Implement budgetservice.Budget(id)

postgres/budgetservice.go

@@ -0,0 +1,13 @@
+package postgres
+
+import "git.javil.eu/jacob1123/budgeteer"
+
+// Budget returns a budget for a given id.
+func (s *Repository) Budget(id string) (*budgeteer.Budget, error) {
+	b := &budgeteer.Budget{ID: id}
+	err := s.DB.Select(&b)
+	if err != nil {
+		return nil, err
+	}
+	return b, nil
+}