MobileRead Forums - View Single Post - For Charles/Chaley Merging user defined metadata

chaley · 07-07-2010, 10:58 AM

Actually, it probably is a few minutes.

Look at the new class library.field_metadata, available as db.field_metadata. This a dict, keyed by the attribute name. The data fetched using the key has everything needed, including the datatype and its column number for fetching and storing the information.

Something like:

Code:

  for key in db.field_metadata:
    if db.field_metadata[key]['is_custom']:
      col_num = db.field_metadata[key]['col_num']
      # now do what is needed, according to type. rec_index is used
      # to get the value you are working with. something like
      from_record_value = db.get_custom(from_id, num=col_num)
      # process ...
      set_custom(to_id, val, num=col_num)

07-07-2010, 10:58 AM	#4
chaley Grand Sorcerer Posts: 12,461 Karma: 8025600 Join Date: Jan 2010 Location: Notts, England Device: Kobo Libra 2	Actually, it probably is a few minutes. Look at the new class library.field_metadata, available as db.field_metadata. This a dict, keyed by the attribute name. The data fetched using the key has everything needed, including the datatype and its column number for fetching and storing the information. Something like: Code: for key in db.field_metadata: if db.field_metadata[key]['is_custom']: col_num = db.field_metadata[key]['col_num'] # now do what is needed, according to type. rec_index is used # to get the value you are working with. something like from_record_value = db.get_custom(from_id, num=col_num) # process ... set_custom(to_id, val, num=col_num)