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LEGO Build Status Requirements Status

Open source backend for, frontend located at webkom/lego-webapp

MIT last commit contributors

LEGO Er Ganske Oppdelt

Getting started

LEGO requires python3.7, python3.7-venv, docker and docker-compose. Services like Postgres, Redis, Thumbor and Minio run inside docker.

# Initial setup (only need to once)
$ git clone && cd lego/
$ python3 -m venv venv
$ echo "from .development import *" > lego/settings/
$ source venv/bin/activate
$ pip install -r requirements/dev.txt
$ python initialize_development

# Activate and run (do every time)
$ docker-compose up -d
$ source venv/bin/activate
$ python runserver

If you get problems it can be a solution to delete the venv, and do a fresh setup

Code Style

This codebase uses the PEP 8 code style. We enforce this with isort, black & flake8. In addition to the standards outlined in PEP 8, we have a few guidelines (see setup.cfg for more info):

Format the code with black & isort

$ make fixme

To check if it is formatted properly, run:

$ tox -e isort -e flake8 -e black


If you want to run a specific test class you can run

$ ./ test lego.apps.[APP]

You can add flags to speed up the tests

By adding the --keepdb the next time it will go a lot faster to run the tests multiple times. By adding the --parallel will run multiple tests in parallel using multiple cores.

If you want to check your test coverage, you can do the following

# Install the packages needed
$ pip install -r requirments/coverage.txt

# Run a full test run with coverage. This will run all tests in LEGO.
$ coverage run --source=lego ./ test

# Then you can output the full coverage report
$ coverage report
# or a small one that only contains the things you are interested in
$ coverage report | grep [some string]


Lego runs in Docker Swarm and deploys are managed by Drone and Ansible.

How to deploy:

  1. Make sure the changes is pushed to master and the test passes.
  2. Have you added some new settings in settings/? If so make sure the Ansible variables reflects these changes.
  3. We run migrations automatically, make sure they work!
  4. Push to the prod branch. From master: git push origin master:prod
  5. Wait for the prod build to complete, last step will be docker build
  6. Go to and use the deployment feature to deploy the production build.

Ansible will run the playbook for deploying the new build to staging or production.

Testing with elasticsearch

Testing with elasticsearch

By default, development uses postgres for search. We use elasticsearch in production, so you might want to test things locally with elasticsearch. In order to do so, you need to run elasticsearch from docker-compose.extra.yml by running docker-compose -f docker-compose.extra.yml up -d. Then you need to run lego with the env variable SEARCH_BACKEND=elasticsearch. You might need to run the migrate_search and rebuild_index commands to get elasticsearch up to date.



If you get an error while installing requirements, you might be missing some dependencies on your system.

$ apt-get install libpq-dev python3-dev

For MACOS you need to brew install postgresql

If you get an error while running initialize_development mentioning elasticsearch, you probably need run the following code, and then start over from docker-compose up -d. Read why and how to make it permanent on Elasticsearch docs.

$ sysctl -w vm.max_map_count=262144

If you get ld: library not found for -lssl

export LDFLAGS="-L/usr/local/opt/openssl/lib"

When changing the user fixtures one must load new fixtures

./ load_fixtures --generate

An overview of the available users for development can be found in this PR

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