write_back alternative?

[hainesmatt]

I just upgraded and saw that "write_back" has been deprecated. I use this a fair amount in my code, so what's the best (simplest) way of achieving the same thing? Thanks!

[msiemens]

The easiest way would be to use a custom Table class that just adds the removed write_back method. The code can be found here:

tinydb/tinydb/database.py

Lines 494 to 525 in 88d6304

	def write_back(self, documents, doc_ids=None):
	"""
	Write back documents by doc_id
	:param documents: a list of document to write back
	:param doc_ids: a list of document IDs which need to be written back
	:returns: a list of document IDs that have been written
	"""
	if doc_ids is not None and not len(documents) == len(doc_ids):
	raise ValueError(
	'The length of documents and doc_ids is not match.')
	if doc_ids is None:
	doc_ids = [doc.doc_id for doc in documents]
	# Since this function will write docs back like inserting, to ensure
	# here only process existing or removed instead of inserting new,
	# raise error if doc_id exceeded the last.
	if len(doc_ids) > 0 and max(doc_ids) > self._last_id:
	raise IndexError(
	'ID exceeds table length, use existing or removed doc_id.')
	data = self._read()
	# Document specified by ID
	documents.reverse()
	for doc_id in doc_ids:
	data[doc_id] = dict(documents.pop())
	self._write(data)
	return doc_ids

[hainesmatt]

Thank you!