[EE] Refactor the way we pass `old associations` to issuable's update services (!3537) · Merge requests · GitLab.org / GitLab · GitLab

Rémy Coutable requested to merge 40226-refactor-the-issuable-s-webhooks-data-architecture-ee into master Nov 23, 2017

CE MR: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/15542

What does this MR do?

Improves the architecture to pass around associations' previous values in IssuableBaseService.

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Because the methods signature were started to become quite long.

Does this MR meet the acceptance criteria?

Tests added for this feature/bug
Review
- Has been reviewed by Backend
- Has been reviewed by Database
Conform by the merge request performance guides
Conform by the style guides
Squashed related commits together

What are the relevant issue numbers?

Closes #40226