MooseX::StrictConstructor

NAME

MooseX::StrictConstructor − Make your object constructors blow up on unknown attributes

VERSION

version 0.16

SYNOPSIS

    package My::Class;
    use Moose;
    use MooseX::StrictConstructor;
    has 'size' => ...;
    # then later ...
    # this blows up because color is not a known attribute
    My::Class−>new( size => 5, color => 'blue' );

DESCRIPTION

Simply loading this module makes your constructors "strict". If your constructor is called with an attribute init argument that your class does not declare, then it calls "Moose−"throw_error()>. This is a great way to catch small typos.

Subverting Strictness
You may find yourself wanting to have your constructor accept a parameter which does not correspond to an attribute.

In that case, you’ll probably also be writing a "BUILD()" or "BUILDARGS()" method to deal with that parameter. In a "BUILDARGS()" method, you can simply make sure that this parameter is not included in the hash reference you return. Otherwise, in a "BUILD()" method, you can delete it from the hash reference of parameters.

  sub BUILD {
      my $self   = shift;
      my $params = shift;
      if ( delete $params−>{do_something} ) {
          ...
      }
  }

BUGS

Please report any bugs or feature requests to "bug−moosex−strictconstructor AT rt DOT cpan DOT org", or through the web interface at <http://rt.cpan.org>. I will be notified, and then you’ll automatically be notified of progress on your bug as I make changes.

AUTHOR

Dave Rolsky <autarch AT urth DOT org>

COPYRIGHT AND LICENSE

This software is Copyright (c) 2011 by Dave Rolsky.

This is free software, licensed under:

  The Artistic License 2.0 (GPL Compatible)