Use django's gettext in Svelte
Wrapper around django's JavaScript i18n features in Svelte.
Django docs: Using the JavaScript translation catalog
In your rollup configuration:
import svelte from 'rollup-plugin-svelte';
import { writeGettextExtracts, gettextStringExtractor } from 'svelte-django-gettext/build';
export default {
input: 'app.js',
output: {...},
plugins: [
svelte({
preprocessors: {
markup: gettextStringExtractor
}
}),
writeGettextExtracts('js/_svelte_django_extracted_messages.js'),
]
}Or with vite:
import { defineConfig } from 'vite';
import { svelte } from '@sveltejs/vite-plugin-svelte';
import { gettextStringExtractor, writeGettextExtracts } from 'svelte-django-gettext/build';
export default defineConfig({
base: '',
plugins: [
svelte({
preprocess: {
markup: gettextStringExtractor
},
}),
writeGettextExtracts('js/_svelte_django_extracted_messages.js'),
],
});In your application:
<script>
import gettext from 'svelte-django-gettext';
</script>
<h1>{gettext('hello')}</h1>Make sure the page loads the generated catalog, from a django template: <script src="{% url 'javascript-catalog' %}"></script>.
If this is not the case, all functions will just return their message id.
How it works:
Django's ./manage.py makemessages cannot parse .svelte files to extract gettext() calls.
A preprocessor extracts gettext() calls and outputs _svelte_django_extracted_messages.js, which then contains gettext calls extracted from your .svelte files.
This file should be added to .gitignore, but Django's makemessages management command can read translations strings from it.