In my migrations I have specified binary_id: * def change do* * create table(:offers, primary_key: false) do* * add :id, :binary_id, primary_key: true* * add :percentage, :float, null: false* * add :shipment_id, references(:shipments, on_delete: :delete_all, type: :binary_id), null: false*
* timestamps* * end* * create index(:offers, [:shipment_id])* * end* It has been mapped to a UUID column in Postgres. Op donderdag 26 mei 2016 21:03:34 UTC+2 schreef José Valim: > > Can you tell me what is the type of your ID columns in the database and in > your migrations? > > > > *José Valim* > www.plataformatec.com.br > Skype: jv.ptec > Founder and Director of R&D > > On Thu, May 26, 2016 at 8:44 PM, <[email protected] <javascript:>> wrote: > >> My bad, this is rc-5. >> >> Op donderdag 26 mei 2016 20:19:34 UTC+2 schreef José Valim: >>> >>> Which RC version? I believe this may have been fixed on more recent RCs. >>> >>> >>> >>> *José Valim* >>> www.plataformatec.com.br >>> Skype: jv.ptec >>> Founder and Director of R&D >>> >>> On Thu, May 26, 2016 at 8:09 PM, <[email protected]> wrote: >>> >>>> This is Ecto 2.0.0-rc, through phoenix_ecto 3.0.0-rc.0 >>>> >>>> Op donderdag 26 mei 2016 19:51:44 UTC+2 schreef José Valim: >>>>> >>>>> Which Ecto version are you using? >>>>> >>>>> *José Valim* >>>>> www.plataformatec.com.br >>>>> Skype: jv.ptec >>>>> Founder and Director of R&D >>>>> >>>>> On Thu, May 26, 2016 at 6:30 PM, <[email protected]> wrote: >>>>> >>>>>> So I have been digging a little deeper and Ecto is issuing the >>>>>> following query: >>>>>> >>>>>> *SELECT r0."id", *snip*, o1."offer_id" FROM "rates" AS r0 INNER JOIN >>>>>> "offers_rates" AS o1 ON o1."offer_id" = ANY($1) WHERE (o1."rate_id" = >>>>>> r0."id") ORDER BY o1."offer_id" [[<<163, 3, 242, 94, 74, 2, 77, 110, >>>>>> 159, >>>>>> 78, 123, 64, 97, 42, 5, 33>>]]* >>>>>> >>>>>> >>>>>> This comes up as an empty association in my code. When I do the >>>>>> following query in psql however, I do get the result I expect: >>>>>> >>>>>> *SELECT * FROM rates INNER JOIN offers_rates ON >>>>>> offers_rates.offer_id='a303f25e-4a02-4d6e-9f4e-7b40612a0521' WHERE >>>>>> offers_rates.rate_id = rates.id <http://rates.id>; * >>>>>> >>>>>> >>>>>> Does this offer some more insight? >>>>>> >>>>>> Op donderdag 26 mei 2016 18:09:47 UTC+2 schreef [email protected]: >>>>>> >>>>>>> Hi José, >>>>>>> >>>>>>> Thanks for the fast response. That doesn't seem to do it however. If >>>>>>> I do not preload anything, I get an error message saying that the >>>>>>> offers >>>>>>> are not preloaded. If I preload the offers, it says the rates are not >>>>>>> preloaded, and if I preload everything, with force set to true, the >>>>>>> rates >>>>>>> are still empty. Is there anything else I can try? >>>>>>> >>>>>>> Op donderdag 26 mei 2016 17:07:36 UTC+2 schreef José Valim: >>>>>>>> >>>>>>>> Try: >>>>>>>> >>>>>>>> *offers = Repo.preload(shipment, [offers: :rates], force: true)* >>>>>>>> >>>>>>>> If the association was already loaded, we won't load over it. >>>>>>>> >>>>>>>> *José Valim* >>>>>>>> www.plataformatec.com.br >>>>>>>> Skype: jv.ptec >>>>>>>> Founder and Director of R&D >>>>>>>> >>>>>>>> On Thu, May 26, 2016 at 5:05 PM, <[email protected]> wrote: >>>>>>>> >>>>>>>>> Hello, >>>>>>>>> >>>>>>>>> I have a many-to-many relationship defined as follows: >>>>>>>>> >>>>>>>>> * schema "rates" do* >>>>>>>>> * many_to_many :offers, Offer, join_through: "offers_rates"* >>>>>>>>> * end* >>>>>>>>> >>>>>>>>> >>>>>>>>> * schema "offers" do* >>>>>>>>> * many_to_many :rates, Rate, join_through: "offers_rates"* >>>>>>>>> * end * >>>>>>>>> >>>>>>>>> >>>>>>>>> The offers_rates table is simply a table that has a offer_id >>>>>>>>> column, and a rate_id column. I am saving records as follows: >>>>>>>>> >>>>>>>>> * Enum.map rates, fn (rate) ->* >>>>>>>>> * Offer.changeset(%Offer{rates: [rate]}, %{shipment_id: >>>>>>>>> rate.shipment_id, percentage: 1.05})* >>>>>>>>> * |> Repo.insert!()* >>>>>>>>> * end * >>>>>>>>> >>>>>>>>> >>>>>>>>> For every rate, this is generating an offer. I am association the >>>>>>>>> rates with the offer in the changeset. This seems to work as I can >>>>>>>>> see the >>>>>>>>> join table being filled properly. When I try to fetch them later, the >>>>>>>>> association is empty however: >>>>>>>>> >>>>>>>>> *offers = Repo.preload(shipment, offers: :rates)* >>>>>>>>> >>>>>>>>> >>>>>>>>> * %Offer{rates: []} * >>>>>>>>> >>>>>>>>> >>>>>>>>> Are these the proper ways of association records and fetching them >>>>>>>>> from the database again? Any push in the right direction is greatly >>>>>>>>> appreciated. >>>>>>>>> >>>>>>>>> Thanks! >>>>>>>>> >>>>>>>>> -- >>>>>>>>> You received this message because you are subscribed to the Google >>>>>>>>> Groups "elixir-lang-talk" group. >>>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>>> send an email to [email protected]. >>>>>>>>> To view this discussion on the web visit >>>>>>>>> https://groups.google.com/d/msgid/elixir-lang-talk/90e0e96e-a6ca-4111-b4cc-e9d180b99b6b%40googlegroups.com >>>>>>>>> >>>>>>>>> <https://groups.google.com/d/msgid/elixir-lang-talk/90e0e96e-a6ca-4111-b4cc-e9d180b99b6b%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>>>> . >>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "elixir-lang-talk" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected]. >>>>>> To view this discussion on the web visit >>>>>> https://groups.google.com/d/msgid/elixir-lang-talk/589094f3-2694-4b15-9d39-03d8e4869682%40googlegroups.com >>>>>> >>>>>> <https://groups.google.com/d/msgid/elixir-lang-talk/589094f3-2694-4b15-9d39-03d8e4869682%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>> . >>>>>> >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> >>> > -- You received this message because you are subscribed to the Google Groups "elixir-lang-talk" group. 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