如何在会话中存储 nil 用户的目标?

问题描述

如何在用户的会话中保存用户的目标?然后，一旦他注册，保存该目标并将其从会话中删除?

在主页上是这样的:

goals/_form.html.erb

点击提交后，nil 用户的目标应该被添加到他的会话中，然后他应该被重定向到注册页面，在那里注册他的目标应该被添加到他新创建的帐户中.>

goals_controller

 def 创建@goal = params[:user] ?current_user.goals.build(goal_params) : Goal.new(goal_params)如果参数[:session][:name][:deadline]session[:name][:deadline] = params[:session][:name][:deadline]重定向到 signup_url埃尔西夫@goal.savetrack_activity @goalredirect_to @goal，注意:'目标已成功创建'别的flash.now[:danger] = '必填字段:输入目标"'呈现新"结尾结尾

现在，如果我以 nil 用户的身份点击提交，我会得到:

GoalsController#create 中的 NoMethodErrornil:NilClass 的未定义方法`[]'对于行:if params[:session][:name][:deadline]

然后，一旦他注册了他的会话中存储的目标，就应该将其添加到他的帐户中.如果最后一个条件太复杂，我可以单独提出一个问题.

解决方案

目标控制器

 def 创建除非 params[:user].present?# 如果没有用户，则将目标值存储到会话中session[:goal_name] =goal_params[:name]session[:goal_deadline] =goal_params[:deadline]重定向到 signup_url别的@goal = current_user.goals.build(goal_params)如果@goal.savetrack_activity @goalredirect_to @goal，注意:'目标已成功创建'别的flash.now[:danger] = '必填字段:输入目标"'呈现新"结尾结尾

用户控制器

def 创建# 创建用户逻辑如果@user.save# 抓取会话变量的同时删除它gName = session.delete(:goal_name)gDeadline = session.delete(:goal_deadline)# 您可以使错误处理更复杂@user.goals.create(名称:gName，截止日期:gDeadline)重定向到成功创建路径别的...结尾结尾

How to save a user's goal in his session? Then once he signed up, save that goal and delete it from the session?

On the home page it looks like this:

goals/_form.html.erb

<%= simple_form_for(@goal) do |f| %>
  <%= f.text_field :name %>
  <%= f.text_field :deadline %>
  <%= f.submit %>
<% end %>

Upon clicking submit, the nil user's goal should be added to his session and then he should be redirected to the signup page whereupon signing up his goal should be added to his newly created account.

goals_controller

  def create
    @goal = params[:user] ? current_user.goals.build(goal_params) : Goal.new(goal_params)
    if params[:session][:name][:deadline] 
      session[:name][:deadline] = params[:session][:name][:deadline] 
      redirect_to signup_url 
    elsif 
      @goal.save
      track_activity @goal
      redirect_to @goal, notice: 'Goal was successfully created'
    else
      flash.now[:danger] = 'Required Field: "Enter Goal"'
      render 'new'
    end
  end

Right now if I click submit as a nil user I get:

NoMethodError in GoalsController#create
undefined method `[]' for nil:NilClass
for line: if params[:session][:name][:deadline]

Then once he signed up the goal stored in his session should be added to his account. If this last condition is too complex I can make it a separate question.

解决方案

Goals Controller

  def create
    unless params[:user].present?
        # If there is no user, store the goal values to the session
        session[:goal_name] = goal_params[:name]
        session[:goal_deadline] = goal_params[:deadline]
        redirect_to signup_url
    else
        @goal = current_user.goals.build(goal_params)
        if @goal.save
            track_activity @goal
            redirect_to @goal, notice: 'Goal was successfully created'
        else
            flash.now[:danger] = 'Required Field: "Enter Goal"'
            render 'new'
        end
    end

User Controller

def create
    # create user logic
    if @user.save
        # Grab the session variable at the same time deleting it
        gName = session.delete(:goal_name)
        gDeadline = session.delete(:goal_deadline)

        # You can make this more complex for error handling
        @user.goals.create(name: gName, deadline: gDeadline)
        redirect_to success_creation_path
    else
      ...
    end
end

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