sourcelist = []
for c in blocklist:
oids = c.get('content', []) #orginal array
sorted_list = list(db_source.find({'_id':{'$in':oids}})) #result, has been re-sorted not as aspected
sorted_key = dict(zip(oids, [x for x in range(len(oids))])) #construct a referal array
#sourcelist order resort
for cc in sorted_list:
cc['order'] = sorted_key.get(cc.get('_id')) #add an additional field
sourcelist.append({
'name': c.get('name'),
'content': [to_one_str_source(i) for i in sorted(sorted_list, key=lambda k:k['order'])] #sort by additional field
})
