use servemux *properly* this time; better error handling for DB gets

controller/blog.go

@@ -3,6 +3,7 @@ package controller
 import (
 	"arimelody-web/model"
 	"database/sql"
+	"strings"
 
 	"github.com/jmoiron/sqlx"
 )
@@ -22,6 +23,7 @@ func GetBlogPost(db *sqlx.DB, id string) (*model.BlogPost, error) {
         id,
     )
     if err != nil {
+        if strings.Contains(err.Error(), "no rows") { return nil, nil }
         return nil, err
     }