Module: HashBuilder

Defined in:
lib/hash_builder.rb,
lib/hash_builder/version.rb,
lib/hash_builder/template.rb

Defined Under Namespace

Classes: Template

Constant Summary collapse

VERSION = 
"0.2.1"

Class Method Summary collapse

Class Method Details

.build(args: [], scope: nil, locals: {}, &block) ⇒ Object

Build a Hash.

args - Arguments to be passed to the hash scope - Method calls in the block will be sent to scope object locals - Local variables to be injected into the block

Examples

HashBuilder.build(locals: {foo: 1}) do
  foo foo
  bar 2
end
# => { foo: 1, bar: 2}



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# File 'lib/hash_builder.rb', line 20

def self.build (args: [], scope: nil, locals: {}, &block)
  env = ExecEnv::Env.new
  env.scope = scope
  env.locals = locals
  
  block_result = env.exec(*args, &block)

  messages = env.messages

  if messages.size > 0
    hash = {}
    
    messages.each do |(name, args, block)|
      arg = args.first

      # ActiveRecord relations respond to :map but are no Enumerable
      if args.size == 1 && block && arg.respond_to?(:map) && !arg.is_a?(Hash)
        hash[name] = arg.map do |*objects|
          HashBuilder.build(args: objects, scope: scope, locals: locals, &block)
        end
      elsif block
        hash[name] = HashBuilder.build(scope: scope, locals: locals, &block)
      elsif args.size == 1
        hash[name] = arg
      end
    end

    hash
  else
    block_result
  end
end