Method: JSON.pretty_generate

Defined in:
lib/json/common.rb

.pretty_generate(obj, opts = nil) ⇒ Object Also known as: pretty_unparse

:call-seq:

JSON.pretty_generate(obj, opts = nil) -> new_string

Arguments obj and opts here are the same as arguments obj and opts in JSON.generate.

Default options are:

{
  indent: '  ',   # Two spaces
  space: ' ',     # One space
  array_nl: "\n", # Newline
  object_nl: "\n" # Newline
}

Example:

obj = {foo: [:bar, :baz], bat: {bam: 0, bad: 1}}
json = JSON.pretty_generate(obj)
puts json

Output:

{
  "foo": [
    "bar",
    "baz"
  ],
  "bat": {
    "bam": 0,
    "bad": 1
  }
}
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# File 'lib/json/common.rb', line 374

def pretty_generate(obj, opts = nil)
  if State === opts
    state, opts = opts, nil
  else
    state = JSON.create_pretty_state
  end
  if opts
    if opts.respond_to? :to_hash
      opts = opts.to_hash
    elsif opts.respond_to? :to_h
      opts = opts.to_h
    else
      raise TypeError, "can't convert #{opts.class} into Hash"
    end
    state.configure(opts)
  end
  state.generate(obj)
end