Fix mentionable users when writing issue comments (#32715)

Fix #32702

routers/web/repo/issue.go

@@ -637,8 +637,12 @@ func attachmentsHTML(ctx *context.Context, attachments []*repo_model.Attachment,
 	return attachHTML
 }
 
-// get all teams that current user can mention
-func handleTeamMentions(ctx *context.Context) {
+// handleMentionableAssigneesAndTeams gets all teams that current user can mention, and fills the assignee users to the context data
+func handleMentionableAssigneesAndTeams(ctx *context.Context, assignees []*user_model.User) {
+	// TODO: need to figure out how many places this is really used, and rename it to "MentionableAssignees"
+	// at the moment it is used on the issue list page, for the markdown editor mention
+	ctx.Data["Assignees"] = assignees
+
 	if ctx.Doer == nil || !ctx.Repo.Owner.IsOrganization() {
 		return
 	}

routers/web/repo/issue_list.go

@@ -715,9 +715,7 @@ func issues(ctx *context.Context, milestoneID, projectID int64, isPullOption opt
 		ctx.ServerError("GetRepoAssignees", err)
 		return
 	}
-	ctx.Data["Assignees"] = shared_user.MakeSelfOnTop(ctx.Doer, assigneeUsers)
-
-	handleTeamMentions(ctx)
+	handleMentionableAssigneesAndTeams(ctx, shared_user.MakeSelfOnTop(ctx.Doer, assigneeUsers))
 	if ctx.Written() {
 		return
 	}

routers/web/repo/issue_page_meta.go

@@ -148,7 +148,7 @@ func (d *IssuePageMetaData) retrieveAssigneesDataForIssueWriter(ctx *context.Con
 		d.AssigneesData.SelectedAssigneeIDs = strings.Join(ids, ",")
 	}
 	// FIXME: this is a tricky part which writes ctx.Data["Mentionable*"]
-	handleTeamMentions(ctx)
+	handleMentionableAssigneesAndTeams(ctx, d.AssigneesData.CandidateAssignees)
 }
 
 func (d *IssuePageMetaData) retrieveProjectsDataForIssueWriter(ctx *context.Context) {

routers/web/repo/pull.go

@@ -840,9 +840,7 @@ func viewPullFiles(ctx *context.Context, specifiedStartCommit, specifiedEndCommi
 		ctx.ServerError("GetRepoAssignees", err)
 		return
 	}
-	ctx.Data["Assignees"] = shared_user.MakeSelfOnTop(ctx.Doer, assigneeUsers)
-
-	handleTeamMentions(ctx)
+	handleMentionableAssigneesAndTeams(ctx, shared_user.MakeSelfOnTop(ctx.Doer, assigneeUsers))
 	if ctx.Written() {
 		return
 	}