Function getByIdOrSlug

app/core/api/levels.js:20–23

(idOrSlug, options)

  },

  getByIdOrSlug (idOrSlug, options) {
    if (options == null) { options = {} }
    return fetchJson(`/db/level/${idOrSlug}`, _.merge({}, options))
  },

  fetchForClassroom (classroomID, options = {}) {
    return fetchJson(`/db/classroom/${classroomID}/levels`, _.merge({}, options))