What is ERB language?

What is ERB language?

ERB stands for Embedded Ruby, and is used to insert Ruby variables inside templates, e.g. HTML and YAML. ERB is a Ruby class that accepts text, and evaluates and replaces Ruby code surrounded by ERB markup.

What is ERB format?

What is a ERB file. ERB files contain source code written in a programming language of the same name. The ERB language is essentially a Ruby templating language. ERB files are saved in a plain text format which allows them to be opened in any text editing program.

What is ERB in puppet?

ERB is a templating language based on Ruby. Puppet can evaluate ERB templates with the template and inline_template functions. This page covers how to write ERB templates. See Templates for information about what templates are and how to evaluate them.

How do you comment on ERB?

erb is by definition “embedded ruby”, you can embed every ruby code between: <%= and the other: %> , typically all written in one line. In addition, ruby one-line comments start always with # , so the <%=# Comment %> style matches perfectly with both pure-ruby and erb styles for one-line comments.

What is JSON ERB?

json. erb is basically the raw json response but with some parts evaluated in ruby. For example, this is a valid json. erb, that produces valid json: { “status” : “success!” }

Can Ruby be embedded into HTML?

eRuby (Embedded Ruby) is a templating system that embeds Ruby into a text document. It is often used to embed Ruby code in an HTML document, similar to ASP, JSP and PHP and other server-side scripting languages….eRuby.

Stable release	1.0.5 / December 14, 2004
Type	Template engine
License	GPL and LGPL

How do I open an ERB file in HTML?

You can open them in the browser, but the <% %> and <%= %> tags will get shown as-is instead of executing the Ruby code. These are template files that need to get processed by Rails to fill in data at runtime.

What does <%= mean in ERB?

<% %> Executes the ruby code within the brackets. <%= %> Prints something into erb file. <%== %>

How do you comment multiple lines in rails?

A multi-line comment begins with the =begin token and ends with the =end token. These tokens should start at the beginning of the line and be the only thing on the line. Anything between these two tokens is ignored by the Ruby interpreter.

What is binding in Ruby?

To keep track of the current scope, Ruby uses bindings, which encapsulate the execution context at each position in the code. The binding method returns a Binding object which describes the bindings at the current position. Code can be evaluated on the binding by using the #eval method.