File to Attach Multiple

[nickh]

Hi all
I have a client that has quite a few fields of type file but after 2 years they have asked if the fields can accept more than one file for upload.
So simple question... is there a way to convert a File field to type Attach Multiple?
Failing a simple solution, does anybody have experience with how to accomplish this task?
Thanks for your consideration.

[esforim]

Dont quote me on this but one trick I get this to work is to just delete the field, recreate it with same name.

[nickh]

Thanks for this.
When you have done this, does it maintain the existing file that is already present and allow more files to be added?

[yuri]

You will need to carry over related_id => parent_id, related_type => parent_type for entries in the attachment table where field = 'yourFileField' AND related_type = 'YourEntityType'.

[nickh]

Thanks Yuri. Very much appreciated.
Sounds quite daunting when there are some 94000 attachments across 11 different fields. May try to encourage them to consider a different solution.

[yuri]

It can be done with an UPDATE SQL query. Not that difficult. Just make sure you did a table backup before running.