mergeOrders - cleaning db query with ramda

orders.js

const sampleForRow = row => ({
  id: row.samplesId,
  num: row.samplesNum,
  type: row.samplesType,
  title: sampleTypes[row.samplesType].title
})

const fileForRow = row => ({
  id: row.filesId,
  name: row.filesName,
  mimetype: row.filesMimetype,
  link: `/orders/${row.id}/attachments/${row.filesId}`
})

const onlySamples = R.filter(R.has('samplesId'))
const onlyFiles = R.filter(R.has('filesId'))

const samplesForRows = R.pipe(onlySamples, R.map(sampleForRow))
const filesForRows = R.pipe(onlyFiles, R.map(fileForRow))

const groupById = R.groupBy(R.prop('id'))

const samplesById = R.pipe(groupById, R.map(samplesForRows))
const filesById = R.pipe(groupById, R.map(filesForRows))

const setSamplesAndFiles = (samples, files, orders) => orders.map(
  order => R.merge(order, {
    samples: samples[order.id],
    attachments: files[order.id]
  })
)

const uniqueById = R.uniqWith(R.eqProps('id'))

const fieldsToOmit = [
  'samplesType',
  'samplesId',
  'samplesNum',
  'filesId',
  'filesName',
  'filesMimetype'
]

const mergeOrders = R.pipe(
  R.converge(setSamplesAndFiles, [samplesById, filesById, uniqueById]),
  R.map(R.omit(fieldsToOmit))
)