jbuilder

https://github.com/rails/jbuilder

Ruby

Jbuilder: generate JSON objects with a Builder-style DSL

Jbuilder#extract!

Extracts the mentioned attributes or hash elements from the passed object and turns them into attributes of the JSON.

Example:

  @person = Struct.new(:name, :age).new('David', 32)

  or you can utilize a Hash

  @person = { name: 'David', age: 32 }

  json.extract! @person, :name, :age

  { "name": David", "age": 32 }, { "name": Jamie", "age": 31 }

You can also use the call syntax instead of an explicit extract! call:

  json.(@person, :name, :age)

Source | Google | Stack overflow

Edit

git clone [email protected]:rails/jbuilder.git
cd jbuilder
open lib/jbuilder.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Jbuilder-extract--for-pr

# Commit to git

git add lib/jbuilder.rbgit commit -m "better docs for Jbuilder#extract!"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Jbuilder-extract--for-pr

hub pull-request

# Celebrate!