_favorites params

  if session[:return_to]
    redirect_to session[:return_to]
  else

Session.rb文件是

  class Session
 INCORRECT_PASSWORD = "The password you entered is incorrect.       Please try again (make sure your caps lock is off)."
 EMAIL_NOT_FOUND = "The email id you entered does not belong to any   account."
 MANDATORY_FIELDS = "You must fill in all of the fields"

include ActiveModel::Validations
attr_accessor :email, :password, :errors
attr_reader :current_user

 def initialize(params={}, ip_address=nil)
   @errors = ActiveModel::Errors.new(self)
   @email = params[:email]
   @password = params[:password]
   @current_user = User.find_by_email(@email)
   @ip_address = ip_address
end

 def valid?
mandatory_fields_presence
if @current_user && @errors.empty?
  if @current_user.waiting_for_confirmation?
    email_confirmation_link = "/account/#{@current_user.uuid}/send-confirmation-email"
    @errors.add(:base, "Please confirm your account first. <a href='#{email_confirmation_link}'>Resend confirmation link</a>")
  end
end
authenticate if @errors.empty?
@current_user.signed_in(@ip_address) if @errors.empty?
@errors.empty?

end

 private
  def mandatory_fields_presence
  @errors.add(:email, MANDATORY_FIELDS) if @email.blank? or        @password.blank?
  end

 def authenticate
   @errors.add(:email, EMAIL_NOT_FOUND) if @current_user.nil?
   if @errors.empty? && !@current_user.authenticated?(@password)
    @errors.add(:password, INCORRECT_PASSWORD)
 end
end

end
      if session[:login_page] == true
        redirect_to root_path
     else
        redirect_to :back
     end
    end
  else
    if session[:login_page] == true
      render :new
    else
      flash[:login_failed] = OpenStruct.new({ :errors =>  @session.errors, :login_failed => true })
      redirect_to :back
    end
  end
 end

使用ruby 1.9.3，rails 4.2.5 我点击登录按钮后无法登录，即使注册表格也出现了这种问题。帮我解决这个问题？

Answer 1

您发送的参数不正确，您将params值作为字符串，这是不正确的，

尝试将params作为键和值发送，

发送参数：

{

    "utf8"=>"✓",
  "authenticity_token"=>"b7t1yJ7cGyxDmecBpvBrGLRbh/ubtPjsUFdP/HosK8kp/ZLRtrV3dVWE2vPjDnThCbt9hk1ftm5ZMg9Ia1StWw==",
    "email"=>{"pavanez4u@gmail.com",
    "tabIndex"=>"1",
    "password"=>"[FILTERED]"
    "commit"=>"Log In"
}

@email = params[:email]此行会引发错误，因为params格式不正确。

未定义的方法`[]＆＃39;为nil：登录后为NilClass +

1 个答案: