I'm trying to create the most efficient way to allow a user to change
the display order of a group of rows in a table.
Lets say the basic table is:
id
group_id
name
sort_order
The query to display it would be
SELECT id, name FROM mytable WHERE group_id = $x ORDER BY sort_order
Now when I display
I wouldn't use a loop but an UPDATE statement instead.
If I understand you correctly, all of your records are in the same group
but you need them displayed in a user-defined order. It would be MUCH
easier to manage that if the sort order values were already in sequential
order. You may need
Michael J. Pawlowsky wrote:
I'm trying to create the most efficient way to allow a user to change
the display order of a group of rows in a table.
Lets say the basic table is:
id
group_id
name
sort_order
The query to display it would be
SELECT id, name FROM mytable WHERE group_id = $x ORDER BY
It would be equally easy to swap any two items in the list, not just two
adjecent items. Just swap sort_order values.
Yup... I think that is the key!
Basically as they are inserted I will look up the max sort_order value
for that group so far and increase that by one for the current insert.
