Cascade poll deletions properly when deleting topics normally or via delete all posts.

common/poll.go

@@ -0,0 +1,61 @@
+package common
+
+import (
+	"database/sql"
+
+	qgen "github.com/Azareal/Gosora/query_gen"
+)
+
+var pollStmts PollStmts
+
+type Poll struct {
+	ID          int
+	ParentID    int
+	ParentTable string
+	Type        int // 0: Single choice, 1: Multiple choice, 2: Multiple choice w/ points
+	//AntiCheat bool // Apply various mitigations for cheating
+	// GroupPower map[gid]points // The number of points a group can spend in this poll, defaults to 1
+
+	Options      map[int]string
+	Results      map[int]int  // map[optionIndex]points
+	QuickOptions []PollOption // TODO: Fix up the template transpiler so we don't need to use this hack anymore
+	VoteCount    int
+}
+
+func (p *Poll) CastVote(optionIndex int, uid int, ip string) error {
+	return Polls.CastVote(optionIndex, p.ID, uid, ip) // TODO: Move the query into a pollStmts rather than having it in the store
+}
+
+func (p *Poll) Delete() error {
+	_, err := pollStmts.deletePollVotes.Exec(p.ID)
+	if err != nil {
+		return err
+	}
+	_, err = pollStmts.deletePollOptions.Exec(p.ID)
+	if err != nil {
+		return err
+	}
+	_, err = pollStmts.deletePoll.Exec(p.ID)
+	return err
+}
+
+func (p *Poll) Copy() Poll {
+	return *p
+}
+
+type PollStmts struct {
+	deletePoll        *sql.Stmt
+	deletePollOptions *sql.Stmt
+	deletePollVotes   *sql.Stmt
+}
+
+func init() {
+	DbInits.Add(func(acc *qgen.Accumulator) error {
+		pollStmts = PollStmts{
+			deletePoll:        acc.Delete("polls").Where("pollID=?").Prepare(),
+			deletePollOptions: acc.Delete("polls_options").Where("pollID=?").Prepare(),
+			deletePollVotes:   acc.Delete("polls_votes").Where("pollID=?").Prepare(),
+		}
+		return acc.FirstError()
+	})
+}

common/poll_store.go

@@ -12,28 +12,6 @@ import (
 
 var Polls PollStore
 
-type Poll struct {
-	ID          int
-	ParentID    int
-	ParentTable string
-	Type        int // 0: Single choice, 1: Multiple choice, 2: Multiple choice w/ points
-	//AntiCheat bool // Apply various mitigations for cheating
-	// GroupPower map[gid]points // The number of points a group can spend in this poll, defaults to 1
-
-	Options      map[int]string
-	Results      map[int]int  // map[optionIndex]points
-	QuickOptions []PollOption // TODO: Fix up the template transpiler so we don't need to use this hack anymore
-	VoteCount    int
-}
-
-func (p *Poll) CastVote(optionIndex int, uid int, ip string) error {
-	return Polls.CastVote(optionIndex, p.ID, uid, ip) // TODO: Move the query into a pollStmts rather than having it in the store
-}
-
-func (p *Poll) Copy() Poll {
-	return *p
-}
-
 type PollOption struct {
 	ID    int
 	Value string

common/topic.go

@@ -385,8 +385,17 @@ func (t *Topic) Delete() error {
 		return err
 	}
 	_, err = topicStmts.deleteActivity.Exec(t.ID)
+	if err != nil {
 		return err
 	}
+	if t.Poll > 0 {
+		err = (&Poll{ID:t.Poll}).Delete()
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
 
 // TODO: Write tests for this
 func (t *Topic) Update(name, content string) error {

common/user.go

@@ -187,7 +187,7 @@ func init() {
 
 			scheduleAvatarResize: acc.Insert("users_avatar_queue").Columns("uid").Fields("?").Prepare(),
 
-			deletePosts:            acc.Select("topics").Columns("tid,parentID").Where("createdBy=?").Prepare(),
+			deletePosts:            acc.Select("topics").Columns("tid,parentID,poll").Where("createdBy=?").Prepare(),
 			deleteProfilePosts:     acc.Select("users_replies").Columns("rid").Where("createdBy=?").Prepare(),
 			deleteReplyPosts:       acc.Select("replies").Columns("rid,tid").Where("createdBy=?").Prepare(),
 			getLikedRepliesOfTopic: acc.Select("replies").Columns("rid").Where("tid=? AND likeCount>0").Prepare(),
@@ -333,8 +333,8 @@ func (u *User) DeletePosts() error {
 	updatedForums := make(map[int]int) // forum[count]
 	tc := Topics.GetCache()
 	for rows.Next() {
-		var tid, parentID int
+		var tid, parentID, poll int
-		err := rows.Scan(&tid, &parentID)
+		err := rows.Scan(&tid, &parentID, &poll)
 		if err != nil {
 			return err
 		}
@@ -364,6 +364,12 @@ func (u *User) DeletePosts() error {
 		if err != nil {
 			return err
 		}
+		if poll > 0 {
+			err = (&Poll{ID:poll}).Delete()
+			if err != nil {
+				return err
+			}
+		}
 	}
 	if err = rows.Err(); err != nil {
 		return err