Question

我正在尝试实施:create行动。这是我的代码库。

defmodule Rumbl.Repo do
  use Ecto.Repo, otp_app: :rumbl
end

表示User.ex型号

defmodule Rumbl.User do

    use Rumbl.Web, :model

    schema "users" do
      field :name, :string
      field :username, :string
      field :password, :string, virtual: true
      field :password_hash, :string

      timestamps()
    end

    def changeset(model, params \\ :empty) do
      model
      |> cast(params, ~w(name username), [])
      |> validate_length(:username, min: 1, max: 20)
    end

end

我的控制员：

defmodule Rumbl.UserController do
    use Rumbl.Web, :controller

    alias Rumbl.Repo
    alias Rumbl.User

    require Logger

    def new(conn, _params) do
        changeset = User.changeset(%User{})
        render conn, "new.html", changeset: changeset
    end

    def create(conn, %{"user" => _params}) do
        changeset = User.changeset(%User{}, _params)
        case Repo.insert changeset do
            {:ok, user} ->
                conn
                |> put_flash(:info, "#{user.name} created!")
                |> redirect to: user_path(conn, :index)
            {:error, changeset} ->
                render conn, "new.html", changeset: changeset
        end
    end

    def index(conn, _params) do
        users = Repo.all(User)
        render conn, "index.html", users: users
    end

    def show(conn, %{"id" => id}) do
      user = Repo.get(User, String.to_integer(id))
      render conn, "show.html", user: user
    end

end

一旦我运行我的凤凰服务器它会打开新页面，当我发送请求时它会给我一个错误：

函数Rumbl.Repo.insert / 1未定义或私有

我错过了什么？

Answer 1

我误解了Elixir的强权力量。实际上要解决我必须写的问题

sef create(conn, %{"user" => user_params}) do
        changeset = User.changeset(%User{}, user_params)
        case Repo.insert changeset do
            {:ok, user} ->
                conn
                |> put_flash(:info, "#{user.name} created!")
                |> redirect to: user_path(conn, :index)
            {:error, changeset} ->
                render conn, "new.html", changeset: changeset
        end
    end

Elixir插入记录给出了未定义的方法

1 个答案: