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https://github.com/writefreely/writefreely
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Fix tagged posts SQLite query
SQLite doesn't have an `RLIKE` function, so the query for hashtagged posts was failing before. This adds a `regexp` function to SQLite and correctly retrieves all posts on a blog with the requested hashtag. This closes #55
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parent
1c58c64c7c
commit
8a555567a6
3 changed files with 20 additions and 2 deletions
2
app.go
2
app.go
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@ -483,7 +483,7 @@ func connectToDatabase(app *app) {
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log.Error("SQLite database filename value in config.ini is empty.")
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os.Exit(1)
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}
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db, err = sql.Open("sqlite3", app.cfg.Database.FileName+"?parseTime=true&cached=shared")
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db, err = sql.Open("sqlite3_with_regex", app.cfg.Database.FileName+"?parseTime=true&cached=shared")
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db.SetMaxOpenConns(1)
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} else {
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log.Error("Invalid database type '%s'. Only 'mysql' and 'sqlite3' are supported right now.", app.cfg.Database.Type)
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@ -13,13 +13,24 @@
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package writefreely
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import (
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"database/sql"
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"github.com/go-sql-driver/mysql"
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"github.com/mattn/go-sqlite3"
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"github.com/writeas/web-core/log"
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"regexp"
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)
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func init() {
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SQLiteEnabled = true
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regex := func(re, s string) (bool, error) {
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return regexp.MatchString(re, s)
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}
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sql.Register("sqlite3_with_regex", &sqlite3.SQLiteDriver{
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ConnectHook: func(conn *sqlite3.SQLiteConn) error {
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return conn.RegisterFunc("regexp", regex, true)
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},
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})
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}
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func (db *datastore) isDuplicateKeyErr(err error) bool {
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@ -1139,7 +1139,14 @@ func (db *datastore) GetPostsTagged(c *Collection, tag string, page int, include
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if !includeFuture {
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timeCondition = "AND created <= " + db.now()
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}
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rows, err := db.Query("SELECT "+postCols+" FROM posts WHERE collection_id = ? AND LOWER(content) RLIKE ? "+timeCondition+" ORDER BY created "+order+limitStr, collID, "#"+strings.ToLower(tag)+"[[:>:]]")
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var rows *sql.Rows
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var err error
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if db.driverName == driverSQLite {
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rows, err = db.Query("SELECT "+postCols+" FROM posts WHERE collection_id = ? AND LOWER(content) regexp ? "+timeCondition+" ORDER BY created "+order+limitStr, collID, `.*#`+strings.ToLower(tag)+`\b.*`)
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} else {
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rows, err = db.Query("SELECT "+postCols+" FROM posts WHERE collection_id = ? AND LOWER(content) RLIKE ? "+timeCondition+" ORDER BY created "+order+limitStr, collID, "#"+strings.ToLower(tag)+"[[:>:]]")
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}
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if err != nil {
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log.Error("Failed selecting from posts: %v", err)
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return nil, impart.HTTPError{http.StatusInternalServerError, "Couldn't retrieve collection posts."}
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