How to load associations of the session context (or in general) and why?

[mkucmus]

Currently there is no way to associate linked entities and they remain null within context response, called by refreshSessionContext method of useSessionContext composable. Some of them are associated and present in the response, some of them not.

context.salesChannel.language is a good example, and it would be needed to get the current context's locale code for translations in the very beginning of app lifecycle. Language cannot be associated and is always nullish. The workaround is to get the languageId from the context and call another endpoint /store-api/languages to find corresponding one.
little playground how it can work is here for this particular example: https://stackblitz.com/github/mkucmus/language-translations?file=app.vue

Pros of having associations for context endpoint:

• save requests (at least one more in case of current language)
• more flexibility
• less extra plugins/apps needed to control the shape of the context response

Cons:

• associations are heavy to load and slow down the response time
• it's not clear what available associations are

Based on the result I will or will not create a corresponding ticket for the Shopware 6 platform.

[mkucmus]

@BrocksiNet I think we've got a good input to proceed doing improvements in chosen areas ;) both scenarios are related to the core I guess and we should rather address it as an expected behavior.