1Workflow::Validator::HaUssReerquCiornetdrFiibeultde(d3W)PoerrklflDoowc:u:mVeanltiadtaitoonr::HasRequiredField(3)
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NAME

6       Workflow::Validator::HasRequiredField - Validator to ensure certain
7       data are in the context
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SYNOPSIS

10        # Validator is created automatically when you mark a field as
11        # 'is_required=yes' in the action, such as:
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13        <action name="CreateUser">
14           <field name="username"
15                  is_required="yes"
16                  source_class="App::Fied::ValidUsers"/>
17           ...
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DESCRIPTION

20       This is a simple validator to ensure that each of the fields you have
21       marked with the 'is_required' property as 'yes' are indeed present
22       before the associated action is executed.
23
24       for instance, given the configuration:
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26        <action name="CreateUser">
27           <field name="username"
28                  is_required="yes"/>
29           <field name="email"
30                  is_required="yes"/>
31           <field name="office">
32        </action>
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34       An action executed with such a context:
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36        my $wf = FACTORY->get_workflow( $id );
37        $wf->context( username => 'foo' );
38        $wf->context( office => 'Ottumwa' );
39        $wf->execute_action( 'CreateUser' );
40
41       Would fail with a message:
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43        The following fields require a value: email
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45       You normally do not need to configure this validator yourself. It gets
46       generated automatically when the Action configration is read in. How‐
47       ever, if you do need to create it yourself:
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49        <action name='Foo'>
50           <validator name="HasRequiredField">
51              <arg value="fieldOne"/>
52              <arg value="field_two"/>
53           </validator>
54        <?action>
55
56       Note that we do not try to match the value in the context against a set
57       of known values or algorithm, just see if the value is defined -- using
58       the Perl notion for defined rather than true/false, which means '0' and
59       the empty string will both be valid.
60
61       METHODS
62
63       #=head3 validate
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66       Copyright (c) 2003-2004 Chris Winters. All rights reserved.
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68       This library is free software; you can redistribute it and/or modify it
69       under the same terms as Perl itself.
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AUTHORS

72       Chris Winters <chris@cwinters.com>
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76perl v5.8.8                       2007-W0o4r-k2f5low::Validator::HasRequiredField(3)
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