What are the Properties of XForms?

[Rob Dizzle]

Hi friends,
I am new to the XForms. I don't know much about the XForms. I want to know about the properties so that I can know the data restrictions and its types. So I thought to post here, because last time you really explained me neatly. So please explain me what are the Properties of XForms? Any other information related to the topic would be appreciated.!!

[Deabelos]

XForms uses properties to define data restrictions, types and behaviors. The following are some examples that can explain you more clearly.

• When you make the required="true()" property, that means that the input field is required. You cannot keep that empty on submit.
• A type="decimal" property will only allow a decimal value to be submitted. You can't enter any other value.
• A calculate property can calculate a value.

[kyosang]

You can use the bind element to bind XForms properties to XForms data, since this is one feature of the XForms. In the example described below, the <bind nodeset="person/lname" required="true()"> specifies that the lname input field is required :

<model>
  <instance>
    <person>
      <fname/>
      <lname/>
    </person>
  </instance>
  <bind nodeset="person/lname" required="true()"/>
</model>

[Solitario]

The following are some reference of the XForms Properties :

• calculate - This property defines a calculation to be performed on the item.
• constraint - This property defines a constraint for the item.
• p3ptype - This property defines a P3P data type for the item.

Model item property is the somewhat unwieldy name XForms gives to XPath nodes that have additional XForms properties. XForms defines a number of such properties that, through the flexibility of XPath, can be applied readily to the instance data.

[MELTRONICS]

An XForms 1.0 defines these following useful properties :

• A required - This property is required when you set the value to true. the signals that the attached instance of data should not be blank.
• A relevant - This property defines the controls are attached instance of data is relevant or not.
• readonly - This property defines an edit restriction for the item.
• relevant - This property defines how relevant the data is.!
• type - This property defines the data type for the item.