Update an observation

datastore/observations.go

@@ -46,3 +46,26 @@ func (s *observationsStore) List(opt *models.ObservationListOptions) ([]*models.
 	}
 	return observations, nil
 }
+
+func (s *observationsStore) Update(id int64, observation *models.Observation) (bool, error) {
+	_, err := s.Get(id)
+	if err != nil {
+		return false, err
+	}
+
+	if id != observation.Id {
+		return false, models.ErrObservationNotFound
+	}
+
+	observation.UpdatedAt = time.Now()
+	changed, err := s.dbh.Update(observation)
+	if err != nil {
+		return false, err
+	}
+
+	if changed == 0 {
+		return false, ErrNoRowsUpdated
+	}
+
+	return true, nil
+}

datastore/observations_test.go

@@ -88,3 +88,23 @@ func TestObservationsStore_List_db(t *testing.T) {
 		t.Errorf("got observations %+v, want %+v", observations, want)
 	}
 }
+
+func TestObservationsStore_Update_db(t *testing.T) {
+	tx, _ := DB.Begin()
+	defer tx.Rollback()
+
+	observation := insertObservation(t, tx)
+
+	d := NewDatastore(tx)
+
+	// Tweak it
+	observation.ObservationName = "Updated Obs"
+	updated, err := d.Observations.Update(observation.Id, observation)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !updated {
+		t.Error("!updated")
+	}
+}