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Adds import and export of plugin data.

Project description

pypi build coverage

django CMS Transfer is an experimental package that allows you to export and import plugin data from a page or a placeholder. It does not support foreign key relations and won’t import/export related data, such as media.

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We’ll be delighted to receive your feedback in the form of issues and pull requests. Before submitting your pull request, please review our contribution guidelines.

We’re grateful to all contributors who have helped create and maintain this package. Contributors are listed at the contributors section.

Documentation

The setting DJANGO_CMS_TRANSFER_SERIALIZER allows to register a custom json serializer. An example for an use case could be to subclass Django’s build-in python serializer and let it base64-encode inline image data base64.

See REQUIREMENTS in the setup.py file for additional dependencies:

python django djangocms

Installation

For a manual install:

  • run pip install djangocms-transfer

  • add djangocms_transfer to your INSTALLED_APPS

  • run python manage.py migrate djangocms_transfer

Customization

Following settings are available:

  • DJANGOCMS_TRANSFER_PROCESS_EXPORT_PLUGIN_DATA:

    Enables processing of plugin instances prior to serialization, e.g. myapp.module.function.

  • DJANGOCMS_TRANSFER_PROCESS_IMPORT_PLUGIN_DATA:

    Enables processing of plugin instances prior to saving, e.g. myapp.module.function. For example: set default-values for ForeignKeys (images for django_filer, ..)

As an example the combination of _PROCESS_EXPORT_PLUGIN_DATA and _PROCESS_IMPORT_PLUGIN_DATA lets you export and import the data between different systems while setting the contents as you need it:

# settings.py
.._PROCESS_EXPORT_PLUGIN_DATA = "myapp.some.module.export_function"
.._PROCESS_IMPORT_PLUGIN_DATA = "myapp.some.module.import_function"

# custom functions
def export_function(plugin, plugin_data):
    # remove child-plugins which can't be handled
    if plugin.parent_id and plugin.parent.plugin_type == "SomeParentPlugin":
        return None
    # change data
    if plugin.plugin_type == "SomePlugin":
        plugin_data["data"].update({
            "some_field": "TODO: change me",
        })
    return plugin_data

def import_function(deserialized_object):
    some_related_object = MyModel.objects.first()
    for field in deserialized_object.object._meta.fields:
        # example of setting a default value for a related field
        if isinstance(field, ForeignKey):
            value = getattr(deserialized_object.object, field.attname)
            if field.related_model == MyModel and value is not None:
                setattr(deserialized_object.object, field.name, some_related_object)

Running Tests

You can run tests by executing:

virtualenv env
source env/bin/activate
pip install -r tests/requirements/base.txt
python setup.py test

For code formatting, black is used. To automatically fix errors reported from black, you can install it via virtualenv and pip install -r tests/requirements/base.txt. After this you just need to run tools/black.

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