Added better error handling

middleware/db/db.go

@@ -29,7 +29,10 @@ var _ middleware.PostSetupMiddleware = &Middleware{}
 // GetConnection is an simple helper function that returns an connection to the db
 func GetConnection(c *gin.Context, db string) (*pgxpool.Conn, error) {
 	if co, ok := c.Get(ContextKey); ok {
-		return co.(ConnGet)(db), nil
+		if cg, ok := co.(ConnGet); ok {
+			return cg(db), nil
+		}
+		return nil, fmt.Errorf("Failed to convert the method. %T != ConnGet", co)
 	}
 	return nil, errors.New("No db.Middleware set up. ")
 }
@@ -101,7 +104,7 @@ func (m *Middleware) GetConn(name string) *pgxpool.Conn {
 
 // Gin is the Entrypoint for Gin.
 func (m *Middleware) Gin(c *gin.Context) {
-	c.Set(ContextKey, m.GetConn)
+	c.Set(ContextKey, ConnGet(m.GetConn))
 }
 
 // Setup adds the connections from the configfile into the middleware