🌐 DRF Localize

Package to provide localization experiences for mobile and api applications.

⚡️ Features

✅ Localize keys for multiple languages
✅ Generate localizable iOS , Android, Web compatible zip & files
✅ Model JSON based fields localization
✅ Library for localizable keys
✅ REST API for localizable keys
✅ Configurable

🔐 Installation

Use the package manager pip to install drf_localize.

pip install drf_localize

then add it to your installed apps:

INSTALLED_APPS = [
    ...,
    'drf_localize',
    ...,
]

then run migrate:

python manage.py migrate

and load initial data:

python manage.py loaddata localizelanguages
python manage.py loaddata localizekeys (optional)

🔨 Configuration

Configuration for DRF Localize is namespaced in a single django setting, named DRF_LOCALIZE, by default everything is configured out of the box.

DRF_LOCALIZE = {
    'LANGUAGES': 'ALL',  # noqa
    'BASE_DIR': BASE_DIR,  # noqa
    'API_KEY_HEADER_NAME': 'HTTP_X_API_KEY',
    'PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'KEY_MODEL_CLASS': 'drf_localize.models.LocalizeKey',
    'LANGUAGE_MODEL_CLASS': 'drf_localize.models.LocalizeLanguage',
    'LANGUAGE_MODEL_CLASS_FIELD': 'code',
}

🔎 Available Settings

Header	Description	Default
LANGUAGES	Specify language codes to use as array.	ALL
BASE_DIR	Specify internal directory path.	BASE_DIR
API_KEY_HEADER_NAME	Specify X-API-Key header.	HTTP_X_API_KEY
PAGINATION_CLASS	Specify pagination class.	rest_framework.pagination.PageNumberPagination
KEY_MODEL_CLASS	Specify key model class, must comply to drf_localize key model.	drf_localize.models.LocalizeKey
LANGUAGE_MODEL_CLASS	Specify language model class.	drf_localize.models.LocalizeLanguage
LANGUAGE_MODEL_CLASS_FIELD	Specify language model class code field.	code

🔧 Usage

Specify localize fields in your model

from django.db import models


class Blog(models.Model):  # noqa

    # DRF Localize model specific constant, which is used to translate model fields
    LOCALIZE_TRANSLATE = ['title']  # or LOCALIZE_TRANSLATE = ['title', 'description']

    # DRF Localize model specific constant, which is used to store translations (json)
    LOCALIZE_FIELD = 'i18n'
    
    # DRF Localize model specific constant, which is used to auto-update or remove translations for languages
    LOCALIZE_AUTO_UPDATE = False # not required , defaults to False

    # Your custom model fields
    title = models.CharField(max_length=254, null=True)
    description = models.CharField(max_length=512, null=True)

    # Referenced json field to store translations
    i18n = models.JSONField(default=dict)

Inherit I18NModelSerializer in your model serializer

from apps.blog.models import Blog  # noqa
from drf_localize.serializers import (
    I18NModelSerializer
)


class BlogSerializer(I18NModelSerializer):
    class Meta:
        model = Blog
        fields = '__all__'

Use your model serializer in your endpoints as usual

from apps.blog.models import Blog  # noqa
from apps.blog.serializers import BlogSerializer  # noqa
from rest_framework.viewsets import GenericViewSet
from rest_framework.generics import (
    ListAPIView,
    CreateAPIView,
    RetrieveUpdateDestroyAPIView,
)


class BlogViewSet(ListAPIView, CreateAPIView, RetrieveUpdateDestroyAPIView, GenericViewSet):
    queryset = Blog.objects.all()
    serializer_class = BlogSerializer

📈 REST API

Standalone mode

If you are planning to use drf_localize's REST API endpoints add package urls in your project.

from django.urls import (include, path, )

urlpatterns = [
    ...,
    path('drf_localize', include('drf_localize.urls', namespace='localize')),
    ...,
]

Create localize key

POST /drf_localize/localize/keys

Parameter	Type	Description
code	string	Required. Unique
i18n	object	Optional.

{
  "code": "DRF Localize",
  "i18n": {
    "en": "DRF Localize",
    "ro": "DRF Localizare",
    "ru": "DRF Локализация"
  }
}

Update localize key

PATCH /drf_localize/localize/keys/:id

Parameter	Type	Description
:id	string	Required.
code	string	Required. Unique
i18n	object	Optional.

{
  "i18n": {
    "en": "DRF Localizes",
    "ro": "DRF Localizare",
    "ru": "DRF Локализация"
  }
}

Create localize namespace key

POST /drf_localize/localize/keys

Parameter	Type	Description
code	string	Required. Unique
i18n	object	Optional.
type	string	Required.

{
  "code": "global",
  "i18n": {
    "en": {
      "localize": "DRF Localizes"
    },
    "ro": {
      "localize": "DRF Localizare"
    },
    "ru": {
      "localize": "DRF Локализация"
    }
  },
  "type": "NAMESPACE"
}

Update localize namespace key

PATCH /drf_localize/localize/keys/:id

Parameter	Type	Description
:id	string	Required.
code	string	Required. Unique
i18n	object	Optional.
type	string	Required.

