Question

控制器：

   def show
        @user = User.find(params[:id])
        @goal = @user.goals.find(params[:id])
        render :template => 'goals/show'
    end

查看（show.html.erb）：

<%= @goal.text %>

我添加了您好，世界文本，只是为了检查链接是否将显示为show.html.erb。它是。问题是<％= @ goal.text％>变成空白。

已经处理了好几天...非常感谢您的帮助。

在控制器中创建和新建：

    def new
        @user = current_user
        @goal = @user.goals.new

        #for index
        @goal = @user.goals
    end


    def create 
        @user = User.find(params[:id])

        @goal = @user.goals.create(goal_params)

        if @goal.save
            redirect_to new_user_goal_path, notice: "Success!~"
        else 
            redirect_to new_user_goal_path, alert: "Failure!"
        end
    end 

    private
        def goal_params
            params.require(:goal).permit(:text)
        end

我在new.html.erb中列出了目标：

<table>
  <tr>
    <th>Text</th>
    <th></th>
  </tr>

  <% @user.goals.each do |goal| %>
    <tr>
      <td><%= link_to goal.text, goal_path(@user,goal)%></td>
    </tr>
  <% end %>
</table>

<h2>Add a goal:</h2>
<%= form_for([@user, @user.goals.build]) do |form| %>
  <p>
    <%= form.text_area :text %>
  </p>
  <p>
    <%= form.submit %>
  </p>
<% end %>

一点-我一直专注于解决此问题，因此create现在似乎不起作用。我一定在绝望中改变了一些东西。如果可以的话，也请让我知道您在其中看到的错误，我将非常感谢。

也可以路由：

  devise_for :users

  resource :user do
    resources :goals, shallow: true
  end

  devise_scope :user do
    authenticated :user do
      root 'home#index', as: :authenticated_root
    end

    unauthenticated do
      root 'devise/sessions#new', as: :unauthenticated_root
    end
  end

更新：我的架构，以防万一：

ActiveRecord::Schema.define(version: 2019_07_02_174954) do

  # These are extensions that must be enabled in order to support this database
  enable_extension "plpgsql"

  create_table "goals", force: :cascade do |t|
    t.text "text"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.bigint "user_id"
    t.index ["user_id"], name: "index_goals_on_user_id"
  end

  create_table "users", force: :cascade do |t|
    t.string "email", default: "", null: false
    t.string "encrypted_password", default: "", null: false
    t.string "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.index ["email"], name: "index_users_on_email", unique: true
    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
  end

  add_foreign_key "goals", "users"
end

Answer 1

我认为这可能对您有用：

goals_controller.rb：

def new
  @user = current_user
  @goal = Goal.new
end

def create
  @goal = current_user.goals.new(goal_params)
  if @goal.save
    redirect_to new_user_goal_path, notice: "Success!~"
  else
    redirect_to new_user_goal_path, alert: "Failure!"
  end
end

def show
  @goal = Goal.find(params[:id])
end

private
def goal_params
  params.require(:goal).permit(:text)
end

show.html.erb：

<%= @goal.text %>

new.html.erb：

<table>
  <tr>
    <th>Text</th>
    <th></th>
  </tr>

  <% @user.goals.each do |goal| %>
    <tr>
      <td><%= link_to goal.text, goal_path(goal.id)%></td>
    </tr>
  <% end %>
</table>

<h2>Add a goal:</h2>
<%= form_for([@user, @goal]) do |form| %>
  <p>
    <%= form.text_area :text %>
  </p>
  <p>
    <%= form.submit %>
  </p>
<% end %>

这个显示（轨道）代码有什么问题吗？

1 个答案: