dw.web
Class FormGroup
The class is the central class within the whole form handling. It is
the container element for fields and other form elements. A form group
can contain other forms, also called sub-forms.
Access to the elements of a form is provided via an index based access or
via an associative array access. For example, the field "firstname" can be accessed
with the expression "myform.firstname".
All Known Subclasses
Properties
childCount
:
Number
(Read Only)
The number of elements in the form.
error
:
String
(Read Only)
A form-wide error message. If no error message
is present the method returns null.
object
:
Object
(Read Only)
The object that was bound to this form group.
submittedAction
:
FormAction
(Read Only)
The action that was submitted with the last request. The action is
set independent whether the form must be valid for this action. The method
returns null if no action at all was submitted with the last request for this
form group.
triggeredAction
:
FormAction
(Read Only)
The action that was triggered with the last request. An action is
only marked as triggered if the constraints regarding form validation are
meet. The method returns null if no action was marked as triggered.
Constructor Summary
This class does not have a constructor, so you cannot create it directly.
To get an instance of this class, use one of the subclass constructors.
Method Summary
accept()
:
void
The method copies the value from a form into the object, which was previously bound to the form.
copyFrom(obj
:
Object)
:
void
The method updates the form with the values from the given object.
The method call is basically equivalent to the pipelet UpdateFormWithObject.
The method not only copies the value, it also binds the object to the form.
The method call is basically equivalent to the pipelet UpdateFormWithObject.
The method not only copies the value, it also binds the object to the form.
copyTo(obj
:
Object)
:
void
The method updates the object with the values from the form.
The method call is basically equivalent to the pipelet UpdateObjectWithForm.
The method needs a submitted form.
The method call is basically equivalent to the pipelet UpdateObjectWithForm.
The method needs a submitted form.
getChildCount()
:
Number
Returns the number of elements in the form.
getSubmittedAction()
:
FormAction
Returns the action that was submitted with the last request.
getTriggeredAction()
:
FormAction
Returns the action that was triggered with the last request.
Methods inherited from class
FormElement
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Methods inherited from class
Object
assign, create, create, defineProperties, defineProperty, entries, freeze, fromEntries, getOwnPropertyDescriptor, getOwnPropertyNames, getOwnPropertySymbols, getPrototypeOf, hasOwnProperty, is, isExtensible, isFrozen, isPrototypeOf, isSealed, keys, preventExtensions, propertyIsEnumerable, seal, setPrototypeOf, toLocaleString, toString, valueOf, values
Method Detail
accept
accept()
:
void
The method copies the value from a form into the object, which was previously
bound to the form. The method is equivalent to the pipelet AcceptForm.
This method is equivalent to the call formgroup.copyFrom( formgroup.object ).
copyFrom
copyFrom(obj
:
Object)
:
void
The method updates the form with the values from the given object.
The method call is basically equivalent to the pipelet UpdateFormWithObject.
The method not only copies the value, it also binds the object to the form. Binding means that the form keeps the information from which objects the values were taken. This can be used for two purposes:
The method call is basically equivalent to the pipelet UpdateFormWithObject.
The method not only copies the value, it also binds the object to the form. Binding means that the form keeps the information from which objects the values were taken. This can be used for two purposes:
- for lists it makes it easier in the code to find the associated object, for example in case of a related action, and
- it allows to copy back the values from the form into the object (see accept()).
Parameters:
obj
-
the object from, which the values are read
copyTo
copyTo(obj
:
Object)
:
void
The method updates the object with the values from the form.
The method call is basically equivalent to the pipelet UpdateObjectWithForm.
The method needs a submitted form. The copyTo call is delegated to the form fields. Each form field than checks if its value was submitted as part of the form:
The method call is basically equivalent to the pipelet UpdateObjectWithForm.
The method needs a submitted form. The copyTo call is delegated to the form fields. Each form field than checks if its value was submitted as part of the form:
- If this is true, the object gets updated with the form field value.
- If this is false, the object will not be updated.
Parameters:
obj
-
the object, which is updated from the form
getChildCount
getChildCount()
:
Number
Returns the number of elements in the form.
Returns:
the number of elements in the form.
getError
getError()
:
String
Returns a form-wide error message. If no error message
is present the method returns null.
Returns:
a form-wide error message or null.
getObject
getObject()
:
Object
The object that was bound to this form group.
Returns:
the bound object.
getSubmittedAction
getSubmittedAction()
:
FormAction
Returns the action that was submitted with the last request. The action is
set independent whether the form must be valid for this action. The method
returns null if no action at all was submitted with the last request for this
form group.
Returns:
the action that was submitted with the last request or null.
getTriggeredAction
getTriggeredAction()
:
FormAction
Returns the action that was triggered with the last request. An action is
only marked as triggered if the constraints regarding form validation are
meet. The method returns null if no action was marked as triggered.
Returns:
the action that was triggered with the last request.
