在不同的模式外生约束错误

Question

我敢肯定，我失去了一些东西在这里，但我拉我的头发了这一点。我有以下模式的设置：

schema "accounts_providers" do
  field :provider, :string, null: false
  field :uid, :string, null: false
  field :auth_token, Persistence.Encrypted.Binary, null: false

  belongs_to :user, MyApp.Accounts.User
  timestamps()
end

schema "accounts_users" do
  field :name, :string
  field :username, :string
  field :nickname, :string
  field :email, :string
  field :avatar_url, :string

  has_many :providers, Polydoc.Accounts.Provider, on_delete: :delete_all
  timestamps()
end

schema "repositories_repositories" do
  field :name, :string
  field :description, :string
  field :fork, :boolean
  field :private, :boolean
  field :write_permission, :boolean
  field :uid, :string
  field :owner_name, :string

  belongs_to :provider, Polydoc.Accounts.Provider
end

我试图插入一条记录到accounts_providers表，但运行到一个约束错误，但错误的引用存在于repositories_repositories表的约束，我不认为我很感动

[debug] QUERY ERROR db=32.6ms queue=9.5ms
INSERT INTO "accounts_providers" ("auth_token","provider","uid","user_id","inserted_at","updated_at") VALUES ($1,$2,$3,$4,$5,$6) ON CONFLICT ("uid","provider") DO UPDATE SET "id" = EXCLUDED."id","provider" = EXCLUDED."provider","uid" = EXCLUDED."uid","auth_token" = EXCLUDED."auth_token","user_id" = EXCLUDED."user_id","inserted_at" = EXCLUDED."inserted_at","updated_at" = EXCLUDED."updated_at" RETURNING "id" [<<1, 10, 65, 69, 83, 46, 71, 67, 77, 46, 86, 49, 217, 158, 158, 208, 9, 91, 16, 111, 110, 135, 12, 82, 201, 8, 126, 181, 141, 227, 56, 145, 148, 2, 217, 50, 202, 36, 4, 85, 228, 160, 42, 249, 38, 24, 135, 59, 235, ...>>, "github", "1657075", 1, ~N[2019-02-03 09:42:39], ~N[2019-02-03 09:42:39]]
[info] Sent 500 in 1980ms
[error] #PID<0.586.0> running PolydocWeb.Endpoint (cowboy_protocol) terminated
Server: app.lvh.me:4000 (http)
Request: GET /auth/github/callback?code=5bf8f2761b6d3892054f
** (exit) an exception was raised:
    ** (Ecto.ConstraintError) constraint error when attempting to insert struct:

    * repositories_repositories_provider_id_fkey (foreign_key_constraint)

If you would like to stop this constraint violation from raising an
exception and instead add it as an error to your changeset, please
call `foreign_key_constraint/3` on your changeset with the constraint
`:name` as an option.

The changeset defined the following constraints:

    * accounts_providers_user_id_fkey (foreign_key_constraint)
    * accounts_providers_uid_provider_index (unique_constraint)

当我尝试和运行UPSERT查询这是触发：

provider = Provider.oauth_changeset(%Provider{}, attrs)
Repo.insert(provider, on_conflict: :replace_all, conflict_target: [:uid, :provider])

其中provider是

#Ecto.Changeset<
  action: nil,
  changes: %{
    auth_token: "5ab9b61181eb3bc8221310eb4121a861ebb5b0a8",
    provider: "github",
    uid: "1657075",
    user_id: 1
  },
  errors: [],
  data: #Polydoc.Accounts.Provider<>,
  valid?: true
>

任何线索，为什么我打这个错误，即使约束是对另一个表？我知道我没有foreign_key_constraint在我的变更，但这对我来说并没有解释从错误的表上的错误

编辑

下面是该Provider模式的变更功能

def oauth_changeset(%__MODULE__{} = provider, attrs) do
  provider
  |> cast(attrs, [:provider, :uid, :auth_token, :user_id])
  |> validate_required([:provider, :uid, :auth_token])
  |> unique_constraint(:provider_uid, name: :accounts_providers_uid_provider_index)
  |> foreign_key_constraint(:user_id)
end

Answer 1

好它了 - 它涉及到外生处理on_conflict功能的insert/2选择的方式。如果设置为:replace_all为我的是，它的字面取代这将似乎包括主键这反过来又通过使现有记录ID无效打破了我的其他表的外键的一切。

要解决，我已经改变了insert语句包括指定的字段，而不是取代：

Repo.insert(provider,
            on_conflict: { :replace, [:auth_token, :updated_at]},
            conflict_target: [:uid, :provider])