凤凰药剂协会

Question

我对Phoenix Elixir中的关联有一个疑问，它发生在插入新客户时，他们之间发生了多个关联，文档架构接收到“ customer_id”以及“联系和债务”架构，所有这些都有效。而且在此事务中，我想将创建的Doc模式的“ doc_id”与Debt模式相关联，这对我不起作用。

客户架构

 defmodule App.Customers.Customer do
  use Ecto.Schema
  import Ecto.Changeset
  alias App.Customers.{ Contact, Doc, Debt }
  alias App.Collections.Collection

  schema "customers" do
    field :codLegal, :string
    field :businessName, :string
    field :fantasyName, :string
    has_many :contacts, Contact
    has_many :docs, Doc
    has_one :collection, Collection 
    has_many :debts, Debt

    timestamps()
  end

  def changeset(customer, attrs \\ %{}) do
    customer
    |> cast(attrs, [:codLegal, :businessName, :fantasyName])
    |> validate_required([:codLegal, :businessName, :fantasyName])
    |> unique_constraint(:codLegal)
    |> cast_assoc(:docs, with: &App.Customers.Doc.changeset/2)
    |> cast_assoc(:contacts, with: &App.Customers.Contact.changeset/2)
    |> cast_assoc(:debts, with: &App.Customers.Debt.changeset/2)
  end
end

文档架构

defmodule App.Customers.Doc do
  use Ecto.Schema
  import Ecto.Changeset
  alias App.Customers.{ Doc, Customer, Debt }
  alias App.Collections.Collection

  schema "docs" do
    field :number, :string
    field :startdate, :date
    field :endate, :date
    field :type, :string
    belongs_to :customer, Customer
    many_to_many :collections, Collection, join_through: "collections_docs"
    has_one :debt, Debt

    timestamps()
  end

  @doc false
  def changeset(doc, attrs) do
    doc
    |> cast(attrs, [:type, :number, :startdate, :endate])
    |> validate_required([:type, :number, :startdate, :endate])
    |> unique_constraint(:number)
    |> cast_assoc(:debt, with: &App.Customers.Debt.changeset/2)
  end
end

债务架构

defmodule App.Customers.Debt do
  use Ecto.Schema
  import Ecto.Changeset
  alias App.Customers.{ Customer, Doc }


  schema "debts" do
    field :credit, :integer
    field :debit, :integer
    belongs_to :doc, Doc
    belongs_to :customer, Customer

    timestamps()
  end

  @doc false
  def changeset(debt, attrs) do
    debt
    |> cast(attrs, [:debit, :credit])
    |> validate_required([:debit])
  end
end