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Subject cvs commit: cocoon-2.1/src/documentation/xdocs/userdocs/forms validation.xml
Date Fri, 28 May 2004 18:41:46 GMT
bruno       2004/05/28 11:41:45

  Modified:    src/documentation/xdocs/userdocs/forms validation.xml
  Extended information on validators.
  Revision  Changes    Path
  1.6       +21 -3     cocoon-2.1/src/documentation/xdocs/userdocs/forms/validation.xml
  Index: validation.xml
  RCS file: /home/cvs/cocoon-2.1/src/documentation/xdocs/userdocs/forms/validation.xml,v
  retrieving revision 1.5
  retrieving revision 1.6
  diff -u -r1.5 -r1.6
  --- validation.xml	14 May 2004 18:45:04 -0000	1.5
  +++ validation.xml	28 May 2004 18:41:45 -0000	1.6
  @@ -30,8 +30,26 @@
         fail, set a validation error on the widget.</p>
         <p>Implementation-wise, a widget validator is an object implementing
  -      the <code>WidgetValidator</code> interface. [insert javadoc link
  -      once those are published]</p>
  +      the <code>WidgetValidator</code> interface
  +      (<link href="">javadoc</link>).</p>
  +      <p>WidgetValidators can either be defined as part of the form definition
  +      (inside the <code>fd:validation</code> element) or added to a widget
  +      instance at runtime. The former is useful for validators that only act
  +      on the data in the form. The latter is useful if the validation logic
  +      needs access to other objects you have available in your controller.</p>
  +      <p>The validation logic runs over the widget tree. For each widget first
  +      the child widgets are validated and then the widget itself (recursively).
  +      The validators on a widget are executed in the order in which they were
  +      defined or added. First the ones defined in the form definition are executed, then
  +      the ones added on the widget instance. The validation of a widget stops at the
  +      first validator that fails (but continues to execute for the other widgets).</p>
  +      <p>For widgets having a datatype and hence a convertor (field and multivaluefield),
  +      the convertor could be considered to be the first validator, i.e. it is executed
  +      before the other validators (because those operate on the converted value).
  +      If the conversion fails a validation error is set on the widget.</p>
         <p>Validation errors can only be set on widgets implementing
         the interface <code>ValidationErrorAware</code>, which currently is not
  @@ -41,7 +59,7 @@
         different rows of the repeater, and set validation errors on these
         fields (instead of on the repeater itself).</p>
  -      <p>CForms supplies a number of widget validators, mostly for performing
  +      <p>CForms supplies a number of default widget validators, mostly for performing
         checks on the value of field widgets. Additionally you can write your
         own ones in Java or in Javascript.</p>

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