Question

我尝试使用 has_many到关系在两个不同的表格中保存数据，但只有一个视图但它无效：

我的控制器：

def new
    @group = Group.new
    @group.memberships.build
end

def create
    @group = Group.new(group_params)
    if @group.save
      flash[:success] = "Group created!"
      redirect_to @group
    else
      @feed_items = []
      render 'groups/new'
    end
end

def group_params
    params[:group][:user_id] = current_user.id
    params[:owner] = current_user.id
    params.require(:group).permit(:user_id, :name, :category, :description, memberships_attributes: [:user_id, :group_id, :owner])
end

我的模特：

has_many :memberships
has_many :users, through: :memberships
has_many :posts
accepts_nested_attributes_for :memberships

我的表单：

<%= form_for(@group) do |f| %>
  <%= render 'shared/error_messages', object: f.object %>
  <div class="field">
    <% f.hidden_field :user_id %>
    <%= f.text_area :name, placeholder: "Group's name", class: 'form-control' %>
    <%= f.text_area :category, placeholder: "Category (i.e. #programming, #food, etc)", class: 'form-control' %>
    <%= f.text_area :description, placeholder: "Description of the group", class: 'form-control' %>
  </div>
  <% f.fields_for :memberships do |mem| %>
    <% mem.hidden_field :user_id %>
    <% mem.hidden_field :group_id %>
    <% mem.hidden_field :owner %>
<% end %>
  <%= f.submit "Create", class: "btn btn-primary" %>
<% end %>

我的架构是：

create_table "groups", force: :cascade do |t|
t.integer "user_id"
t.string  "name"
t.string  "category"
t.text    "description"
t.index ["user_id"], name: "index_groups_on_user_id"
end

create_table "memberships", force: :cascade do |t|
t.integer  "user_id"
t.integer  "group_id"
t.integer  "owner"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.index ["group_id"], name: "index_memberships_on_group_id"
t.index ["user_id"], name: "index_memberships_on_user_id"
end

有人可以帮我保存组内的用户信息以及会员资格表中的会员数据和组数据。

这是我的日志：

Started POST "/groups" for 127.0.0.1 at 2017-06-25 00:21:06 -0500
Processing by GroupsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"kOmM3x84+dbS+n4HkdnqMoX4NBlZYohUldCQdSAHJbge0+iAzGhX5KRPQG3sQ5bCV2NDqCCr3bFqvz/lBRChHg==", "group"=>{"name"=>"qqqqq", "category"=>"q", "description"=>"q"}, "commit"=>"Create"}
  User Load (0.5ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT ?  [["id", 2], ["LIMIT", 1]]
   (0.0ms)  begin transaction
  Group Exists (0.5ms)  SELECT  1 AS one FROM "groups" WHERE LOWER("groups"."name") = LOWER(?) LIMIT ?  [["name", "qqqqq"], ["LIMIT", 1]]
  SQL (1.5ms)  INSERT INTO "groups" ("user_id", "name", "category", "description") VALUES (?, ?, ?, ?)  [["user_id", 2], ["name", "qqqqq"], ["category", "q"], ["description", "q"]]
   (12.3ms)  commit transaction
Redirected to http://localhost:3000/groups/19
Completed 302 Found in 34ms (ActiveRecord: 14.8ms)

我的has_many通过数据库不接受数据？

0 个答案: