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.IX Title "DBIx::Class::Helper::Schema::Verifier 3pm"
.TH DBIx::Class::Helper::Schema::Verifier 3pm "2022-12-06" "perl v5.36.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
DBIx::Class::Helper::Schema::Verifier \- Verify the Results and ResultSets of your Schemata
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& package MyApp::Schema;
\&
\& _\|_PACKAGE_\|_\->load_components(\*(AqHelper::Schema::Verifier\*(Aq);
\&
\& sub result_verifiers {
\&   (
\&      sub {
\&         my ($self, $result, $set) = @_;
\&
\&         for ($result, $set) {
\&            die "$_ does not start with the letter A" unless m/^A/
\&         }
\&      },
\&      shift\->next::method,
\&   )
\& }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\f(CW\*(C`DBIx::Class::Helper::Schema::Verifier\*(C'\fR is a minuscule framework to assist in
creating schemata that are to your very own exacting specifications.  It is
inspired by my own travails in discovering that \f(CW\*(C`use mro \*(Aqc3\*(Aq\*(C'\fR is both
required and barely documented in much Perl code.  As time goes by I expect to
add many more verifiers, but with this inaugural release I am merely including
DBIx::Class::Helper::Schema::Verifier::C3.
.SH "INTERFACE METHODS"
.IX Header "INTERFACE METHODS"
.SS "result_verifiers"
.IX Subsection "result_verifiers"
You must implement \f(CW\*(C`result_verifiers\*(C'\fR in your subclass of \f(CW\*(C`::Verifier\*(C'\fR.  Each
verifier gets called on the schema and gets each result and resultset together
as arguments.  You can use this to validate almost anything about the results
and resultsets of a schema; contributions are warmly welcomed.
.SH "MORE ERRORS"
.IX Header "MORE ERRORS"
Initially I kept this module simple, but after using it in production at
ZipRecruiter <https://www.ziprecruiter.com> I found that showing the user the
first error that occurred and then giving up was pretty annoying.  Now
\&\f(CW\*(C`Schema::Verifier\*(C'\fR wraps both \*(L"load_namespaces\*(R" in DBIx::Class::Schema and
\&\*(L"load_classes\*(R" in DBIx::Class::Schema and shows all the exceptions encoutered as a
list at the end of loading all the results.
.SH "AUTHOR"
.IX Header "AUTHOR"
Arthur Axel \*(L"fREW\*(R" Schmidt <frioux+cpan@gmail.com>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is copyright (c) 2020 by Arthur Axel \*(L"fREW\*(R" Schmidt.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.