Question

我正在尝试创建允许的路线：

GET /locations           # locations#index
...
GET /locations/:id       # locations#show
GET /locations/:regions  # get locations by one or more region codes (e.g. 'MN+WI')

我的路线：

resources :locations
# allow one or more, 2-character region codes (mixed case; comma or plus delimited)
get "/locations/:regions/" => "locations#index", :constraints => {:regions=>/[a-zA-Z]{2}[\+\,]?/}
root 'locations#index'

当我尝试连接到http://localhost:3000/locations/MN+WI时，出现错误，显示Couldn't find Location with id=MN+WI突出显示locations_controller的这一部分：

def set_location
  @location = Location.find(params[:id])
end

由于某种原因，约束未匹配，导致无法通过数值识别资源的尝试。

我错过了什么？

**编辑**

locations #index action：

# GET /locations
# GET /locations.json
def index
  @locations = Location.order('name')
  @locations = Location.for_regions(params[:regions]) if params[:regions].present?
  @json = @locations.to_gmaps4rails
end

我重新安排了路线：

# allow one or more, 2-character region codes (mixed case; comma or plus delimited)
get "/locations/:regions/" => "locations#index", :constraints => {:regions=>/[a-zA-Z]{2}[\+\,]?/}
resources :locations
root 'locations#index'

成功：

http://localhost:3000/locations/1
http://localhost:3000/locations/MN

失败：

http://localhost:3000/locations/MN+WI（与上述相同的错误）

Answer 1

路线从上到下进行锯齿，找到的第一条路线被触发。因此，来自get '/locations/:id' => 'locations#show'组的resources :locations路由优先于您的约束。

因此，路线的一般规则是，您应该将更多特定路线设置为更常见的路线。

在这种情况下，您需要将该路线向上移动并将其放在资源之前。

Rails路由约束被忽略

1 个答案: