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Diffstat (limited to 'guides/source/routing.md')
| -rw-r--r-- | guides/source/routing.md | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/guides/source/routing.md b/guides/source/routing.md index 52f11f92bd..cf828462ce 100644 --- a/guides/source/routing.md +++ b/guides/source/routing.md @@ -615,6 +615,8 @@ get 'photos/:id', to: 'photos#show', defaults: { format: 'jpg' } Rails would match `photos/12` to the `show` action of `PhotosController`, and set `params[:format]` to `"jpg"`. +NOTE: You cannot override defaults via query parameters - this is for security reasons. The only defaults that can be overridden are dynamic segments via substitution in the URL path. + ### Naming Routes You can specify a name for any route using the `:as` option: @@ -1087,6 +1089,20 @@ edit_videos GET /videos/:identifier/edit(.:format) videos#edit Video.find_by(identifier: params[:identifier]) ``` +You can override `ActiveRecord::Base#to_param` of a related +model to constructe an URL. + +```ruby +class Video < ActiveRecord::Base + def to_param # overridden + identifier + end +end + +video = Video.find_by(identifier: "Roman-Holiday") +edit_videos_path(video) # => "/videos/Roman-Holiday" +``` + Inspecting and Testing Routes ----------------------------- |