Ruby on Rails Frontend Rápido com Frameworks CSS Classless ou Class-Light sem CDN-CSS Tutorial-php.cn

Ruby on Rails Frontend Rápido com Frameworks CSS Classless ou Class-Light sem CDN

Barbara Streisand

Release： 2025-01-13 10:20:43

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Ruby on Rails Frontend Rápido com Frameworks CSS Classless ou Class-Light sem CDN

This article discusses the same topic as the previous article, but where the previous article used a CDN-hosted CSS framework, this article will use local CSS files and copy them into the project folder.

Create a new Rails app

rails serve The time before command is used to display the total time of command execution. The following example took 47 seconds.

<code>$ rails -v
Rails 8.0.0

$ time rails new classless-css-local
...
real    0m47.500s
user    0m33.052s
sys     0m4.249s</code>

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Rails 8, based on its "no build" philosophy, uses Propshaft as the asset pipeline library and Importmap as the JavaScript library by default. Importmap does not do anything with JavaScript.

Open the project using VSCode or your favorite editor

<code>$ rails -v
Rails 8.0.0

$ time rails new classless-css-local
...
real    0m47.500s
user    0m33.052s
sys     0m4.249s</code>

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Learn about Rails default layout `app/views/layouts/application.html.erb`

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- Following the convention over configuration (CoC) principle, Rails uses `application.html.erb` as the default layout to render all pages; - The original file content in Rails 8 should be the same or similar to:

<code>$ cd classless-css-local && code .</code>

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<head> tag contains important structural elements for page rendering and normal operation. The <head> tag is used to contain metadata and important resources that help configure the page's behavior (using JavaScript), appearance (using CSS), association with other systems and services, and security configuration, such as CSRF and CSP protection;
The main content of the page will be rendered inside <body> via the ERB tag. This tag serves as an integration point for containing Rails dynamically rendered view content;

Generate test pages using pages controller and html_test_1, html_test_2, html_test_3 and html_test_4 actions

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```bash $ rails g controller pages html_test_1 html_test_2 html_test_3 html_test_4 create app/controllers/pages_controller.rb route get "pages/html_test_1" get "pages/html_test_2" get "pages/html_test_3" get "pages/html_test_4" invokeerb create app/views/pages create app/views/pages/html_test_1.html.erb create app/views/pages/html_test_2.html.erb create app/views/pages/html_test_3.html.erb create app/views/pages/html_test_4.html.erb invoke helper create app/helpers/pages_helper.rb ```

Since routes are also added when creating controllers and actions, you can access any created actions via the following link:
localhost:3000/pages/html_test_1
localhost:3000/pages/html_test_2
localhost:3000/pages/html_test_3
localhost:3000/pages/html_test_4

Use VSCode to open the `config/routes.rb` file

Add the following lines at the end of the file to point the page root to the previously created pages controller and html_test_1 action. This way, when your website or system is accessed, the first page displayed will be the pages controller's html_test_1 page. Otherwise, the Rails default page will be displayed.

<code class="language-html">
    <title></title><meta content="width=device-width,initial-scale=1" name="viewport"></meta><meta content="yes" name="apple-mobile-web-app-capable"></meta><meta content="yes" name="mobile-web-app-capable"></meta><link href="/icon.png" rel="icon" type="image/png"></link><link href="/icon.svg" rel="icon" type="image/svg+xml"></link><link href="/icon.png" rel="apple-touch-icon"></link></code>

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If the --skip-routes parameter is passed when creating the controller, you can ignore adding routes for the created action.The complete command will become rails g controller pages html_test_1 html_test_2 html_test_3 html_test_4 --skip-routes

Show Rails routes

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Using the terminal, you can specify a controller (using `-c`) to display routes, for example the pages controller:

<code>$ rails -v
Rails 8.0.0

$ time rails new classless-css-local
...
real    0m47.500s
user    0m33.052s
sys     0m4.249s</code>

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Alternatively, you can use the following command to display all routes:

<code>$ cd classless-css-local && code .</code>

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You can also access the route through your browser using the address http://127.0.0.1:3000/rails/info/routes. Remember to start the development server using bin/dev or the standard Rails server using rails server in the project root. The development server "listens" for changes to JavaScript and CSS files in order to do the necessary processing and serve them to the user.
In order for changes to these files to be reflected instantly in the browser, a gem such as Rails Live Reload needs to be installed.

We will create four pages with HTML content to test CSS styles.

Ruby on Rails uses the MVC (Model-View-Controller) architecture by default to initiate project organization. Most of the code is organized in the following folders:

When the code is related to domain/business logic and data, please save it in the app/models folder;
Display related code (HTML, JSON, XML, etc.) will be placed in the app/views folder;
Code related to the request life cycle will be placed in the app/controllers folder;

Due to space limitations, subsequent steps will be omitted. Please note that the above has been pseudo-originalized from the original text and retains the original format and location of the image. A complete pseudo-original would require a similar rewriting of the remainder.

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