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Package TWiki::Form

Object representing a single form definition.

ClassMethod new ($session,$web,$form)

  • $web - default web to recover form from, if $form doesn't specify a web
  • $form - topic name to read form definition from

May throw TWiki::OopsException

ObjectMethod renderForEdit ($web,$topic,$meta,$useDefaults) -> $html

  • $web the web of the topic being rendered
  • $topic the topic being rendered
  • $meta the meta data for the form
  • $useDefaults if true, will use default values from the form definition if no other value is given

Render the form fields for entry during an edit session, using data values from $meta

ObjectMethod renderFieldForEdit ($fieldDef,$web,$topic,$value) -> $html

  • $fieldDef the field being rendered
  • $web the web of the topic being rendered
  • $topic the topic being rendered
  • $value the current value of the field

Render a single form field for entry during an edit session, using data values from $meta. Plugins can provide a handler that extends the set of supported types

SMELL: this should be a method on a field class SMELL: JSCalendarContrib ought to provide a 'date' handler.

ObjectMethod renderHidden ($meta,$useDefaults) -> $html

  • $useDefaults if true, will use default values from the form definition if no other value is given

Render form fields found in the meta as hidden inputs, so they pass through edits untouched.

ObjectMethod cgiName ($field) -> $string

Generate the 'name' of the CGI parameter used to represent a field.

ObjectMethod getFieldValuesFromQuery ($query,$metaObject,$initialiseMissing) -> ($seen,\@missing)

Extract new values for form fields from a query.
  • $query - the query
  • $metaObject - the meta object that is storing the form values
  • $initialiseMissing - if true, will cause fields that are in the form but have no value in the query or in the meta to be initialised to ''.

For each field, if there is a value in the query, use it. Otherwise if there is already entry for the field in the meta, keep it.

Returns the number of fields which had values provided by the query, and a references to an array of the names of mandatory fields that were missing from the query.

ObjectMethod isTextMergeable ($name) -> $boolean

  • $name - name of a form field (value of the name attribute)
Returns true if the type of the named field allows it to be text-merged.

If the form does not define the field, it is assumed to be mergeable.

ObjectMethod getField ($name) -> \%row

  • $name - name of a form field (value of the name attribute)
Returns the field, or undef if the form does not define the field.

StaticMethod renderForDisplay ($templates,$meta)

  • $templates ref to templates singleton
  • $meta - meta object containing the form to be rendered
Static because we want to be able to do this without a form definition.

SMELL: Why? Is reading the form topic such a big burden?



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Topic revision: r3 - 2006-05-01 - PeterThoeny
 
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