form_for 用 :slug 代替 :id

Question

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

给出 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

如何获取 users/jemelle/tasks？

Answer 1

我认为您需要覆盖模型的 to_param 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"

form_for 用 :slug 代替 :id

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