Module: GetArgs
- Included in:
- Method, UnboundMethod
- Defined in:
- lib/merb-action-args/mri_args.rb,
lib/merb-action-args/vm_args.rb,
lib/merb-action-args/jruby_args.rb
Overview
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]
Constant Summary collapse
- Methods =
org.jruby.internal.runtime.methods
Instance Method Summary collapse
- #build_args(args_node) ⇒ Object
-
#get_args ⇒ Object
Returns Array:: Method arguments and their default values.
Instance Method Details
#build_args(args_node) ⇒ Object
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# 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 ⇒ Object
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
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# File 'lib/merb-action-args/mri_args.rb', line 82 def get_args unless respond_to?(:parameters) raise NotImplementedError, "Ruby #{RUBY_VERSION} doesn't support #{self.class}#parameters" end required = [] optional = [] parameters.each do |(type, name)| if type == :opt required << [name, nil] optional << name else required << [name] end end return [required, optional] end |