ruby-on-rails - form_for 与 :slug instead of :id

Question

<%= form_for [current_user, @task] do |f| %>

给 users/:id/tasks但我需要 users/:slug/tasks因为我正在使用:

resources :users, param: :slug do
  resources :tasks, only: [:index, :new, :create]
end

但如果我使用:

<%= form_for [current_user.slug, @task] do |f| %>

我得到: NoMethodError: undefined method 'jemelle_visits_path' for如何获得 users/jemelle/tasks反而？

Answer 1

我认为您需要覆盖 to_param你的模型的方法:
https://apidock.com/rails/ActiveRecord/Base/to_param

user = User.find_by_name('Phusion')
user_path(user)  # => "/users/1"

You can override to_param in your model to make user_path construct a path using the user’s name instead of the user’s id:

class User < ActiveRecord::Base
  def to_param  # overridden
    name
  end
end

user = User.find_by_name('Phusion')
user_path(user)  # => "/users/Phusion"