Event Pipeline: The even pipeline allows you to configure when in the event the plug-in code will execute. There are 3 Event Pipeline stages namely, Pre-Validation, Pre-Operation, and Post-Operation.
Pre-Validation: In the pre-validation stage, security checks are performed to verify whether the calling or logged on user has the valid permissions to perform the intended operation.
Pre-Operation: Plug-in will run after validation and before the values are saved in the database.
Post-Operation: Plug-in will run after the values have been inserted or changed on the database.
Pre-Images & Post-Images?
Entity images are snapshots of CRM records that are stored on database either before the database operation is completed or after the completion of database operation.
Pre-Image:
It is the snapshot of the entities’ attributes data before saving on the database. The following image shows pre-image availability.
Post-Image:
It is the snapshot of the entities’ attributes data after saving on the database. The following image shows post-image availability.
Pre-Image & Post-Image Example:
Whenever a parent account field is updated on the account entity, we want to retrieve the old value of the field and update in pre-value field.
Register a plug-in in account entity and register a step update account name field and select stage as post-operation.
Register an image step on update step. Give some names to pre-image and post-image checkbox Select attribute to display pre and post image values.
Example Code for Pre-Image and Post-Image
Here we update the account name and parent account.
Pre-Image value updated with parent account value and Post-image value of phone field updated with postvalue of parent account field.
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