# Internationalization with Compose SDK

The Compose SDK utilizes the i18next (opens new window) internationalization framework, making it straightforward to load your own translations.

# Changing the language

To facilitate language changes, the AppConfig of SisenseContextProvider includes a translationConfig property where you can easily set your desired language. For example, to set the language to French, use the following code:

<SisenseContextProvider appConfig={{ translationConfig: { language: 'fr' }}}>

# Loading Additional Translations

By default, the Compose SDK offers a limited number of translation resources. You can utilize translationConfig to load additional translation resources into the internationalization framework.

# Preparing Translation Resources

A translation resource consists of translation keys paired with their corresponding string values. This resource is typically structured as a nested object, making it easier to manage different translations. You can register multiple languages by creating separate translation resources for each language and then adding them to your configuration.

IMPORTANT: Do not translate parts within double curly brackets (i.e., ), as these are placeholders for dynamic values that will be matched using the provided variable names.

# TranslationDictionary type

Each package with translations provides a TranslationDictionary type listing all keys used within that package. Use this type to ensure your custom translation includes all relevant keys.

Example: complete translation for the sdk-ui package

import { TranslationDictionary } from '@sisense/sdk-ui';

const customTranslationResources: TranslationDictionary = {
  ...
};

Note that specifying all translation keys is not required; any keys you do not provide will default to English. Using the TranslationDictionary type as a Partial can help prevent typos in your custom translation.

# Example: Translation Resources

Let’s create translation resources for some fields in sdk-ui in French, and one error message in sdk-data in Spanish:

import { TranslationDictionary } from '@sisense/sdk-ui';

const frenchTranslationResources: Partial<TranslationDictionary> = {
  errors: {
    invalidFilterType: 'Type de filtre invalide',
  },
  chartNoData: 'Aucun résultat'
};

import { TranslationDictionary } from '@sisense/sdk-data';

const spanishTranslationResources: Partial<TranslationDictionary> = {
  errors: {
    measure: {
      unsupportedType: 'Tipo de medida no compatible',
    },
  },
};

As these files may grow larger, consider storing translations in separate files and loading them as needed. JSON format is a suitable option for nested objects like these.

# Configuring Custom Translations

Similar to how we set the language, we can now provide additional translation resources through the translationConfig

Below is an example of loading both translations while setting the default language to French:

import { translationNamespace as sdkDataNamespace } from '@sisense/sdk-data';

<SisenseContextProvider
  appConfig={{
    translationConfig: {
      language: 'fr',
      customTranslations: [{
        language: 'fr',
        resources: frenchTranslationResources,
      },
      {
        language: 'es',
        namespace: sdkDataNamespace, // 'sdkData'
        resources: spanishTranslationResources,
      }]
    }
  }}
 >

Note that we specified the namespace for Spanish, as this translation is meant to be loaded for the sdk-data package.

Translation namespace values can be found in translationNamespace constant exported from every package that has translations. If namespace is not specified, the translation resource will be registered for sdkUi namespace that corresponds to the sdk-ui package.

# Advanced Configuration

For more advanced internationalization configurations, the i18n instance is accessible through the useTranslation hook (opens new window) from the react-i18next package.

Note: The i18n instance is initialized within the SisenseContextProvider. Therefore, it is important to use the useTranslation hook either within the SisenseContextProvider or in its child components. Attempting to access i18n outside of this context will not yield the instance utilized by the Compose SDK.

# Example: Checking Loaded Resources

To verify if the French resource bundle is loaded for the sdk-ui package, you can use the following code:

import { useTranslation } from 'react-i18next';
import { useEffect } from 'react';

const MyComponent = () => {
  const { i18n } = useTranslation();

  useEffect(() => {
	const frenchTranslationResourse = i18n.getResourceBundle('fr', 'sdkUi');
	console.log(`Loaded French translation ${JSON.stringify(frenchTranslationResourse)}`)
  }, [i18n]);

  return <></>;
}

For further details, please refer to the i18next API documentation (opens new window).