Fix metadata editor

Convert slices to postgres arrays.

lib/admin.go

@@ -87,6 +87,7 @@ func cleanEmptyStr(s []string) []string {
 }
 
 func saveHandler(h handler) {
+	// XXX: check for errors (ISBN, length(lang), ...)
 	id := mux.Vars(h.r)["id"]
 	if !h.sess.IsModerator() {
 		notFound(h)
@@ -97,26 +98,26 @@ func saveHandler(h handler) {
 	publisher := h.r.FormValue("publisher")
 	date := h.r.FormValue("date")
 	description := h.r.FormValue("description")
-	author := cleanEmptyStr(h.r.Form["author"])
+	authors := cleanEmptyStr(h.r.Form["author"])
 	tags := cleanEmptyStr(strings.Split(h.r.FormValue("tags"), ","))
-	isbn := parser.ISBN(h.r.FormValue("isbn")) // XXX: check for errors
-	lang := cleanEmptyStr(h.r.Form["lang"])
+	isbn := parser.ISBN(h.r.FormValue("isbn"))
+	lang := h.r.FormValue("lang")
 	book := map[string]interface{}{"title": title,
 		"publisher":   publisher,
 		"date":        date,
 		"description": description,
-		"author":      author,
+		"authors":     authors,
 		"tags":        tags,
 		"isbn":        isbn,
 		"lang":        lang}
 	err := h.db.UpdateBook(id, book)
 	if err != nil {
 		log.Error("Updating book: ", err)
-		notFound(h)
-		return
+		h.sess.Notify("Can't modify book!", err.Error(), "error")
+	} else {
+		h.sess.Notify("Book Modified!", "", "success")
 	}
 
-	h.sess.Notify("Book Modified!", "", "success")
 	h.sess.Save(h.w, h.r)
 	if h.db.IsBookActive(id) {
 		http.Redirect(h.w, h.r, "/book/"+id, http.StatusFound)

lib/database/books.go

@@ -4,6 +4,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/go-pg/pg"
+
 	log "github.com/cihub/seelog"
 )
 
@@ -132,7 +134,11 @@ func (db *pgDB) UpdateBook(id string, data map[string]interface{}) error {
 			setCondition += ", "
 		}
 		setCondition += col + " = ?"
-		params = append(params, val)
+		if col == "authors" || col == "tags" {
+			params = append(params, pg.Array(val))
+		} else {
+			params = append(params, val)
+		}
 	}
 	_, err := db.sql.Model(&Book{}).
 		Set(setCondition, params...).