-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On Mon, Jan 14, 2019 at 04:05:27PM +1100, Lachlan Musicman wrote: > We have two models: Resources and Quota > > Resources model instances include: > - red things > - yellow things > - blue things > > Quota have two fields, one is a FK to a Resource, the other is "desired > quota". > When instantiating the Quota request form, we create a form for each > Resource. > > I'd like to autofill the "desired quota" field on each form, but make it > dependent on which Resource it is representing. > > IE, when someone makes a resource request, we expect them to want > > 1 red thing > 5 yellow things > 10 blue things > > Do some searching, there's a lot pointing to Signals, but I remember > someone once saying "if you are using signals, you should re-write you > logic" or somesuch, so I thought I'd ask here. > > FWIW - and this is well beyond my control - we are on Django 1.8
Hi Lachlan, This sounds like logic that would be triggered by the view handling the form – when you're displaying a new empty form, ask your business logic layer for the default number of things to request in a new “Quota” for that specific resource, and then pass that number to your form as the “initial” argument. Cheers, Michal -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJcPMF3AAoJEHA7T/IPM/kl7aMQAKxO1sPQptRYCDYFzh/7UVLL pBxxHT258Bnd3Oos73U05HQX7cij2Ca0aiJaFFK3nhd8SRl+WAKrzyNT40JBaEGC dXXZrVxU4aUcHWsUKmGsbEXDEejnyGUM2sNU3rVzfs7zBdJl69fHKAFCeRc+iCJ8 ckWb/f0QCzqxEu5mVDC6UVqxWZY5QNws2bJ9zIeWVQZHaAhIeJrmrklKEEbstodi 9QGh64NHNZSn9kgNHiBYP39TKaTxa8QTN0pojB/U0VPt46AUx3Dyq/03GwK/8+mN F4eUViiTntTCFsY0Py6jGh9/Oc8Yx0dRaQfalCj2uq6BSMLzIG+aZ8ubhkLq3DkK 6WvJ/nhhVNRyFjHFjV5lk7R5V/2mOPBFzIuPeWhUDFqYX8RA+SIZyqdZ9iabTxIJ JG5Cp5FYZ0ToteQq8hWZcE9e/ZoB6c/b3aJwQ8MIqcCp8Rmh3cyjVFa1z3r3UJmG j73T15NMwNk9b7g91sfluqhBWtPL31mH/7qTDtNXYC6WWawqCiol7y/Yu0xn2iws xmPUYM4CDkF257t8KJxLzU69qhcB0xtRaqD5F31ioM4S+3WfCpXXmYUk7kPUUDzP 7KMr6s4sMq7BtdVxP4P3NEgfnfmyPkhiFuGX+v9OqV2VdbGTe7UkLuwCeXlD5zBb cY+/1Z/YnrNn+EaspENW =bT81 -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/20190114170600.GW8269%40koniiiik.org. For more options, visit https://groups.google.com/d/optout.
