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🔥 ruby - What is the difference between <%, <%=, <%# and -%> in ERB in Rails? - Stack Overflow

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Ruby 2.6.3 . ERB – Ruby Templating ¶ ↑ Introduction ¶ ↑. ERB provides an easy to use but powerful templating system for Ruby. Using ERB, actual Ruby code can be added to any plain text document for the purposes of generating document information details and/or flow control. Click to Play!

You’ve heard that Rails promotes “convention over configuration.” Default rendering is an excellent example of this. By default, controllers in Rails automatically render views with names that correspond to actions. For example, if you have this code in your BooksController class: Click to Play!

In Rails, ERB templates are used to insert Ruby code into HTML files, so that you can generate pages depending on what record the user is viewing, whether they're logged in or not, etc. Helpers are methods that can be used within your views, whether provided by Rails or written by you. Click to Play!

ERb lets you create .rhtml files that contain inline Ruby code, but because most of your application’s logic will be in the model and controller, the code that goes in your .rhtml files is. Click to Play!


ruby - What is the difference between <%, <%=, <%# and -%> in ERB in Rails? - Stack Overflow


Check the Ruby on Rails Guides Guidelines for style and conventions. If for whatever reason you spot something to fix but cannot patch it yourself, please open an issue. And last but not least, any kind of discussion regarding Ruby on Rails documentation is very welcome on the rubyonrails-docs mailing list.
You’ve heard that Rails promotes “convention over configuration.” Default rendering is an excellent example of this. By default, controllers in Rails automatically render views with names that correspond to actions. For example, if you have this code in your BooksController class:
Launch VS Code Quick Open (Ctrl+P), paste the following command, and press enter.


Databases & Rails: Wk3 HTML & ERB


Getting Started with Rails — Ruby on Rails Guides Rails erb ruby code


As we move next into introducing Ruby on Rails, know that this concept of embedding Ruby in a front-end document is extremely important — in fact, if you understand ERB and front-end code then you are well on your way to understanding conceptually how Rails makes things easier for web developers.
Check the Ruby on Rails Guides Guidelines for style and conventions. If for whatever reason you spot something to fix but cannot patch it yourself, please open an issue. And last but not least, any kind of discussion regarding Ruby on Rails documentation is very welcome on the rubyonrails-docs mailing list.
Ruby code in a view template is enclosed by . The enclosed text is what is called embedded Ruby or ERb. However, there's one slight subtlety. Sometimes we may want to write code that provides output to be displayed, and sometimes we have some simple, yet invisible logic needed to construct the page, such as a loop. If the Ruby code is.



ERB - APIdock


rails erb ruby code
That’s why Rails 3 made <%= support blocks. To handle blocks in this case, when you use <%=, Rails looks at the ERB code, sees whether it looks like a block by using a regular expression, and if it does rewrites the generated code on the fly to turn it into valid Ruby. More gory details in the excellent blog post “Block Helpers in Rails 3”.
Check the Ruby on Rails Guides Guidelines for style and conventions. If for whatever reason you spot something to fix but cannot patch it yourself, please open an issue. And last but not least, any kind of discussion regarding Ruby on Rails documentation is very welcome on the rubyonrails-docs mailing list.

rails erb ruby code I didn't want to hack or install a bunch of gems.
Still looking for a simple, elegant solution.
I use the free Perl script.
You can do the same with jade, which also isn't supported out of the box.
It counts the lines of code in your rails project's app folder - CSS, Ruby, CoffeeScript, and all.
At the root of your project, run this command: find.
It simply counts file lines, including blank lines and comments from any source code, configuration files, log files, binary files for crying out loud.
That's very different from LOC, by any possible definition of what constitutes a line of code.
On my current rails project, this reports 35K lines, vs.
Though fair enough, there's multiple solutions to everything.
This will still be inaccurate enough to be meaningless, potentially by an order rails erb ruby code magnitude.
It also excludes files inside directories with "vendor" machine game cost ice ready their name.
Provide details and share your research!
To learn more, see our.
Browse other questions tagged rails erb ruby code.


Ruby On Rails In 60 Minutes


14 15 16 17 18

3.2.3 ERB'in It Up. ERB allows you to embed Ruby code within templates. The YAML fixture format is pre-processed with ERB when Rails loads fixtures. This allows you to use Ruby to help you generate some sample data. For example, the following code generates a thousand users:


COMMENTS:


20.02.2019 in 21:38 Vilabar:

Пожалуйста не надо выносить ЭТО на обозрение



16.02.2019 in 17:43 Grole:

Согласен, это замечательная штука



20.02.2019 in 21:56 Zumuro:

Полностью разделяю Ваше мнение. В этом что-то есть и мне кажется это хорошая идея. Я согласен с Вами.



18.02.2019 in 20:58 Daishicage:

Я считаю, что Вы ошибаетесь. Могу это доказать.



16.02.2019 in 03:38 Dugami:

Между нами говоря, это очевидно. Предлагаю Вам попробовать поискать в google.com



23.02.2019 in 07:38 Vudogor:

Просто копец!



22.02.2019 in 13:26 Mikagul:

Предлагаю Вам зайти на сайт, где есть много информации на интересующую Вас тему.



15.02.2019 in 19:19 Tygogal:

Прошу прощения, что вмешался... Я разбираюсь в этом вопросе. Пишите здесь или в PM.



20.02.2019 in 05:30 Fera:

Согласен, это замечательное мнение



18.02.2019 in 04:07 Shaktigar:

Подскажите, а как пройти в библиотеку?



18.02.2019 in 23:22 Kazilrajas:

Я считаю, что Вы ошибаетесь. Пишите мне в PM, пообщаемся.



23.02.2019 in 00:33 Feran:

Прикольные слова



23.02.2019 in 11:42 Nezil:

Охотно принимаю. Тема интересна, приму участие в обсуждении. Я знаю, что вместе мы сможем прийти к правильному ответу.



15.02.2019 in 07:32 Taumuro:

Совершенно верно! Это отличная идея. Я Вас поддерживаю.



18.02.2019 in 19:18 Votilar:

Подскажите, где я могу найти больше информации по этому вопросу?



15.02.2019 in 18:07 Zolokus:

Очень полезная информация



16.02.2019 in 12:31 Gardahn:

Надо глянуть полюбому!!!



24.02.2019 in 21:27 Gunris:

верно полезный пост, спасибо.



21.02.2019 in 03:44 Telmaran:

Афтар недоумок



16.02.2019 in 11:50 Tokasa:

Какие нужные слова... супер, отличная идея



22.02.2019 in 01:51 Arazuru:

не.не для меня



24.02.2019 in 07:58 Vokora:

Что из этого вытекает?



21.02.2019 in 02:52 Shalkree:

точно точно !!!



21.02.2019 in 09:21 Gabei:

Что он может иметь в виду?



20.02.2019 in 08:07 Kigarg:

Я думаю, что это хорошая идея.



23.02.2019 in 19:33 Zulkimi:

Мрачные фотки такие:)



23.02.2019 in 07:05 Arashijar:

Вы абсолютно правы. В этом что-то есть и мне нравится Ваша мысль. Предлагаю вынести на общее обсуждение.



17.02.2019 in 04:44 Kihn:

Согласен, это забавный ответ




Total 28 comments.