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123 lines
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123 lines
5.9 KiB
ReStructuredText
.. _development:
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Open edX development
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====================
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In addition to running Open edX in production, Tutor can be used for local development of Open edX. This means it is possible to hack on Open edX without setting up a Virtual Machine. Essentially, this replaces the devstack provided by edX.
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The following commands assume you have previously launched a :ref:`local <local>` Open edX platform. If you have not done so already, you should run::
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tutor local quickstart
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You should setup real host names for the LMS and the CMS (i.e: not "localhost"). It is not necessary to configure the DNS records for local development: in other words, it doesn't matter that the chosen domain names exist or not for your platform, as the LMS and the CMS will be accessed on ``localhost``. You should *not* activate HTTPS certificates, which will not work locally.
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Once the local platform has been configured, you should stop it so that it does not interfere with the development environment::
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tutor local stop
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Run a local development webserver
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---------------------------------
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::
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tutor dev runserver lms # Access the lms at http://localhost:8000
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tutor dev runserver cms # Access the cms at http://localhost:8001
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Running arbitrary commands
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--------------------------
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To run any command inside one of the containers, run ``tutor dev run [OPTIONS] SERVICE [COMMAND] [ARGS]...``. For instance, to open a bash shell in the LMS or CMS containers::
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tutor dev run lms bash
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tutor dev run cms bash
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To open a python shell in the LMS or CMS, run::
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tutor dev run lms ./manage.py lms shell
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tutor dev run cms ./manage.py cms shell
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You can then import edx-platform and django modules and execute python code.
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To collect assets, you can use the standard ``update_assets`` Open edX command with the right settings::
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tutor dev run lms paver update_assets --settings=tutor.development
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tutor dev run cms paver update_assets --settings=tutor.development
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Point to a local edx-platform
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-----------------------------
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If you have one, you can point to a local version of `edx-platform <https://github.com/edx/edx-platform/>`_ on your host machine. To do so, pass a ``-P/--edx-platform-path`` option to the commands. For instance::
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tutor dev run --edx-platform-path=/path/to/edx-platform lms bash
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If you don't want to rewrite this option every time, you can instead define the environment variable::
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export TUTOR_EDX_PLATFORM_PATH=/path/to/edx-platform
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All development commands will then automatically mount your local repo.
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**Note:** containers are built on the Ironwood release. If you are working on a different version of Open edX, you will have to rebuild the ``openedx`` docker images with the version. See the :ref:`fork edx-platform section <edx_platform_fork>`.
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Prepare the edx-platform repo
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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In order to run a fork of edx-platform, dependencies need to be properly installed and assets compiled in that repo. To do so, run::
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export TUTOR_EDX_PLATFORM_PATH=/path/to/edx-platform
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tutor dev run lms pip install --requirement requirements/edx/development.txt
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tutor dev run lms python setup.py install
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tutor dev run lms paver update_assets --settings=tutor.development
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Debug edx-platform
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~~~~~~~~~~~~~~~~~~
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To debug a local edx-platform repository, add a ``import pdb; pdb.set_trace()`` breakpoint anywhere in your code and run::
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tutor dev runserver lms --edx-platform-path=/path/to/edx-platform
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Customised themes
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-----------------
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With Tutor, it's pretty easy to develop your own themes. Start by placing your files inside the ``env/build/openedx/themes`` directory. For instance, you could start from the ``edx.org`` theme present inside the ``edx-platform`` repository::
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cp -r /path/to/edx-platform/themes/edx.org $(tutor config printroot)/env/build/openedx/themes/
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Then, run a local webserver::
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tutor dev runserver lms
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The LMS can then be accessed at http://localhost:8000.
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Then, follow the `Open edX documentation to apply your themes <https://edx.readthedocs.io/projects/edx-installing-configuring-and-running/en/latest/configuration/changing_appearance/theming/enable_themes.html#apply-a-theme-to-a-site>`_. You will not have to modify the ``lms.env.json``/``cms.env.json`` files; just follow the instructions to add a site theme in http://localhost:8000/admin (starting from step 3).
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Watch the themes folders for changes (in a different terminal)::
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tutor dev watchthemes
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Make changes to some of the files inside the theme directory: the theme assets should be automatically recompiled and visible at http://localhost:8000.
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Custom edx-platform settings
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----------------------------
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By default, tutor settings files are mounted inside the docker images at ``/openedx/edx-platform/lms/envs/tutor/`` and ``/openedx/edx-platform/cms/envs/tutor/``. In the various ``dev`` commands, the default ``edx-platform`` settings module is set to ``tutor.development`` and you don't have to do anything to set up these settings.
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If, for some reason, you want to use different settings, you will need to pass the ``-S/--edx-platform-settings`` option to each command. Alternatively, you can define the ``TUTOR_EDX_PLATFORM_SETTINGS`` environment variable.
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For instance, let's assume you have created the ``/path/to/edx-platform/lms/envs/mysettings.py`` and ``/path/to/edx-platform/cms/envs/mysettings.py`` modules. These settings should be pretty similar to the following files::
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$(tutor config printroot)/env/apps/openedx/tutor/lms/development.py
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$(tutor config printroot)/env/apps/openedx/tutor/cms/development.py
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Alternatively, the ``mysettings.py`` files can import the tutor development settings::
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# Beginning of mysettings.py
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from .tutor.development import *
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You should then specify the settings to use on the host::
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export TUTOR_EDX_PLATFORM_SETTINGS=mysettings
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From then on, all ``dev`` commands will use the ``mysettings`` module. For instance::
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tutor dev runserver lms --edx-platform-path=/path/to/edx-platform
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