Update

Use this handler in a POST route with validated email and name parameters.

async function handler(state) {
  var { email, name } = state.req.body.params
  var result = await state.plugins.mongodb
    .collection('users')
    .updateOne({ email }, { $set: { name } })

  return state.jarpc({ ok: true, updated: result.modifiedCount })
}

modifiedCount reports how many documents changed. Use a route schema to require the input fields.

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Update