1DBIx::Class::UTF8ColumnUss(e3r)Contributed Perl DocumentDaBtIixo:n:Class::UTF8Columns(3)
2
3
4

NAME

6       DBIx::Class::UTF8Columns - Force UTF8 (Unicode) flag on columns
7       (DEPRECATED)
8

SYNOPSIS

10           package Artist;
11           use base 'DBIx::Class::Core';
12
13           __PACKAGE__->load_components(qw/UTF8Columns/);
14           __PACKAGE__->utf8_columns(qw/name description/);
15
16           # then belows return strings with utf8 flag
17           $artist->name;
18           $artist->get_column('description');
19

DESCRIPTION

21       This module allows you to get and store utf8 (unicode) column data in a
22       database that does not natively support unicode. It ensures that column
23       data is correctly serialised as a byte stream when stored and de-
24       serialised to unicode strings on retrieval.
25
26         THE USE OF THIS MODULE (AND ITS COUSIN DBIx::Class::ForceUTF8) IS VERY
27         STRONGLY DISCOURAGED, PLEASE READ THE WARNINGS BELOW FOR AN EXPLANATION.
28
29       If you want to continue using this module and do not want to receive
30       further warnings set the environment variable "DBIC_UTF8COLUMNS_OK" to
31       a true value.
32
33   Warning - Module does not function properly on create/insert
34       Recently (April 2010) a bug was found deep in the core of DBIx::Class
35       which affects any component attempting to perform encoding/decoding by
36       overloading store_column and get_columns. As a result of this problem
37       create sends the original column values to the database, while update
38       sends the encoded values. DBIx::Class::UTF8Columns and
39       DBIx::Class::ForceUTF8 are both affected by this bug.
40
41       It is unclear how this bug went undetected for so long (it was
42       introduced in March 2006), No attempts to fix it will be made while the
43       implications of changing such a fundamental behavior of DBIx::Class are
44       being evaluated. However in this day and age you should not be using
45       this module anyway as Unicode is properly supported by all major
46       database engines, as explained below.
47
48       If you have specific questions about the integrity of your data in
49       light of this development - please join us on IRC or the mailing list
50       to further discuss your concerns with the team.
51
52   Warning - Native Database Unicode Support
53       If your database natively supports Unicode (as does SQLite with the
54       "sqlite_unicode" connect flag, MySQL with "mysql_enable_utf8" connect
55       flag or Postgres with the "pg_enable_utf8" connect flag), then this
56       component should not be used, and will corrupt unicode data in a subtle
57       and unexpected manner.
58
59       It is far better to do Unicode support within the database if possible
60       rather than converting data to and from raw bytes on every database
61       round trip.
62
63   Warning - Component Overloading
64       Note that this module overloads "store_column" in DBIx::Class::Row in a
65       way that may prevent other components overloading the same method from
66       working correctly. This component must be the last one before
67       DBIx::Class::Row (which is provided by DBIx::Class::Core). DBIx::Class
68       will detect such incorrect component order and issue an appropriate
69       warning, advising which components need to be loaded differently.
70

SEE ALSO

72       Template::Stash::ForceUTF8, DBIx::Class::UUIDColumns.
73

METHODS

75   utf8_columns

EXTENDED METHODS

77   get_column
78   get_columns
79   store_column

FURTHER QUESTIONS?

81       Check the list of additional DBIC resources.
82

84       This module is free software copyright by the DBIx::Class (DBIC)
85       authors. You can redistribute it and/or modify it under the same terms
86       as the DBIx::Class library.
87
88
89
90perl v5.32.0                      2020-07-28       DBIx::Class::UTF8Columns(3)
Impressum