Field dependencies problem

Need Help
#1

Hi! I’m trying to configure form field dependencies in my model, but I don’t know how to do it correctly.

I’ve got 3 fields:

linked_items:
    label: Use items from another post
    emptyOption: "-"
    type: dropdown
    options:
        1: Post with id 1
        3: Post with id 3
        4: Post with id 4
import_items:
    label: Load items of the selected post into this post
    type: switch
items:
    label: Items
    type: repeater
  1. If the linked_items field is empty, the import_items field should be disabled and its value changed to 0.
  2. If the linked_items field is not empty and the import_items field is checked, the items field value must be copied from the linked record to the current record.
  3. After import, the import_items field should be unchecked and disabled, and the value of the linked_items field should be set to empty option.
  4. The value of the import_items field should not be saved in the database (purgeable).

All of this should be executed dynamically, immediately after interaction with the fields. I tried using dependsOn and trigger, but it didn’t work. It created an infinite loop of refreshing fields.

Any idea how to do it correctly?

#2

Check out the changeHandler property, it can refer to an Ajax handler which can refresh the fields. It’s a low level solution but can be quite useful for more complex use cases.

Otherwise, an infinite loop suggests a circular dependency. The dependency flow ideally should be one-way (if possible).