1DBIx::Class::IntrospectUasbelreMC2oMn(t3r)ibuted Perl DoDcBuImxe:n:tCaltaisosn::IntrospectableM2M(3)
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NAME

6       DBIx::Class::IntrospectableM2M - Introspect many-to-many shortcuts
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SYNOPSIS

9       In your DBIx::Class Result class (sometimes erroneously referred to as
10       the 'table' class):
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12         __PACKAGE__->load_components(qw/IntrospectableM2M ... Core/);
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14         #Digest encoder with hex format and SHA-1 algorithm
15         __PACKAGE__->many_to_many(roles => user_roles => 'role);
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17       When you want to introspect this data
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19          my $metadata = $result_class->_m2m_metadata->{roles};
20          #  $metadata->{accessor} method name e.g. 'roles'
21          #  $metadata->{relation} maping relation e.g. 'user_roles'
22          #  $metadata->{foreign_relation} far-side relation e.g. 'role
23          #  $metadata->{attrs}  relationship attributes, if any
24          # Convenience methods created by DBIx::Class
25          #  $metadata->{rs_method}     'roles_rs'
26          #  $metadata->{add_method}    'add_to_roles',
27          #  $metadata->{set_method}    'set_roles',
28          #  $metadata->{remove_method} 'remove_from_roles'
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30       Note: The component needs to be loaded before Core.
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COMPATIBILITY NOTICE

33       This module is fairly esoteric and, unless you are dynamically creating
34       something out of a DBIC Schema, is probably the wrong solution for
35       whatever it is you are trying to do. Please be advised that
36       compatibility is not guaranteed for DBIx::Class 0.09000+. We will try
37       to manitain all compatibility, but internal changes might make it
38       impossible.
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DESCRIPTION

41       Because the many-to-many relationships are not real relationships, they
42       can not be introspected with DBIx::Class. Many-to-many relationships
43       are actually just a collection of convenience methods installed to
44       bridge two relationships.  This DBIx::Class component can be used to
45       store all relevant information about these non-relationships so they
46       can later be introspected and examined.
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METHODS

49   many_to_many
50       Extended to store all relevant information in the "_m2m_metadata" HASH
51       ref.
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53   _m2m_metadata
54       Accessor to a HASH ref where the keys are the names of m2m
55       relationships and the value is a HASH ref as described in the SYNOPSIS.
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AUTHOR

58       Guillermo Roditi (groditi) <groditi@cpan.org>
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61       Copyright (C) 2008 by Guillermo Roditi
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63       This library is free software; you can redistribute it and/or modify it
64       under the same terms as Perl itself.
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68perl v5.34.0                      2022-01-21 DBIx::Class::IntrospectableM2M(3)
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