I have the following problem. I see that it has been addressed on many
pages but I still have not yet found an answer for this.
How would it be possible to save additional data fields? Right now
cake treats both fields as linking ID's.

"7 - HABTM with additional attributes
I'd love to see an example of HABTM with additional attributes for
CakePHP 1.2.8004.

For the sake of an example to work with, lets take the Recipe/Tags
example and add a "weighting" attribute to the join table. This would
allow a particular Tag for a Recipe to be weighted for the purposes
of.. well, search relevancy. Weighting would be an integer.

The particular example I'd like to see is when a user is maintaining a
Recipe. Even though the Recipe has Tags, and each of those joins has a
weighting, how does one code the form and the controller so that all
the join information maintained between saves (given that _saveMulti
like to delete the contents of the join table before adding it back in
again)."
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