输入的电子邮件覆盖SecureRandom电子邮件？

方法＃1

Send email reminder to  # :email belongs to the users table 

方法＃2

 Send email reminder to  # :default_email belongs to the challenges table. The point of this is to try something in the create process like current_user.email == @challenge.default_email 

然后将用户重定向到signup url

如果用户通过Facebook注册，则会生成随机电子邮件，以便他可以完成validation过程： user.email = SecureRandom.hex + "@mailinator.com"

user.rb

  def self.from_omniauth(auth) # Sets 60 day auth token oauth = Koala::Facebook::OAuth.new("125402372971231236229929", "ee917abf2e8f1c98274cdafssadffddffaebb1346f4") new_access_info = oauth.exchange_access_token_info auth.credentials.token new_access_token = new_access_info["access_token"] new_access_expires_at = DateTime.now + new_access_info["expires"].to_i.seconds where(provider: auth.provider, uid: auth.uid).first_or_initialize.tap do |user| user.provider = auth.provider user.image = auth.info.image user.uid = auth.uid user.name = auth.info.name user.oauth_token = new_access_token # auth.credentials.token <- your old token. Not needed anymore. user.oauth_expires_at = Time.at(auth.credentials.expires_at) user.password = (0...8).map { (65 + rand(26)).chr }.join user.email = SecureRandom.hex + "@mailinator.com" unless user.email.present? user.activated = true user.save! end end 

但是，我们怎样才能使用户在challenge / create.html.erb表格中输入的电子邮件覆盖SecureRandom电子邮件？

users_controller

  def create @user = User.new(user_params) if @user.save action = session.delete(:challenge_action) deadline = session.delete(:challenge_deadline) committed = session.delete(:challenge_committed) date_started = session.delete(:challenge_date_started) order = session.delete(:challenge_order) days_challenged = session.delete(:challenge_days_challenged) why = session.delete(:challenge_why) conceal = session.delete(:challenge_conceal) @user.challenges.create(action: action, deadline: deadline, why: why, conceal: conceal, date_started: date_started, committed: committed, days_challenged: days_challenged) end redirect_to root_url else render 'new' end end 

challenges_controller

  before_action :update_user_email, if: proc {|c| c.current_user.present? && c.params[:email].present? } def create @challenge = Challenge.new(challenge_params) if params[:step] == '2' if current_user == nil # If there is no user, store values to the session. session[:challenge_action] = challenge_params[:action] session[:challenge_committed] = challenge_params[:committed] session[:challenge_deadline] = [params["challenge"]["deadline(3i)"], params["challenge"]["deadline(2i)"], params["challenge"]["deadline(1i)"]].join('/') session[:challenge_date_started] = [params["challenge"]["date_started(3i)"], params["challenge"]["date_started(2i)"], params["challenge"]["date_started(1i)"]].join('/') session[:challenge_order] = challenge_params[:order] session[:challenge_days_challenged] = challenge_params[:days_challenged] session[:challenge_why] = challenge_params[:why] session[:challenge_conceal] = challenge_params[:conceal] redirect_to signup_path else @challenge = current_user.challenges.build(challenge_params) @challenge.save redirect_to root_path end else respond_modal_with @challenge end end private def update_user_email email = params[:email] current_user.update_attribute(:email, email) end 

sessions_controller

 class SessionsController < ApplicationController def new end def facebook user = User.from_omniauth(env["omniauth.auth"]) user.remember cookies.permanent.signed[:user_id] = user.id cookies.permanent[:remember_token] = user.remember_token redirect_to root_url end def create assign_email(cookies[:challenges_email]) user = User.find_by(email: params[:session][:email].downcase) assign_email(cookies[:challenges_email]) if user && user.authenticate(params[:session][:password]) assign_email(cookies[:challenges_email]) log_in user params[:session][:remember_me] == 'nil' ? forget(user) : remember(user) redirect_to root_url else flash.now[:info] = 'Invalid email/password combination' render 'new' end end def destroy log_out if logged_in? redirect_to root_url end end 

Answer 1

我们谈到在另一个问题中将其设置为cookie。 如果你采用这种方法，你可以将cookie传递给方法。 类似于这个问题中讨论的内容：

  before_create :set_user_email def assign_email(email) @email = email end def set_user_email self.email = @email end 

然后在您可以访问cookie的控制器操作中：

  assign_email(cookies[:challenge_email]) 

Answer 2

@joseph回答的很简单，但我认为你可以通过在控制器中设置电子邮件来获取电子邮件; User.new(:email => "email you want to show in the field")无需传递nil用户对象传递新对象。

在视图文件中，它将显示在电子邮件字段中

 Send email reminder to <%= f.email_field :email, class: "send-email", placeholder: "Enter Email" %>