diff options
Diffstat (limited to 'guides/source')
| -rw-r--r-- | guides/source/action_view_overview.md | 21 | ||||
| -rw-r--r-- | guides/source/association_basics.md | 20 | ||||
| -rw-r--r-- | guides/source/initialization.md | 4 |
3 files changed, 22 insertions, 23 deletions
diff --git a/guides/source/action_view_overview.md b/guides/source/action_view_overview.md index 02ef32d66e..e76158e259 100644 --- a/guides/source/action_view_overview.md +++ b/guides/source/action_view_overview.md @@ -1361,18 +1361,6 @@ date_field_tag "dob" Provides functionality for working with JavaScript in your views. -#### button_to_function - -Returns a button that'll trigger a JavaScript function using the onclick handler. Examples: - -```ruby -button_to_function "Greeting", "alert('Hello world!')" -button_to_function "Delete", "if (confirm('Really?')) do_delete()" -button_to_function "Details" do |page| - page[:details].visual_effect :toggle_slide -end -``` - #### define_javascript_functions Includes the Action Pack JavaScript libraries inside a single `script` tag. @@ -1397,15 +1385,6 @@ alert('All is good') </script> ``` -#### link_to_function - -Returns a link that will trigger a JavaScript function using the onclick handler and return false after the fact. - -```ruby -link_to_function "Greeting", "alert('Hello world!')" -# => <a onclick="alert('Hello world!'); return false;" href="#">Greeting</a> -``` - ### NumberHelper Provides methods for converting numbers into formatted strings. Methods are provided for phone numbers, currency, percentage, precision, positional notation, and file size. diff --git a/guides/source/association_basics.md b/guides/source/association_basics.md index ec6017ff73..d215d8b30f 100644 --- a/guides/source/association_basics.md +++ b/guides/source/association_basics.md @@ -829,6 +829,7 @@ The `belongs_to` association supports these options: * `:counter_cache` * `:dependent` * `:foreign_key` +* `:primary_key` * `:inverse_of` * `:polymorphic` * `:touch` @@ -913,6 +914,25 @@ end TIP: In any case, Rails will not create foreign key columns for you. You need to explicitly define them as part of your migrations. +##### `:primary_key` + +By convention, Rails assumes that the `id` column is used to hold the primary key of it's table. +The `:primary_key` option allows you to specify a different column. + +For example, given we have a `users` table with `guid` as the primary key. If we want a separate `todos` table to hold the foreign key `user_id` in the `guid` column, then we can use `primary_key` to achieve this like so: + +```ruby +class User < ActiveRecord::Base + self.primary_key = 'guid' # primary key is guid and not id +end + +class Todo < ActiveRecord::Base + belongs_to :user, primary_key: 'guid' +end +``` + +When we execute `@user.todos.create` then the `@todo` record will have `user_id` value as the `guid` value of `@user`. + ##### `:inverse_of` The `:inverse_of` option specifies the name of the `has_many` or `has_one` association that is the inverse of this association. Does not work in combination with the `:polymorphic` options. diff --git a/guides/source/initialization.md b/guides/source/initialization.md index c0c8b7d4b6..199545a3b3 100644 --- a/guides/source/initialization.md +++ b/guides/source/initialization.md @@ -34,7 +34,7 @@ Launch! Let's start to boot and initialize the app. A Rails application is usually started by running `rails console` or `rails server`. -### `railties/bin/rails` +### `railties/exe/rails` The `rails` in the command `rails server` is a ruby executable in your load path. This executable contains the following lines: @@ -45,7 +45,7 @@ load Gem.bin_path('railties', 'rails', version) ``` If you try out this command in a Rails console, you would see that this loads -`railties/bin/rails`. A part of the file `railties/bin/rails.rb` has the +`railties/exe/rails`. A part of the file `railties/exe/rails.rb` has the following code: ```ruby |