1DBIx::Class::InflateColUusmenr::CDoantterTiibmuet(e3d)PDeBrIlx:D:oCcluamsesn:t:aItnifolnateColumn::DateTime(3)
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NAME

6       DBIx::Class::InflateColumn::DateTime - Auto-create DateTime objects
7       from date and datetime columns.
8

SYNOPSIS

10       Load this component and then declare one or more columns to be of the
11       datetime, timestamp or date datatype.
12
13         package Event;
14         use base 'DBIx::Class::Core';
15
16         __PACKAGE__->load_components(qw/InflateColumn::DateTime/);
17         __PACKAGE__->add_columns(
18           starts_when => { data_type => 'datetime' }
19           create_date => { data_type => 'date' }
20         );
21
22       Then you can treat the specified column as a DateTime object.
23
24         print "This event starts the month of ".
25           $event->starts_when->month_name();
26
27       If you want to set a specific timezone and locale for that field, use:
28
29         __PACKAGE__->add_columns(
30           starts_when => { data_type => 'datetime', timezone => "America/Chicago", locale => "de_DE" }
31         );
32
33       If you want to inflate no matter what data_type your column is, use
34       inflate_datetime or inflate_date:
35
36         __PACKAGE__->add_columns(
37           starts_when => { data_type => 'varchar', inflate_datetime => 1 }
38         );
39
40         __PACKAGE__->add_columns(
41           starts_when => { data_type => 'varchar', inflate_date => 1 }
42         );
43
44       It's also possible to explicitly skip inflation:
45
46         __PACKAGE__->add_columns(
47           starts_when => { data_type => 'datetime', inflate_datetime => 0 }
48         );
49
50       NOTE: Don't rely on "InflateColumn::DateTime" to parse date strings for
51       you.  The column is set directly for any non-references and
52       "InflateColumn::DateTime" is completely bypassed.  Instead, use an
53       input parser to create a DateTime object. For instance, if your user
54       input comes as a 'YYYY-MM-DD' string, you can use
55       "DateTime::Format::ISO8601" thusly:
56
57         use DateTime::Format::ISO8601;
58         my $dt = DateTime::Format::ISO8601->parse_datetime('YYYY-MM-DD');
59

DESCRIPTION

61       This module figures out the type of DateTime::Format::* class to
62       inflate/deflate with based on the type of DBIx::Class::Storage::DBI::*
63       that you are using.  If you switch from one database to a different one
64       your code should continue to work without modification (though note
65       that this feature is new as of 0.07, so it may not be perfect yet - bug
66       reports to the list very much welcome).
67
68       If the data_type of a field is "date", "datetime" or "timestamp" (or a
69       derivative of these datatypes, e.g. "timestamp with timezone"), this
70       module will automatically call the appropriate parse/format method for
71       deflation/inflation as defined in the storage class. For instance, for
72       a "datetime" field the methods "parse_datetime" and "format_datetime"
73       would be called on deflation/inflation. If the storage class does not
74       provide a specialized inflator/deflator, "[parse|format]_datetime" will
75       be used as a fallback. See "Formatters And Stringification" in DateTime
76       for more information on date formatting.
77
78       For more help with using components, see "USING" in
79       DBIx::Class::Manual::Component.
80
81   register_column
82       Chains with the "register_column" in DBIx::Class::Row method, and sets
83       up datetime columns appropriately.  This would not normally be directly
84       called by end users.
85
86       In the case of an invalid date, DateTime will throw an exception.  To
87       bypass these exceptions and just have the inflation return undef, use
88       the "datetime_undef_if_invalid" option in the column info:
89
90           "broken_date",
91           {
92               data_type => "datetime",
93               default_value => '0000-00-00',
94               is_nullable => 1,
95               datetime_undef_if_invalid => 1
96           }
97

USAGE NOTES

99       If you have a datetime column with an associated "timezone", and
100       subsequently create/update this column with a DateTime object in the
101       DateTime::TimeZone::Floating timezone, you will get a warning (as there
102       is a very good chance this will not have the result you expect). For
103       example:
104
105         __PACKAGE__->add_columns(
106           starts_when => { data_type => 'datetime', timezone => "America/Chicago" }
107         );
108
109         my $event = $schema->resultset('EventTZ')->create({
110           starts_at => DateTime->new(year=>2007, month=>12, day=>31, ),
111         });
112
113       The warning can be avoided in several ways:
114
115       Fix your broken code
116           When calling "set_time_zone" on a Floating DateTime object, the
117           timezone is simply set to the requested value, and no time
118           conversion takes place. It is always a good idea to be supply
119           explicit times to the database:
120
121             my $event = $schema->resultset('EventTZ')->create({
122               starts_at => DateTime->new(year=>2007, month=>12, day=>31, time_zone => "America/Chicago" ),
123             });
124
125       Suppress the check on per-column basis
126             __PACKAGE__->add_columns(
127               starts_when => { data_type => 'datetime', timezone => "America/Chicago", floating_tz_ok => 1 }
128             );
129
130       Suppress the check globally
131           Set the environment variable DBIC_FLOATING_TZ_OK to some true
132           value.
133
134       Putting extra attributes like timezone, locale or floating_tz_ok into
135       extra => {} has been DEPRECATED because this gets you into trouble
136       using DBIx::Class::Schema::Versioned.  Instead put it directly into the
137       columns definition like in the examples above. If you still use the old
138       way you'll see a warning - please fix your code then!
139

SEE ALSO

141       More information about the add_columns method, and column metadata, can
142       be found in the documentation for DBIx::Class::ResultSource.
143       Further discussion of problems inherent to the Floating timezone:
144       Floating DateTimes and $dt->set_time_zone
145

FURTHER QUESTIONS?

147       Check the list of additional DBIC resources.
148
150       This module is free software copyright by the DBIx::Class (DBIC)
151       authors. You can redistribute it and/or modify it under the same terms
152       as the DBIx::Class library.
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156perl v5.32.0                      2020-0D7B-I2x8::Class::InflateColumn::DateTime(3)
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