fixed indexing issues

comics.go

@@ -22,6 +22,16 @@ var db *sql.DB 				= nil
 var mediaPath *string 		= nil
 var templatesPath *string	= nil
 
+const dbSquema string = `
+CREATE TABLE IF NOT EXISTS comic (
+	id          INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    datetime    DATETIME DEFAULT CURRENT_TIMESTAMP,
+    title       CHAR(50),
+    image       CHAR(200),
+    description TEXT,
+    tags        TEXT
+);`
+
 type Comic struct {
 	ID			int
 	DateTime    string
@@ -55,18 +65,23 @@ func (e * Err) Error() string {
 	return e.msg
 }
 
-var NoSuchComicErr	Err = Err{msg: "no such comic Found"}
+var NoSuchComicErr	Err = Err{msg: "no such comic found"}
+
+func (e * Err) With(i string) Err {
+	return Err{msg:fmt.Sprintf("%s with %s", e.msg, i)}
+}
 
 func (c *Comic) readRow(db * sql.Rows) error {
-    return db.Scan(&c.DateTime, &c.Title, &c.Image,
+    return db.Scan(&c.ID, &c.DateTime, &c.Title, &c.Image,
         &c.Description, &c.Tags)
 }
 
 func getComic(id int) (*Comic, error) {
 	c := new(Comic)
+	nferr := NoSuchComicErr.With(fmt.Sprintf("id \"%d\"", id))
 
 	if id < 0 {
-		return c, &NoSuchComicErr
+		return c, &nferr
 	}
 	
     comics, err := allComics()
@@ -74,24 +89,16 @@ func getComic(id int) (*Comic, error) {
         return c, err
     }
     
-    if len(comics) <= id || id < 0 {
-		return c, &NoSuchComicErr
+    log.Println(comics)
+    
+    if len(comics) <= id {
+		return c, &nferr
     }
     
 	*c = comics[id]
     return c, err
 }
 
-const dbSquema string = `
-CREATE TABLE IF NOT EXISTS comic (
-	id          INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
-    datetime    DATETIME DEFAULT CURRENT_TIMESTAMP,
-    title       CHAR(50),
-    image       CHAR(200),
-    description TEXT,
-    tags        TEXT
-);`
-
 func readRows(rows *sql.Rows) ([]Comic, error) {
     comics := []Comic{}
     for rows.Next() {
@@ -189,7 +196,7 @@ func comicView(w http.ResponseWriter, r * http.Request) {
 	}
 	
 	context.Next = i
-	if i < (len(comics) - 1) {
+	if i < (len(comics)) {
 		context.Next = i + 1
 	}