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Diffstat (limited to 'guides/source/working_with_javascript_in_rails.md')
| -rw-r--r-- | guides/source/working_with_javascript_in_rails.md | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/guides/source/working_with_javascript_in_rails.md b/guides/source/working_with_javascript_in_rails.md index ddefaf6ff8..aba3c9ed61 100644 --- a/guides/source/working_with_javascript_in_rails.md +++ b/guides/source/working_with_javascript_in_rails.md @@ -111,7 +111,9 @@ paintIt = (element, backgroundColor, textColor) -> element.style.color = textColor $ -> - $("a[data-background-color]").click -> + $("a[data-background-color]").click (e) -> + e.preventDefault() + backgroundColor = $(this).data("background-color") textColor = $(this).data("text-color") paintIt(this, backgroundColor, textColor) @@ -169,7 +171,7 @@ This will generate the following HTML: </form> ``` -Note the `data-remote='true'`. Now, the form will be submitted by Ajax rather +Note the `data-remote="true"`. Now, the form will be submitted by Ajax rather than by the browser's normal submit mechanism. You probably don't want to just sit there with a filled out `<form>`, though. @@ -180,12 +182,12 @@ bind to the `ajax:success` event. On failure, use `ajax:error`. Check it out: $(document).ready -> $("#new_post").on("ajax:success", (e, data, status, xhr) -> $("#new_post").append xhr.responseText - ).bind "ajax:error", (e, xhr, status, error) -> + ).on "ajax:error", (e, xhr, status, error) -> $("#new_post").append "<p>ERROR</p>" ``` Obviously, you'll want to be a bit more sophisticated than that, but it's a -start. +start. You can see more about the events [in the jquery-ujs wiki](https://github.com/rails/jquery-ujs/wiki/ajax). ### form_tag @@ -194,7 +196,17 @@ is very similar to `form_for`. It has a `:remote` option that you can use like this: ```erb -<%= form_tag('/posts', remote: true) %> +<%= form_tag('/posts', remote: true) do %> + ... +<% end %> +``` + +This will generate the following HTML: + +```html +<form accept-charset="UTF-8" action="/posts" data-remote="true" method="post"> + ... +</form> ``` Everything else is the same as `form_for`. See its documentation for full @@ -278,9 +290,7 @@ The index view (`app/views/users/index.html.erb`) contains: <b>Users</b> <ul id="users"> -<% @users.each do |user| %> - <%= render user %> -<% end %> +<%= render @users %> </ul> <br> @@ -301,10 +311,10 @@ The `app/views/users/_user.html.erb` partial contains the following: The top portion of the index page displays the users. The bottom portion provides a form to create a new user. -The bottom form will call the create action on the Users controller. Because +The bottom form will call the `create` action on the `UsersController`. Because the form's remote option is set to true, the request will be posted to the -users controller as an Ajax request, looking for JavaScript. In order to -service that request, the create action of your controller would look like +`UsersController` as an Ajax request, looking for JavaScript. In order to +serve that request, the `create` action of your controller would look like this: ```ruby @@ -394,4 +404,4 @@ Here are some helpful links to help you learn even more: * [jquery-ujs list of external articles](https://github.com/rails/jquery-ujs/wiki/External-articles) * [Rails 3 Remote Links and Forms: A Definitive Guide](http://www.alfajango.com/blog/rails-3-remote-links-and-forms/) * [Railscasts: Unobtrusive JavaScript](http://railscasts.com/episodes/205-unobtrusive-javascript) -* [Railscasts: Turbolinks](http://railscasts.com/episodes/390-turbolinks)
\ No newline at end of file +* [Railscasts: Turbolinks](http://railscasts.com/episodes/390-turbolinks) |