| # Copyright 2017-present Open Networking Foundation |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| from __future__ import print_function |
| import os |
| import yaml |
| from django.db import models, migrations |
| from django.contrib.auth.hashers import make_password |
| |
| FIXTURES = os.path.abspath( |
| os.path.dirname(os.path.realpath(__file__)) + "/initial_data.yaml" |
| ) |
| |
| |
| def load_data_from_yaml(): |
| file = open(FIXTURES, "r").read() |
| try: |
| data = yaml.safe_load(file) |
| return data |
| except Exception as e: |
| raise Exception("Cannot load inital data file: %s" % e.message) |
| |
| |
| def persist_data(apps, schema_editor): |
| |
| data = load_data_from_yaml() |
| |
| # iterate over the data |
| for entry in data: |
| |
| # retrieve the class for that model |
| [app, model_name] = entry["model"].split(".") |
| model_class = apps.get_model(app, model_name) |
| |
| # create a new instance for that model |
| i = model_class(**entry["fields"]) |
| |
| # if model is user hash the password |
| if model_name == "User": |
| i.password = make_password(entry["fields"]["password"]) |
| |
| # check relations |
| if "relations" in entry: |
| for (r_name, r) in entry["relations"].items(): |
| # retrieve the related model |
| [r_app, r_model_name] = r["model"].split(".") |
| related_model_class = apps.get_model(r_app, r_model_name) |
| r_model = related_model_class.objects.get(**r["fields"]) |
| |
| # assign relation |
| setattr(i, r_name, r_model) |
| |
| # save the instance |
| i.save() |
| print("Created %s: %s" % (model_name, entry["fields"])) |
| |
| |
| class Migration(migrations.Migration): |
| |
| dependencies = [("core", "0001_initial")] |
| |
| operations = [migrations.RunPython(persist_data)] |