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GetArgs

Used in mapping controller arguments to the params hash. NOTE: You must have the ‘ruby2ruby’ gem installed for this to work.

Examples

# In PostsController
def show(id)  #=> id is the same as params[:id]

Constants

Methods

Public Instance Methods

build_args(args_node) click to toggle source 
# File lib/merb-action-args/jruby_args.rb, line 25
def build_args(args_node)
  args = []
  required = []
  optional = []

  # required args
  if (args_node.args && args_node.args.size > 0)
    required = args_node.args.child_nodes.map { |arg| [arg.name.to_s.intern] }
  end

  # optional args
  if (args_node.opt_args && args_node.opt_args.size > 0)
    optional = args_node.opt_args.child_nodes.map do |arg|
      name = arg.name.to_s.intern
      value_node = arg.value_node
      case value_node
      when org.jruby.ast::FixnumNode
        value = value_node.value
      when org.jruby.ast::SymbolNode
        value = value_node.get_symbol(JRuby.runtime)
      when org.jruby.ast::StrNode
        value = value_node.value
      else
        value = nil
      end
      [name, value]
    end
  end

  args = required + optional
  return [args, optional.map{|name,| name}]
end
get_args() click to toggle source

Returns

Array

Method arguments and their default values.

Examples

class Example
  def hello(one,two="two",three)
  end

  def goodbye
  end
end

Example.instance_method(:hello).get_args
  #=> [[:one], [:two, "two"], [:three, "three"]]
Example.instance_method(:goodbye).get_args  #=> nil
# File lib/merb-action-args/mri_args.rb, line 82
def get_args
  klass, meth = self.to_s.split(/ /).to_a[1][0..-2].split("#")
  # Remove stupidity for #<Method: Class(Object)#foo>
  klass = $` if klass =~ /\(/
  ParseTreeArray.translate(Object.full_const_get(klass), meth).get_args
end

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