What is the `context` parameter that is passed to the callback functions

Question

I see a lot of callback functions accept a parameter referred to as context in the GoInstant documentation, but it's not clear what this parameter is or what it's used for.

Answer 1

The context parameter contains meta-data about the event.

The full docs are here: https://developers.goinstant.net/v1/key/context.html

It includes:

• the type of command (SET, GET, etc.)
• the name of the key
• the value of the key after the operation
• the room to which the key belongs
• the user that instantiated the action
• a local boolean used to indicate whether the change was triggered locally or remotely
• and a bubble boolean used to indicate whether the event was triggered from this key or a child key.

It can be useful to understand where and why you are receiving the event.

Disclosure: I work at GoInstant.