为什么必须用Friendly_id显式指定范围?

发布于 2024-08-12 11:50:52 字数 1351 浏览 8 评论 0原文

我正在使用Friendly_id gem。我还嵌套了我的路由:

# config/routes.rb
map.resources :users do |user|
  user.resources :events
end

所以我有像 /users/nfm/events/birthday-2009 这样的 URL。

在我的模型中,我希望事件标题的范围限定为用户名,以便 nfmmrmagoo 都可以拥有事件 birthday-2009,而无需他们被殴打。

# app/models/event.rb
def Event < ActiveRecord::Base
  has_friendly_id :title, :use_slug => true, :scope => :user
  belongs_to :user

  ...
end

我还在我的用户模型中使用 has_Friendly_id :username

但是,在我的控制器中,我只提取与登录用户(current_user)相关的事件:

def EventsController < ApplicationController
  def show
    @event = current_user.events.find(params[:id])
  end

  ...
end

这不起作用;我收到错误 ActiveRecord::RecordNotFound;预期的范围,但没有得到

# This works
@event = current_user.events.find(params[:id], :scope => 'nfm')

# This doesn't work, even though User has_friendly_id, so current_user.to_param _should_ return "nfm"
@event = current_user.events.find(params[:id], :scope => current_user)

# But this does work!
@event = current_user.events.find(params[:id], :scope => current_user.to_param)

SO,如果我将 :scope 限制为 current_user.events ,为什么我需要显式指定它?为什么需要显式调用 current_user.to_param ?我可以覆盖这个吗?

I'm using the friendly_id gem. I also have my routes nested:

# config/routes.rb
map.resources :users do |user|
  user.resources :events
end

So I have URLs like /users/nfm/events/birthday-2009.

In my models, I want the event title to be scoped to the username, so that both nfm and mrmagoo can have events birthday-2009 without them being slugged.

# app/models/event.rb
def Event < ActiveRecord::Base
  has_friendly_id :title, :use_slug => true, :scope => :user
  belongs_to :user

  ...
end

I'm also using has_friendly_id :username in my User model.

However, in my controller, I'm only pulling out events pertinent to the user who is logged in (current_user):

def EventsController < ApplicationController
  def show
    @event = current_user.events.find(params[:id])
  end

  ...
end

This doesn't work; I get the error ActiveRecord::RecordNotFound; expected scope but got none.

# This works
@event = current_user.events.find(params[:id], :scope => 'nfm')

# This doesn't work, even though User has_friendly_id, so current_user.to_param _should_ return "nfm"
@event = current_user.events.find(params[:id], :scope => current_user)

# But this does work!
@event = current_user.events.find(params[:id], :scope => current_user.to_param)

SO, why do I need to explicitly specify :scope if I'm restricting it to current_user.events anyway? And why does current_user.to_param need to be called explicitly? Can I override this?

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帝王念 2024-08-19 11:50:52

我在Friendly_id 2.2.7上遇到了完全相同的问题,但是当我在Rails 2.3.5应用程序中更新到Friendly_id 3.0.4时,一切正常。我已经测试了您在我的应用程序中提到的所有 4 个查找调用,它们都有效。

需要注意的是一些可能影响您的 API 更改。我遇到的问题是:

  • :strip_diacritics 已替换为 :strip_non_ascii

    我决定切换到 Stringex 的 String#to_url,而不是覆盖 normalize_Friendly_id

  • resource.has_better_id? 现在是 !resource.Friendly_id_status .best?

  • resource.found_using_numeric_id? code> 现在是 resource.Friendly_id_status.numeric?

I had the exact same problem with friendly_id 2.2.7 but when I updated to friendly_id 3.0.4 in my Rails 2.3.5 app, everything works. I have test all 4 find invocations you mentioned in my app and they work.

Something to take note of are a few API changes that may affect you. The ones I ran into were:

  • :strip_diacritics has been replaced with :strip_non_ascii.

    I decided to switch to Stringex's String#to_url instead by overriding normalize_friendly_id

  • resource.has_better_id? is now !resource.friendly_id_status.best?

  • resource.found_using_numeric_id? is now resource.friendly_id_status.numeric?

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