This hook is triggered before copying child-object data, including batch copy. It allows extra business actions before copying, including but not limited to intercepting the copy action.

• Intercept copying child-object data

Parameters

Parameter	Description	Type
Common parameters	See details	--
objApiName	Child object apiName	String
recordType	Child object record type	String
copyRowIds	Row IDs of the child-object data being copied	Array

Return Value

None

Basic Example

Intercept copying child-object data

export default class Plugin {
    apply() {
        return [{
            event: 'md.copy.before',
            functional: this.mdCopyBefore.bind(this)
        }]
    }
  // If this is a middleware plugin in a vcrm project, swap the interaction parameter positions
   // mdCopyBefore(plugin, context)
  	mdCopyBefore(context, plugin) {
      	// todo what you want
    }
}

Notes

1. Child-object data obtained through context APIs in this hook does not include the newly copied data

When context APIs are used in this hook to get object data, the new copied data is not immediately reflected in the object data returned by the APIs.