# What this PR does Related to https://github.com/grafana/oncall-private/issues/2947 **NOTE** This PR introduces steps 1 and 2 of the 3 part migration proposed [here](https://raintank-corp.slack.com/archives/C06K1MQ07GS/p1732555465144099). Step 3, swapping reads to be from the new-column and dropping dual-writes, will be done in a future PR/release. --- I’m tackling this work now because _ultimately_ I want to move `AlertReceiveChannel.rate_limited_in_slack_at` to `SlackChannel.rate_limited_at` , but first I sorta need to refactor `SlackMessage.channel_id` from a `CHAR` field to a foreign key relationship (because in the spots where we touch Slack rate limiting, like [here](https://github.com/grafana/oncall/blob/dev/engine/apps/slack/alert_group_slack_service.py#L42-L50) for example, we only have `slack_message.channel_id`, which means I need to do extra queries to fetch the appropriate `SlackChannel` to then be able to get/set `SlackChannel.rate_limited_at` Other minor stuffs: - it also prepares us to drop `SlackMessage._slack_team_identity`. We already have a `@property` of `SlackMessage.slack_team_identity` (which [previously had some hacky logic](https://github.com/grafana/oncall/blob/dev/engine/apps/slack/models/slack_message.py#L74-L84)). I've refactored `SlackMessage.slack_team_identity` to simply point to `self.organization.slack_team_identity` + updated our code to _stop_ setting `SlackMessage._slack_team_identity` (will drop this column in future release) ## Checklist - [x] Unit, integration, and e2e (if applicable) tests updated - [x] Documentation added (or `pr:no public docs` PR label added if not required) - [x] Added the relevant release notes label (see labels prefixed w/ `release:`). These labels dictate how your PR will show up in the autogenerated release notes. |
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| .. | ||
| ical_events | ||
| migrations | ||
| models | ||
| tasks | ||
| tests | ||
| __init__.py | ||
| constants.py | ||
| exceptions.py | ||
| ical_utils.py | ||