Doing .pluck(:column).first is a very common pattern in Discourse and in
most cases, a limit cause isn't being added. Instead of adding a limit
clause to all these callsites, this commit adds two new methods to
ActiveRecord::Relation:
pluck_first, equivalent to limit(1).pluck(*columns).first
and pluck_first! which, like other finder methods, raises an exception
when no record is found
Under exceptional situations the automatic draft feature can fail.
This new **hidden, default off** site setting
`backup_drafts_to_pm_length` will automatically backup any draft that is
saved by the system to a dedicated PM (originating from self)
The body of that PM will contain the text of the reply.
We can enable this feature strategically on sites exhibiting issues to
diagnose issues with the draft system and offer a recourse to users who
appear to lose drafts. We automatically checkpoint these drafts every 5
minutes forcing a new revision each 5 minutes so you can revert to old
content.
Longer term we are considering automatically enabling this kind of feature
for extremely long drafts where the risk is really high one could lose
days of writing.
* drafts in user profile: only show to user herself (not to admins), use avatar replying to (instead of topic OP), add keyboard shortcut for drafts, simplify display labels
* use JSON when testing Draft.stream
* add drafts.json endpoint, user profile tab with drafts stream
* improve drafts stream display in user profile
* truncate excerpts in drafts list, better handling for resume draft action
* improve draft stream SQL query, add rspec tests
* if composer is open, quietly close it when user opens another draft from drafts stream; load PM draft only when user is in /u/username/messages (instead of /u/username)
* cleanup
* linting fixes
* apply prettier styling to modified files
* add client tests for drafts, includes a fixture for drafts.json
* improvements to code following review
* refresh drafts route when user deletes a draft open in the composer while being in the drafts route; minor prettier scss fix
* added more spec tests, deleted an acceptance test for removing drafts that was too finicky, formatting and code style fixes, added appEvent for draft:destroyed
* prettier, eslint fixes
* use "username_lower" from users table, added error handling for rejected promises
* adds guardian spec for can_see_drafts, adds improvements following code review
* move DraftsController spec to its own file
* fix failing drafts qunit test, use getOwner instead of deprecated this.container
* limit test fixture for draft.json testing to new_topic request only
Introduce new patterns for direct sql that are safe and fast.
MiniSql is not prone to memory bloat that can happen with direct PG usage.
It also has an extremely fast materializer and very a convenient API
- DB.exec(sql, *params) => runs sql returns row count
- DB.query(sql, *params) => runs sql returns usable objects (not a hash)
- DB.query_hash(sql, *params) => runs sql returns an array of hashes
- DB.query_single(sql, *params) => runs sql and returns a flat one dimensional array
- DB.build(sql) => returns a sql builder
See more at: https://github.com/discourse/mini_sql
- how long were people typing?
- how long was composer open?
- how many drafts were created?
- correct, draft saved to go away after you continue typing
store in Post.find(xyz).post_stat
