The bind element
Release 2.0 - ...
Element bind selects a node-set from the instance data with either a model binding expression in the nodeset attribute or the default of the in-scope evaluation context node.
Other attributes on element bind encode model item properties to be applied to each node in the node-set. When bind has an id attribute of type xsd:ID, the bind then associates that identifier with the selected node-set.
Example
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<xf:bind nodeset="node()[@required='true']" required="true()" /> <xf:bind nodeset="a:State" relevant="//a:Country = 'USA'" /> <xf:bind nodeset="a:City" calculate="if(substring(//a:Zip, 1, 2)='26', 'Delft', '')" /> <xf:bind nodeset="a:City" readonly="false()" /> |
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Attributes
| Name | Required / optional | Description |
|---|---|---|
| nodeset | optional | Contains a model binding expression that selects the set of nodes on which this bind operates. If the attribute is omitted, the default is the in-scope evaluation context node. |
| Common Attributes | optional | Any attribute from the Common Attributes collection (e.g. id). |
| Model Item Properties | optional | Any model item property (calculate, type, required, constraint, relevant, readonly, p3ptype). |
Content
Within an bind element, the following child elements are allowed:
| Element Name | Required / optional | Description |
|---|---|---|
| bind | optional | Bind elements can be nested. |
Specification
Link to the XForms specification: the bind element.