Skip to main content
Version: 10.5

DataControl

Example
<div
    id="data_control_test"
    data-hf-control="DataControl"
    data-hf-options="{
        defaultValue: {
            testEntry: 'test'
        },
        onChanged: HFFormdefinition.Namespace.Method
    }"
></div>
Note

The DataControl is a hidden control that can be used to store data in the Form. The data is stored in the Form as a JSON string.

FormControl Options​

defaultValue​

Provide a default object for the control. A Custom Code function can be used to set defaultValue.
How to use:
defaultValue: { testEntry: 'testValue' }
Type: object | function
Signature: function() => object

doNotCopy​

Set "true" whenever the field should be cleared if the Form is copied.
How to use:
doNotCopy: true
Type: boolean

onChanged​

Call a pre-defined JS-method to do something when the status of the control changes.
How to use:
onChanged: HFFormdefinition.Namespace.Method
Type: function
Signature: function(value: object) => void

persistent​

It is the value where the "user" sets the initial value of the DataControl to the value of the previous Form item of the current user and overwrites any defaultValue.
How to use:
persistent: 'user'
Type: 'user'

copyValueFrom​

Define a FormControl that synchronizes its value with the current field. This synchronization process occurs upon navigating to the page where the current control is situated. It only occurs if the field is empty or the mode is set to "overwrite".

<div
    id="data_control_test"
    data-hf-control="DataControl"
    data-hf-options="{
    copyValueFrom: 'data_control_test_copy'
}"
></div>
Option interface
interface ICopyValueFromObject {
    sourceId: string;
    mode: 'overwrite' | null;
    callback: (value: string) => string;
}

type CopyValueFromType = string | ICopyValueFromObject;

callback​

Specify a function to process value before copy.
How to use:
callback: HFFormDefinition.Namespace.processValue
Type: function
Signature: function(value: string) => string

mode​

Specify if target field gets overwritten. Default behaviour is to only copy to empty fields.
How to use:
mode: 'overwrite'
Type: string

sourceId​

Specify source id
How to use:
sourceId: 'target_id'
Type: string

Stored data

​

The simplest storage – ID and the filled-in stringified value:

{
    "id": "data_control_test",
    "value": "{\"testEntry\":\"test\"}"
}