diff options
| -rw-r--r-- | guides/source/action_view_overview.md | 4 | ||||
| -rw-r--r-- | guides/source/asset_pipeline.md | 6 | ||||
| -rw-r--r-- | guides/source/engines.md | 4 | ||||
| -rw-r--r-- | guides/source/getting_started.md | 60 | ||||
| -rw-r--r-- | guides/source/layouts_and_rendering.md | 4 | ||||
| -rw-r--r-- | guides/source/rails_on_rack.md | 2 |
6 files changed, 53 insertions, 27 deletions
diff --git a/guides/source/action_view_overview.md b/guides/source/action_view_overview.md index bdb51d881d..bd8e5ce4f2 100644 --- a/guides/source/action_view_overview.md +++ b/guides/source/action_view_overview.md @@ -941,9 +941,9 @@ Creates a form and a scope around a specific model object that is used as a base ```html+erb <%= form_for @post do |f| %> <%= f.label :title, 'Title' %>: - <%= f.text_field :title %><br /> + <%= f.text_field :title %><br> <%= f.label :body, 'Body' %>: - <%= f.text_area :body %><br /> + <%= f.text_area :body %><br> <% end %> ``` diff --git a/guides/source/asset_pipeline.md b/guides/source/asset_pipeline.md index b68c24acfd..a6e3d3b0ac 100644 --- a/guides/source/asset_pipeline.md +++ b/guides/source/asset_pipeline.md @@ -69,12 +69,12 @@ Rails' old strategy was to append a date-based query string to every asset linke The query string strategy has several disadvantages: -1. **Not all caches will reliably cache content where the filename only differs by query parameters**<br /> +1. **Not all caches will reliably cache content where the filename only differs by query parameters**<br> [Steve Souders recommends](http://www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/), "...avoiding a querystring for cacheable resources". He found that in this case 5-20% of requests will not be cached. Query strings in particular do not work at all with some CDNs for cache invalidation. -2. **The file name can change between nodes in multi-server environments.**<br /> +2. **The file name can change between nodes in multi-server environments.**<br> The default query string in Rails 2.x is based on the modification time of the files. When assets are deployed to a cluster, there is no guarantee that the timestamps will be the same, resulting in different values being used depending on which server handles the request. -3. **Too much cache invalidation**<br /> +3. **Too much cache invalidation**<br> When static assets are deployed with each new release of code, the mtime(time of last modification) of _all_ these files changes, forcing all remote clients to fetch them again, even when the content of those assets has not changed. Fingerprinting fixes these problems by avoiding query strings, and by ensuring that filenames are consistent based on their content. diff --git a/guides/source/engines.md b/guides/source/engines.md index bc66ed256e..d714f84731 100644 --- a/guides/source/engines.md +++ b/guides/source/engines.md @@ -346,7 +346,7 @@ Next, the partial that this line will render needs to exist. Create a new direct <h3>New comment</h3> <%= form_for [@post, @post.comments.build] do |f| %> <p> - <%= f.label :text %><br /> + <%= f.label :text %><br> <%= f.text_area :text %> </p> <%= f.submit %> @@ -515,7 +515,7 @@ First, the `author_name` text field needs to be added to the `app/views/blorgh/p ```html+erb <div class="field"> - <%= f.label :author_name %><br /> + <%= f.label :author_name %><br> <%= f.text_field :author_name %> </div> ``` diff --git a/guides/source/getting_started.md b/guides/source/getting_started.md index 06a81366e3..9b2fa315a1 100644 --- a/guides/source/getting_started.md +++ b/guides/source/getting_started.md @@ -138,7 +138,7 @@ application. Most of the work in this tutorial will happen in the `app/` folder, |config/|Configure your application's runtime rules, routes, database, and more. This is covered in more detail in [Configuring Rails Applications](configuring.html)| |config.ru|Rack configuration for Rack based servers used to start the application.| |db/|Contains your current database schema, as well as the database migrations.| -|Gemfile<br />Gemfile.lock|These files allow you to specify what gem dependencies are needed for your Rails application. These files are used by the Bundler gem. For more information about Bundler, see [the Bundler website](http://gembundler.com) | +|Gemfile<br>Gemfile.lock|These files allow you to specify what gem dependencies are needed for your Rails application. These files are used by the Bundler gem. For more information about Bundler, see [the Bundler website](http://gembundler.com) | |lib/|Extended modules for your application.| |log/|Application log files.| |public/|The only folder seen to the world as-is. Contains the static files and compiled assets.