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Mixin API

When you add the ParseReact.Mixin object to your component's list of mixins, it adds support for the observe() lifecycle function.

observe(props, state)

Called whenever the component will update, before it renders. At mount time, the initial props and state are passed as function parameters. Each successive time, the upcoming props and state are passed as parameters. This is because the method is called from componentWillUpdate. This method should return an object of key/value pairs, where each key denotes the name of a subscription, and each key is a Parse Query or Local Subscription.

Additionally, it adds the following methods to the component:

pendingQueries()

Returns an array containing the names of queries that are currently waiting for results.

queryErrors()

Returns a map of query names to the error they encountered on the last request, if there was one.

refreshQueries([queryNames])

Forces a query to fetch new results. If queryNames is not provided, it will check the status of every query attached to this object.

  • queryNames (optional): A query name, or array of query names. The queries with those names will be refreshed.