为什么我得到“属性（类）没有通过类型约束，因为：验证失败'MooseX :: Runnable :: Invocation :: RunnableClass'”？

我试图创建下面的MooseX::Runnable docs的例子可运行的程序驼鹿：为什么我得到“属性（类）没有通过类型约束，因为：验证失败'MooseX :: Runnable :: Invocation :: RunnableClass'”？

package LaborData::Data::DBIxTest; 
use Moose; 
use Modern::Perl; 
use LaborData::Data::Schema; 
with 'DB', 'MooseX::Runnable'; 

sub run { 
    my ($self, $name) = @_; 
    say $name; 
}

但是，当我在命令行中运行

mx-run LaborData::Data::DBIxTest.pm hi

，我得到这个错误：

Attribute (class) does not pass the type constraint because: Validation failed for 'MooseX::Runnable::Invocation::RunnableClass' with value "LaborData::Data::DBIxTest.pm" at /usr/lib/x86_64-linux-gnu/perl5/5.20/Moose/Util.pm line 49 
    Moose::Util::throw_exception('ValidationFailedForTypeConstraint', 'type', 'MooseX::Types::TypeDecorator=HASH(0x38728e8)', 'value', 'LaborData::Data::DBIxTest.pm', 'attribute', 'Moose::Meta::Attribute=HASH(0x38bd4e8)') called at /usr/lib/x86_64-linux-gnu/perl5/5.20/Moose/Meta/Attribute.pm line 1265 
    Moose::Meta::Attribute::verify_against_type_constraint('Moose::Meta::Attribute=HASH(0x38bd4e8)', 'LaborData::Data::DBIxTest.pm', 'instance', 'MooseX::Runnable::Invocation::MxRun=HASH(0x38a13d8)') called at /usr/lib/x86_64-linux-gnu/perl5/5.20/Moose/Meta/Attribute.pm line 1252 
    Moose::Meta::Attribute::_coerce_and_verify('Moose::Meta::Attribute=HASH(0x38bd4e8)', 'LaborData::Data::DBIxTest.pm', 'MooseX::Runnable::Invocation::MxRun=HASH(0x38a13d8)') called at /usr/lib/x86_64-linux-gnu/perl5/5.20/Moose/Meta/Attribute.pm line 511 
    Moose::Meta::Attribute::initialize_instance_slot('Moose::Meta::Attribute=HASH(0x38bd4e8)', 'Moose::Meta::Instance=HASH(0x3881ad0)', 'MooseX::Runnable::Invocation::MxRun=HASH(0x38a13d8)', 'HASH(0x37fc528)') called at /usr/lib/x86_64-linux-gnu/perl5/5.20/Class/MOP/Class.pm line 524 
    Class::MOP::Class::_construct_instance('Moose::Meta::Class=HASH(0x3481260)', 'HASH(0x37fc528)') called at /usr/lib/x86_64-linux-gnu/perl5/5.20/Class/MOP/Class.pm line 494 
    Class::MOP::Class::new_object('Moose::Meta::Class=HASH(0x3481260)', 'HASH(0x37fc528)') called at /usr/lib/x86_64-linux-gnu/perl5/5.20/Moose/Meta/Class.pm line 274 
    Moose::Meta::Class::new_object('Moose::Meta::Class=HASH(0x3481260)', 'HASH(0x37fc528)') called at /usr/lib/x86_64-linux-gnu/perl5/5.20/Moose/Object.pm line 23 
    Moose::Object::new('MooseX::Runnable::Invocation::MxRun', 'class', 'LaborData::Data::DBIxTest.pm', 'plugins', 'HASH(0x387f1a0)', 'parsed_args', 'MooseX::Runnable::Util::ArgParser=HASH(0x3486408)') called at /usr/local/bin/mx-run line 28 
    main::run at /usr/local/bin/mx-run line 9

我可以从脚本无错地加载模块。我也可以使用technique found here.

来源

2017-02-09 StevieD

看起来像https://rt.cpan.org/Public/Bug/Display.html?id=58028 – ThisSuitIsBlackNot

该错误已修补，此外，我的模块名称将通过该正则表达式导致错误。所以事实证明，我实际上并没有尝试发出命令，但没有像我想的那样在包名后面加上'.pm'扩展名。一旦我删除它，它运行良好。 – StevieD

你说得对，那张票应该关闭！ – ThisSuitIsBlackNot

驼鹿错误信息可能很难破译程序运行得很好，但是这是关键部分：

Validation failed for 'MooseX::Runnable::Invocation::RunnableClass' with value "LaborData::Data::DBIxTest.pm"

LaborData::Data::DBIxTest.pm是不是一个有效的类名。您必须删除.pm，例如

sub _CLASS ($) { 
     (defined $_[0] and ! ref $_[0] and $_[0] =~ m/^[^\W\d]\w*(?:::\w+)*\z/s) ? $_[0] : undef; 
}

换句话说，一个或多个字母数字：

mx-run LaborData::Data::DBIxTest hi

如果你很好奇，有效的类名称由PARAMS ::的Util :: _ CLASS，它看起来像this确定字符，而不是以数字开头，并且可以用::分开。

来源

2017-02-09 17:03:06 ThisSuitIsBlackNot

是的，我以为我没有'.pm'运行它，但我其实没有。 – StevieD

为什么我得到“属性（类）没有通过类型约束，因为：验证失败'MooseX :: Runnable :: Invocation :: RunnableClass'”？

回答

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