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MooX::Attribute::ENV(3User Contributed Perl DocumentatiMooX::Attribute::ENV(3) NAME MooX::Attribute::ENV - Allow Moo attributes to get their values from %ENV SYNOPSIS package MyMod; use Moo; use MooX::Attribute::ENV; # look for $ENV{attr_val} and $ENV{ATTR_VAL} has attr => ( is => 'ro', env_key => 'attr_val', ); # looks for $ENV{otherattr} and $ENV{OTHERATTR}, then any default has otherattr => ( is => 'ro', env => 1, default => 7, ); # looks for $ENV{xxx_prefixattr} and $ENV{XXX_PREFIXATTR} has prefixattr => ( is => 'ro', env_prefix => 'xxx', ); # looks for $ENV{MyMod_packageattr} and $ENV{MYMOD_PACKAGEATTR} has packageattr => ( is => 'ro', env_package_prefix => 1, ); $ perl -MMyMod -E 'say MyMod->new(attr => 2)->attr' # 2 $ ATTR_VAL=3 perl -MMyMod -E 'say MyMod->new->attr' # 3 $ OTHERATTR=4 perl -MMyMod -E 'say MyMod->new->otherattr' # 4 DESCRIPTION This is a Moo extension. It allows other attributes for "has" in Moo. If any of these are given, then instead of the normal value-setting "chain" for attributes of given, default; the chain will be given, environment, default. The environment will be searched for either the given case, or upper case, version of the names discussed below. When a prefix is mentioned, it will be prepended to the mentioned name, with a "_" in between. ADDITIONAL ATTRIBUTES env Boolean. If true, the name is the attribute, no prefix. env_key String. If true, the name is the given value, no prefix. env_prefix String. The prefix is the given value. env_package_prefix Boolean. If true, use as the prefix the current package-name, with "::" replaced with "_". AUTHOR Ed J, porting John Napiorkowski's excellent MooseX::Attribute::ENV. LICENCE The same terms as Perl itself. perl v5.32.1 2019-03-15 MooX::Attribute::ENV(3)
NAME | SYNOPSIS | DESCRIPTION | ADDITIONAL ATTRIBUTES | AUTHOR | LICENCE
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