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| <title>Cocoon Forms: multivaluefield widget</title> |
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| |
| <h1>Concept</h1> |
| |
| <p>The fd:multivaluefield is similar to the |
| <a href="widget_field.html">field widget</a> but |
| can take multiple values. Its purpose is to handle those (HTML) form |
| controls which submit their multiple values as multiple (HTTP) request parameters |
| with the same name. A multivaluefield should always have |
| an fd:datatype element combined with a fd:selection-list, since |
| the user will have to select values from this list.</p> |
| |
| |
| <p>The fd:multivaluefield could be rendered as a list of checkboxes |
| or as a listbox in which the user can select multiple items. |
| The CForms stylesheets also include a styling option to render |
| them as a "double list", i.e. a list of available and selected |
| values.</p> |
| |
| |
| <p>The setValue and getValue methods of the multivaluefield take |
| respectively return arrays of objects (i.e. Object[]). The type |
| of the objects in these arrays should match the datatype declared |
| for the widget.</p> |
| |
| |
| |
| <h1>Configuration</h1> |
| |
| |
| <pre class="code"><fd:multivaluefield id="..."> |
| <fd:label>...</fd:label> |
| <fd:help>...</fd:help> |
| <fd:hint>...</fd:hint> |
| <fd:datatype base="..."> |
| [...] |
| </fd:datatype> |
| <fd:selection-list> |
| [...] |
| </fd:selection-list> |
| <fd:validation> |
| [...] |
| </fd:validation> |
| <fd:on-value-changed> |
| [...] |
| </fd:on-value-changed> |
| </fd:multivaluefield></pre> |
| |
| |
| <p>Most of the elements and attributes have the same meaning |
| as for the <a href="widget_field.html">field</a> widget.</p> |
| |
| |
| <p>Note: A multivaluefield cannot have a required attribute, |
| instead you should use the value-count validator to |
| check the number of values the user has selected.</p> |
| |
| |
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