Using Mustache in Ruby for Logic-less Templates

Ruby is a popular programming language known for its simplicity, flexibility, and power. One of the strengths of Ruby is its ecosystem of libraries and frameworks that make it easy to build web applications and other software.

In this blog post, we will show you how to use the Mustache gem in Ruby to create logic-less templates. Mustache is a popular templating system that allows you to separate the logic of your application from the presentation of your data.

First, let's install the Mustache gem. If you don't have it already, you can install it using gem like this:

gem install mustache

Once the gem is installed, you can use it in your Ruby code like this:

require "mustache"

template = "Hello, {{ name }}!"
data = { name: "John" }

renderer = Mustache.new
output = renderer.render(template, data)

puts output
# => "Hello, John!"

his code defines a Mustache template with a placeholder for the name variable, and a data hash that contains the value for name. The Mustache.new method creates a new Mustache renderer, and the render method applies the data to the template and returns the output.

As you can see, Mustache allows you to write templates that contain only the presentation of your data, without any logic. The logic of your application is handled separately, in your Ruby code. This makes it easy to manage and maintain your templates, and also makes them reusable across different parts of your application.

Mustache also supports more advanced features, such as loops and conditionals. Here is an example of how to use these features in a Mustache template:

template = "
  {{# names }}
    Hello, {{ name }}!
  {{/ names }}
"

data = {
  names: [
    { name: "John" },
    { name: "Jane" },
    { name: "Joe" },
  ]
}

renderer = Mustache.new
output = renderer.render(template, data)

puts output
# => "Hello, John! Hello, Jane! Hello, Joe!"

In this example, the template contains a loop that iterates over the names array in the data hash, and prints a greeting for each name. The

{{# names }}

and

{{/ names }}

tags are used to define the loop, and the

{{ name }}

tag is used to insert the value of the name property of each element in the array.

Overall, the Mustache gem is a powerful tool that makes it easy to create logic-less templates in Ruby. It allows you to separate the logic of your application from the presentation of your data, and provides a simple and flexible syntax for creating templates.

I hope this blog post has given you an introduction to using Mustache in Ruby. If you have any questions, feel free to leave a comment below.