如何在会话中保存用户的目标？然后,一旦他注册,保存该目标并从会话中删除它？
在主页上它看起来像这样：
目标/ _form.html.erb
<%= simple_form_for(@goal) do |f| %> <%= f.text_field :name %> <%= f.text_field :deadline %> <%= f.submit %> <% end %>
单击提交后,应将nil用户的目标添加到他的会话中,然后将其重定向到注册页面,然后将其注册目标添加到他新创建的帐户中.
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
现在如果我点击提交作为零用户我得到：
NoMethodError in GoalsController#create undefined method `[]' for nil:NilClass for line: if params[:session][:name][:deadline]
然后,一旦他注册了存储在他的会话中的目标应该被添加到他的帐户.如果这最后一个条件过于复杂,我可以将它作为一个单独的问题.
解决方法
目标控制器
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
用户控制器
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