def merge_data(old, new):
"""Extend the values of the new doc with extra values from the old."""
if is_sequence(old) or is_sequence(new):
new = ensure_list(new)
new.extend(ensure_list(old))
return unique_list(new)
if is_mapping(old) or is_mapping(new):
old = old if is_mapping(old) else {}
new = new if is_mapping(new) else {}
keys = set(new.keys())
keys.update(old.keys())
combined = {}
for key in keys:
value = merge_data(old.get(key), new.get(key))
if value is not None:
combined[key] = value
return combined
return new or old
def merge_docs(old, new):
"""Exend the values of the new doc with extra values from the old."""
old = clean_dict(old)
new = dict(clean_dict(new))
for k, v in old.items():
if k == 'created_at':
new[k] = v
elif k in new:
if is_sequence(v):
v = new[k] + v
new[k] = unique_list(v)
elif isinstance(v, dict):
new[k] = merge_docs(v, new[k])
else:
new[k] = v
return new