[chaley]

Originally Posted by Starson17

Charles, two questions:

from_record_value = db.get_custom(from_id, num=col_num)
set_custom(to_id, val, num=col_num)

How do I get/set the series_index associated with a custom field of datatype 'series'?

Get the value with db.get_custom_extra(...)

Set the value with db.set_custom(..., extra=series_index). You set the series and the series_index together. They cannot be set separately.

Is there an easy way to merge tag-like text from two records when is_multiple is True? With tags, it's just:

for tag in from_mi.tags:
   to_mi.tags.append(tag)

Duplicate tags are automatically removed.
Thanks.

Two things:

1) your code does not remove duplicates. The append() method adds the tag to the end of the list (array), with no check for duplicates. I assume that later you call db.set_tags(). That method checks for duplicate tags in the input list, which is why your code works.

There are two ways to deal with duplicates, one with a set and one with 'in' check. The set code works because sets automatically remove duplicates, and would be something like:

to_mi.tags = list(set(to_mi.tags) | set(from_mi.tags))

The list code would look something like:

for tag in from_mi.tags:
    if tag not in to_mi.tags:
       to_mi.tags.append(tag)

If you are willing to let the db code cull the duplicates, then you can use

to_mi.tags.extend(from_mi.tags)

2) The custom code also removes duplicates, so you can use the similar code. It would be something like:

# assume that label contains the column label.
# id must be the id, not the index
tags = db.get_custom(to_mi.id, label=label, index_is_id=True)
tags.extend(db.get_custom(from_mi.id, label=label, index_is_id=True))
db.set_custom(to_mi.id, tags, label=label)