Sure, here are some best practices to tackle complex, dynamic forms with multiple UI Policies defined on the same variables:
1. **UI Policies Order**: The order of UI Policies does matter. The lower the order, the higher the priority. If you have multiple UI Policies acting on the same field, ensure they are ordered correctly.
2. **UI Policy Conditions**: Make sure your UI Policy conditions are not conflicting with each other. If two UI Policies have opposite actions on the same field, it can cause inconsistent behavior.
3. **Use of Scripts**: If your form is very complex, consider using client scripts instead of UI Policies. Client scripts provide more flexibility and control over form behavior.
4. **Group Related Fields**: Group related fields into sections or tabs. This can help manage the visibility and mandatory state of fields more effectively.
5. **Use of Catalog Client Scripts**: For service catalog items, use catalog client scripts to control the behavior of variables based on user selection.
6. **Use of GlideForm (g_form) API**: The GlideForm (g_form) API provides methods to control form fields. You can use these methods in your client scripts to control the behavior of your form fields.
7. **Testing**: Always test your form behavior thoroughly. Make sure all UI Policies and client scripts are working as expected.
8. **Documentation**: Document your form behavior and the logic behind it. This can help you and others understand the form behavior better.
Here is a sample code for a client script that makes a field mandatory based on user selection:
javascript
function onChange(control, oldValue, newValue, isLoading) {
if (isLoading) {
return;
}
if (newValue == 'some_value') {
g_form.setMandatory('field_name', true);
} else {
g_form.setMandatory('field_name', false);
}
}
In this script, replace 'some_value' with the value that should make the field mandatory, and 'field_name' with the name of your field.
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