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我添加更多的字段到窗體:KeyError異常/職位鍵:在沒有找到主題:%{變更:#Ecto.Changeset
我加入他們post.ex
field :name_of_gallery, :string
field :future_plans_title, :string
他們加入到變更中stories.ex:
defp post_changeset(%Post{} = post, attrs \\ %{}) do
post
|> cast(attrs, [:title, :body, :user_id, :published, :original_post_id, :topic_id, :plan, :done_so_far_one, :done_so_far_two, :done_so_far_three, :done_so_far_one_title, :done_so_far_two_title, :done_so_far_three_title, :name_of_gallery, :future_plans_title])
|> cast_attachments(attrs, [:project_pic])
|> validate_required([:title, :body, :user_id, :topic_id, :plan, :done_so_far_one, :done_so_far_two, :done_so_far_three, :done_so_far_one_title, :done_so_far_two_title, :done_so_far_three_title, :project_pic, :name_of_gallery, :future_plans_title])
end
了兩個遷移文件(只有一個如圖所示):
defmodule Citybuilder.Repo.Migrations.AddNameOfGalleryToFields do
use Ecto.Migration
def change do
alter table (:stories_posts) do
add :future_plans_title, :string
end
end
end
我跑:
mix ecto.drop
mix ecto.setup
mix ecto.migrate
mix run priv/repo/seeds.exs
...不止一次。
他們在Postgres的,當我檢查的psql:
name_of_gallery |字符變化(255)| future_plans_title |字符改變(255)
*
用戶不能保存形式了。保存用戶表單(這之前的工作)返回:
KeyError at POST /posts
key :topics not found in: %{changeset: #Ecto.Changeset<action: :insert, changes: %{body:
和在線的錯誤:
<%= select f, :topic_id, topic_select(@conn.assigns.topics), class: "form-control form-control-topic", placeholder: "Select topic." %>
我有一個主題選擇菜單,但以前從未引起的問題。
*
整個錯誤消息(請求)是在這裏:
key :topics not found in: %{changeset: #Ecto.Changeset<action: :insert, changes: %{body: "My Project Summary", done_so_far_one: "Done So Far One Body", done_so_far_one_title: "Done So Far One Title", done_so_far_three: "Random Text to Test Form", done_so_far_three_title: "Random Text to Test Form", done_so_far_two: "Random Text to Test Form", done_so_far_two_title: "Random Text to Test Form", name_of_gallery: "Random Text to Test Form", plan: "My Project Plan", project_pic: %{file_name: "person-woman-park-music (1).jpg", updated_at: #Ecto.DateTime<2017-08-08 13:11:46>}, title: "My Project Title", topic_id: 1, user_id: 2}, errors: [future_plans_title: {"can't be blank", [validation: :required]}], data: #Citybuilder.Stories.Post<>, valid?: false>, layout: {Citybuilder.Web.LayoutView, "app.html"}, user: %Citybuilder.Auths.User{__meta__: #Ecto.Schema.Metadata<:loaded, "auths_users">, admin: false, encrypted_password: "$2b$12$MvDVJo01scAyrrBtnT1dpulbuj9uwDnS2ZezFeUhmzol7mJXRBYa6", id: 2, inserted_at: ~N[2017-08-08 12:20:13.948747], moderator: false, password: nil, password_confirmation: nil, updated_at: ~N[2017-08-08 12:20:13.970885], username: "jarvis"}}
用於後控制器的代碼和新的功能位置:
def new(conn, _params) do
default_topic = Stories.get_topic!(@default_topic)
changeset = Stories.change_post(
%Citybuilder.Stories.Post{},
%{topic_id: default_topic.id}
)
render(conn, "new.html", changeset: changeset)
end
def create(conn, %{"post" => post_params}) do
case Stories.create_post(post_params, conn.assigns.user) do
{:ok, post} ->
conn
# |> put_flash(:info, "Post created! ヽ(´▽`)/")
|> redirect(to: post_path(conn, :show, post))
{:error, %Ecto.Changeset{} = changeset} ->
render(conn, "new.html", changeset: changeset)
end
end
我希望看到更多的錯誤消息,以及它崩潰的路線。它看起來像試圖訪問'Ecto.Changeset'結構中不存在的'changeset.topics'。 – narrowtux
它在第78行崩潰,問題的最後一行。 <%= select f,:topic_id,topic_select(@ conn.assigns.topics),class:「form-control form-control-topic」,佔位符:「Select topic。」 %> ...我會粘貼該錯誤。 – RubyRube
你可以發佈你的控制器代碼嗎? – Dogbert