Function postEvent

app/core/api/events.js:8–11

(options = {})

export const getEventsByUser = uid => fetchJson(`/db/events?userId=${uid}`)

export const postEvent = (options = {}) => fetchJson('/db/event', _.assign({}, {
  method: 'POST',
  json: options
}))

export const updateEvent = (id, options = {}) => fetchJson(`/db/event/${id}`, _.assign({}, {
  method: 'PUT',