{
  "i18n": {
    "en": {
      "localize": "DRF Localize"
    },
    "ro": {
      "localize": "DRF Localizare"
    },
    "ru": {
      "localize": "DRF Локализация"
    }
  },
  "type": "NAMESPACE"
}

Retrieve localize namespace keys

GET /drf_localize/localize/keys?search=NAMESPACE

Download platform specific localize key file

GET /drf_localize/localize/keys/:platform/:language/file

Parameter	Type	Description
:platform	string	Required. ios/ android / web
:language	string	Required. en/ any other language code

Download platform specific localize keys zip file

GET /drf_localize/localize/keys/:platform/zip

Parameter	Type	Description
:platform	string	Required. ios/ android / web

Download all platform specific localize keys in a single zip file

GET /drf_localize/localize/keys/zip

Service mode

You will need to add a middleware class:

# This middleware listens to `X-API-Key` key header value and finds your application.

MIDDLEWARE = [
    ...,
    'drf_localize.middlewares.LocalizeApplicationMiddleware',
    ...,
]

then add X-API-Key header in standalone mode endpoints:

Header	Type	Description
X-API-Key	string	Required. Your application key

Create application

POST /drf_localize/localize/applications

Parameter	Type	Description
title	string	Optional.
description	string	Optional.

Retrieve application

GET /drf_localize/localize/application

Header	Type	Description
X-API-Key	string	Required. Your application key

Attach application languages

POST /drf_localize/localize/application/languages

Parameter	Type	Description
languages_id	array	Required.

Header	Type	Description
X-API-Key	string	Required. Your application key

{
  "languages_id": [
    2,
    1
  ]
}

Detach application languages

DELETE /drf_localize/localize/application/languages

Parameter	Type	Description
languages_id	array	Required.

Header	Type	Description
X-API-Key	string	Required. Your application key

{
  "languages_id": [
    1
  ]
}

Retrieve application languages

GET /drf_localize/localize/application/languages

Header	Type	Description
X-API-Key	string	Required. Your application key

[
  {
    "code": "ab",
    "name": "Abkhaz",
    "native": "аҧсуа"
  }
]

📦️ Library

from drf_localize import localize

# Set translatable key translation.
localize.set_key('Welcome').set_en('Welcome').set_ro('Bine ati venit').set_pt('Receber')  # noqa

# Set translatable namespace translation.
localize.set_key_namespace('common').set_en({
    'welcome': 'Welcome', 'order': 'Order'
}).set_ro({
    'welcome': 'Bine ati venit', 'order': 'Ordin'
}).set_pt({
    'welcome': 'Receber', 'order': 'Pedido'
})

# Build 'en' translation file for iOS
localize.build(language='en')
file = localize.to_platform(platform='IOS')  # noqa

# Build translations zip file for iOS
file = localize.build_zip(platform='IOS')  # noqa

# Build translations zip file for ANDROID
file = localize.build_zip(platform='ANDROID')  # noqa

# Build translations zip file for WEB
file = localize.build_zip(platform='WEB')  # noqa

# Build translations zip file for every platform
file = localize.build_zip()  # noqa

📌 Library helpers

# from drf_localize import localize_key_type

class LocalizeKeyType:
    KEY_NAMESPACE = 'NAMESPACE'
    KEY_PLAIN = 'PLAIN'

    KEY_TYPES = [KEY_NAMESPACE, KEY_PLAIN]
    KEY_CHOICES = (
        (KEY_NAMESPACE, KEY_NAMESPACE),
        (KEY_PLAIN, KEY_PLAIN)
    )


# from drf_localize import localize_platform

class LocalizePlatform:
    PLATFORM_IOS = 'IOS'
    PLATFORM_ANDROID = 'ANDROID'
    PLATFORM_WEB = 'WEB'

    PLATFORM_TYPES = [PLATFORM_IOS, PLATFORM_ANDROID, PLATFORM_WEB]
    PLATFORM_CHOICES = (
        (PLATFORM_IOS, PLATFORM_IOS),
        (PLATFORM_ANDROID, PLATFORM_ANDROID),
        (PLATFORM_WEB, PLATFORM_WEB)
    )

⚗️ Internal Serializer Classes

Uses I18N serializer to transform localize field

Inherit this I18NModelSerializer serializer in your model serializer

from rest_framework.serializers import ModelSerializer


class I18NModelSerializer(ModelSerializer):  # noqa
    ...

Transforms localize field into i18n json field with translations

from rest_framework.serializers import Serializer


class I18N(Serializer):  # noqa
    ...

👥 Contributing

Pull requests are always appreciated. Open issues addressing pull requests.

Flow:

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Test your changes to the best of your ability.
4. Update the documentation to reflect your changes if they add or changes current functionality.
5. Commit your changes (git commit -am 'Added some feature').
6. Push to the branch (git push origin my-new-feature)
7. Create new Pull Request