| @@ -264,11 +264,14 @@ Blog::Application.routes.draw do end ``` -If you run `rake routes`, you'll see that all the routes for the -standard RESTful actions. +If you run `rake routes`, you'll see that it has defined routes for all the +standard RESTful actions. The meaning of the prefix column (and other columns) +will be seen later, but for now notice that Rails has inferred the +singular form `post` and makes meaningful use of the distinction. ```bash $ rake routes + Prefix Verb URI Pattern Controller#Action posts GET /posts(.:format) posts#index POST /posts(.:format) posts#create new_post GET /posts/new(.:format) posts#new @@ -394,9 +397,27 @@ Edit the `form_for` line inside `app/views/posts/new.html.erb` to look like this <%= form_for :post, url: posts_path do |f| %> ``` -In this example, the `posts_path` helper is passed to the `:url` option. What Rails will do with this is that it will point the form to the `create` action of the current controller, the `PostsController`, and will send a `POST` request to that route. - -By using the `post` method rather than the `get` method, Rails will define a route that will only respond to POST methods. The POST method is the typical method used by forms all over the web. +In this example, the `posts_path` helper is passed to the `:url` option. +To see what Rails will do with this, we look back at the output of +`rake routes`: +```bash +$ rake routes + Prefix Verb URI Pattern Controller#Action + posts GET /posts(.:format) posts#index + POST /posts(.:format) posts#create + new_post GET /posts/new(.:format) posts#new +edit_post GET /posts/:id/edit(.:format) posts#edit + post GET /posts/:id(.:format) posts#show + PATCH /posts/:id(.:format) posts#update + PUT /posts/:id(.:format) posts#update + DELETE /posts/:id(.:format) posts#destroy + root / welcome#index +``` +The `posts_path` helper tells Rails to point the form +to the URI Pattern associated with the `posts` prefix; and +the form will (by default) send a `POST` request +to that route. This is associated with the +`create` action of the current controller, the `PostsController`. With the form and its associated route defined, you will be able to fill in the form and then click the submit button to begin the process of creating a new post, so go ahead and do that. When you submit the form, you should see a familiar error: @@ -1016,9 +1037,14 @@ content: ``` Everything except for the `form_for` declaration remained the same. -How `form_for` can figure out the right `action` and `method` attributes when building the form -will be explained in [just a moment](/form_helpers.html#binding-a-form-to-an-object). -For now, let's update the `app/views/posts/new.html.erb` view to use this new partial, rewriting it +The reason we can use this shorter, simpler `form_for` declaration +to stand in for either of the other forms is that `@post` is a *resource* +corresponding to a full set of RESTful routes, and Rails is able to infer +which URI and method to use. +For more information about this use of `form_for`, see +[Resource-oriented style](//api.rubyonrails.org/classes/ActionView/Helpers/FormHelper.html#method-i-form_for-label-Resource-oriented+style). + +Now, let's update the `app/views/posts/new.html.erb` view to use this new partial, rewriting it completely: ```html+erb @@ -1289,11 +1315,11 @@ So first, we'll wire up the Post show template <h2>Add a comment:</h2> <%= form_for([@post, @post.comments.build]) do |f| %> <p> - <%= f.label :commenter %><br /> + <%= f.label :commenter %><br> <%= f.text_field :commenter %> </p> <p> - <%= f.label :body %><br /> + <%= f.label :body %><br> <%= f.text_area :body %> </p> <p> @@ -1369,11 +1395,11 @@ template. This is where we want the comment to show, so let's add that to the <h2>Add a comment:</h2> <%= form_for([@post, @post.comments.build]) do |f| %> <p> - <%= f.label :commenter %><br /> + <%= f.label :commenter %><br> <%= f.text_field :commenter %> </p> <p> - <%= f.label :body %><br /> + <%= f.label :body %><br> <%= f.text_area :body %> </p> <p> @@ -1435,11 +1461,11 @@ following: <h2>Add a comment:</h2> <%= form_for([@post, @post.comments.build]) do |f| %> <p> - <%= f.label :commenter %><br /> + <%= f.label :commenter %><br> <%= f.text_field :commenter %> </p> <p> - <%= f.label :body %><br /> + <%= f.label :body %><br> <%= f.text_area :body %> </p> <p> @@ -1465,11 +1491,11 @@ create a file `app/views/comments/_form.html.erb` containing: ```html+erb <%= form_for([@post, @post.comments.build]) do |f| %> <p> - <%= f.label :commenter %><br /> + <%= f.label :commenter %><br> <%= f.text_field :commenter %> </p> <p> - <%= f.label :body %><br /> + <%= f.label :body %><br> <%= f.text_area :body %> </p> <p> diff --git a/guides/source/layouts_and_rendering.md b/guides/source/layouts_and_rendering.md index 5908801bc9..5b6e5387ff 100644 --- a/guides/source/layouts_and_rendering.md +++ b/guides/source/layouts_and_rendering.md @@ -88,7 +88,7 @@ If we want to display the properties of all the books in our view, we can do so <% end %> </table> -<br /> +<br> <%= link_to "New book", new_book_path %> ``` @@ -1026,7 +1026,7 @@ You can also pass local variables into partials, making them even more powerful ```html+erb <%= form_for(zone) do |f| %> <p> - <b>Zone name</b><br /> + <b>Zone name</b><br> <%= f.text_field :name %> </p> <p> diff --git a/guides/source/rails_on_rack.md b/guides/source/rails_on_rack.md index d144fba762..b1a7865d10 100644 --- a/guides/source/rails_on_rack.md +++ b/guides/source/rails_on_rack.md @@ -326,7 +326,7 @@ The following shows how to replace use `Rack::Builder` instead of the Rails supp config.middleware.clear ``` -<br /> +<br> <strong>Add a `config.ru` file to `Rails.root`</strong> ```ruby |