Types::DateTime(3pm)

1Types::DateTime(3)    User Contributed Perl Documentation   Types::DateTime(3)
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NAME

6       Types::DateTime - type constraints and coercions for datetime objects
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SYNOPSIS

9          package FroobleGala;
10
11          use Moose;
12          use Types::DateTime -all;
13
14          has start_date => (
15             is      => 'ro',
16             isa     => DateTimeUTC->plus_coercions( Format['ISO8601'] ),
17             coerce  => 1,
18          );
19

DESCRIPTION

21       Types::DateTime is a type constraint library suitable for use with
22       Moo/Moose attributes, Kavorka sub signatures, and so forth.
23
24   Types
25       This module provides some type constraints broadly compatible with
26       those provided by MooseX::Types::DateTime, plus a couple of extra type
27       constraints.
28
29       "DateTime"
30           A class type for DateTime. Coercions from:
31
32           from "Num"
33               Uses "from_epoch" in DateTime. Floating values will be used for
34               sub-second precision, see DateTime for details.
35
36           from "HashRef"
37               Calls "new" in DateTime or "from_epoch" in DateTime as
38               appropriate, passing the hash as arguments.
39
40           from "Now"
41               Uses "now" in DateTime.
42
43           from "InstanceOf['DateTime::Tiny']"
44               Inflated using "DateTime" in DateTime::Tiny.
45
46       "Duration"
47           A class type for DateTime::Duration. Coercions from:
48
49           from "Num"
50               Uses "new" in DateTime::Duration and passes the number as the
51               "seconds" argument.
52
53           from "HashRef"
54               Calls "new" in DateTime::Duration with the hash entries as
55               arguments.
56
57       "Locale"
58           A class type for DateTime::Locale. Coercions from:
59
60           from "Str"
61               The string is treated as a language tag (e.g. "en" or "he_IL")
62               and given to "load" in DateTime::Locale.
63
64           from "InstanceOf['Locale::Maketext']"
65               The "Locale::Maketext/language_tag" attribute will be used with
66               "load" in DateTime::Locale.
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68       "TimeZone"
69           A class type for DateTime::TimeZone. Coercions from:
70
71           from "Str"
72               Treated as a time zone name or offset. See "USAGE" in
73               DateTime::TimeZone for more details on the allowed values.
74
75               Delegates to "new" in DateTime::TimeZone with the string as the
76               "name" argument.
77
78       "Now"
79           Type constraint with only one allowed value, the string "now".
80
81           This is exported for compatibility with MooseX::Types::DateTime,
82           which exports such a constraint, even though it is not documented.
83
84       "DateTimeWithZone"
85           A subtype of "DateTime" for objects with a defined (non-floating)
86           time zone.
87
88           This type constraint inherits its coercions from "DateTime".
89
90       "DateTimeWithZone[`a]"
91           The "DateTimeWithZone" type constraint may be parameterized with a
92           DateTime::TimeZone object, or a string that can be coerced into
93           one.
94
95              has start_date => (
96                 is      => 'ro',
97                 isa     => DateTimeWithZone['Europe/London'],
98                 coerce  => 1,
99              );
100
101           This type constraint inherits its coercions from "DateTime", and
102           will additionally call "set_time_zone" in DateTime to shift objects
103           into the correct timezone.
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105       "DateTimeUTC"
106           Shortcut for "DateTimeWithZone["UTC"]".
107
108   Named Coercions
109       It is hoped that Type::Tiny will help avoid the proliferation of
110       modules like MooseX::Types::DateTimeX,
111       MooseX::Types::DateTime::ButMaintained, and
112       MooseX::Types::DateTime::MoreCoercions. It makes it very easy to add
113       coercions to a type constraint at the point of use:
114
115          has start_date => (
116             is      => 'ro',
117             isa     => DateTime->plus_coercions(
118                InstanceOf['MyApp::DT'] => sub { $_->to_DateTime }
119             ),
120             coerce  => 1,
121          );
122
123       Even easier, this module exports some named coercions.
124
125       "Format[`a]"
126           May be passed an object providing a "parse_datetime" method, or a
127           class name from the "DateTime::Format::" namespace (upon which
128           "new" will be called).
129
130           For example:
131
132              DateTime->plus_coercions( Format['ISO8601'] )
133
134           Or:
135
136              DateTimeUTC->plus_coercions(
137                 Format[
138                    DateTime::Format::Natural->new(lang => 'en')
139                 ]
140              )
141
142       "Strftime[`a]"
143           A pattern for serializing a DateTime object into a string using
144           "strftime" in DateTime.
145
146              Str->plus_coercions( Strftime['%a %e %b %Y'] );
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148       "ToISO8601"
149           A coercion for serializing a DateTime object into a string using
150           "iso8601" in DateTime.
151
152              Str->plus_coercions( ToISO8601 );
153

BUGS

155       Please report any bugs to
156       <http://rt.cpan.org/Dist/Display.html?Queue=Types-DateTime>.
157

AUTHOR

163       Toby Inkster <tobyink@cpan.org>.
164

COPYRIGHT AND LICENCE

166       This software is copyright (c) 2014, 2017 by Toby Inkster.
167
168       This is free software; you can redistribute it and/or modify it under
169       the same terms as the Perl 5 programming language system itself.
170

DISCLAIMER OF WARRANTIES

172       THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
173       WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
174       MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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178perl v5.30.1                      2020-01-30                Types::DateTime(3)