Update to pg v9

lib/database/books.go

@@ -4,26 +4,26 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-pg/pg"
+	"github.com/go-pg/pg/v9"
 )
 
 // Book metadata
 type Book struct {
-	ID          string `sql:"type:varchar(16)"`
+	ID          string `pg:"type:varchar(16)"`
 	Title       string
-	Authors     []string `sql:"authors" pg:",array"`
+	Authors     []string `pg:"authors,array"`
 	Contributor string
 	Publisher   string
 	Description string
-	Tags        []string `sql:"tags" pg:",array"`
+	Tags        []string `pg:"tags,array"`
 	Date        string
-	Lang        string    `sql:"type:varchar(3)"`
-	Isbn        string    `sql:"type:varchar(13)"`
-	FileSize    int       `sql:"type:integer"`
-	Cover       bool      `sql:",notnull"`
-	Active      bool      `sql:",notnull"`
-	UploadDate  time.Time `sql:"type:timestamp"`
-	Tsv         string    `sql:"type:tsvector"`
+	Lang        string    `pg:"type:varchar(3)"`
+	Isbn        string    `pg:"type:varchar(13)"`
+	FileSize    int       `pg:"type:integer"`
+	Cover       bool      `pg:",notnull"`
+	Active      bool      `pg:",notnull"`
+	UploadDate  time.Time `pg:"type:timestamp"`
+	Tsv         string    `pg:"type:tsvector"`
 	Visit       *Visit
 }
 
@@ -156,7 +156,7 @@ func (db *pgDB) ActiveBook(id string) error {
 func (db *pgDB) IsBookActive(id string) bool {
 	var active []bool
 	err := db.sql.Model(&Book{}).
-		Column("active").
+		Relation("active").
 		Where("id = ?", id).
 		Select(&active)
 	if err != nil || len(active) != 1 {