Ruby on Rails：将JSON显示从一个控制器渲染到另一个控制器

Question

我有用于后端的Ruby on Rails 5.2 API和用于前端的Angular 6。用户从另一个网站登录到该网站。我有subscription_controller，它从第一个网站获取数据，还有user_controller，它具有要使用的前端用户的所有详细信息。 我想使用相关ID从subscription_controller调用user_controller的show def。

subscription_controller

ggplot(summarized) +
  geom_raster(aes(x = x_grid, y = y_grid, fill = z_brk)) +
  geom_label(aes(x = min_x, y = y_grid, label = brk_num), data = labels, size = 3, hjust = 0.5) +
  theme_void() +
  theme(legend.position = "none", panel.background = element_rect(fill = "gray40")) +
  coord_fixed() +
  scale_fill_brewer(palette = "PuBu")

user_controller

class SubscriptionsController < ApiController
  def login
    name = params["name"]
    email = params["email"]
    organization_name = params["organization"]
    current_user = User.find_by(email: email)
    if current_user
      ##### render show JSON of user_controller for current_user #####
      puts "redirect to frontend"
    else
      current_user = User.create(name: name, email: email)
      subscription_id = find_the_right_subscription(email, organization_name)
      current_user.subscription_id = subscription_id
      current_user.save
      ##### render show JSON of user_controller for current_use #####
      puts "redirect to frontend"
    end
  end

  def find_the_right_subscription(email, organization_name)
    email_domain = email.split("@").last
    found_subscriptions = Subscription.where("organization like ? or domain like ?","%#{organization_name}%","%#{email_domain}%")
    if found_subscriptions.empty?
      subscription = Subscription.find_by(name: 'Default Subscription')
    else
      subscription = found_subscriptions.first
    end
    return subscription.id
  end
end