没有参数：

Question

我想在没有表格的情况下更新数据。

虽然有类似的问题，但它们对我不起作用。

我想要做的是删除以下数据;

例如，点击删除链接时删除name和address。

id | name | address | ...
12 | aaa  | bbb     | ...

到

id | name | address | ...
12 |      |         | ...

虽然我尝试了一些，但显示了错误。（例如ActionController::RoutingError）

模式

  create_table "rooms", force: :cascade do |t|
    t.string   "name"
    t.text     "address"
    ...

模型

schedule.rb

class Schedule < ActiveRecord::Base
  belongs_to :user
  has_many :rooms, inverse_of: :schedule, dependent: :destroy
  accepts_nested_attributes_for :rooms, allow_destroy: true
  ...

room.rb

class Room < ActiveRecord::Base
  belongs_to :schedule, inverse_of: :rooms
  default_scope -> { order(day: :asc) }
  ...

查看

我想在schedules/_schedule.html.erb中添加链接它有以下几点;

  ...
  <% schedule.rooms.each do |room| %>
  ...
    <% if room.name.present? %>
        <%= link_to "Delete", rooms_path(room, room:{address: nil}) , method: :put, data: { confirm: "You sure?"} %>
  ...

我还尝试了下面的其他代码，但是他们没有工作。

   <%= link_to "Delete", rooms_path(room:{address: nil}) , method: :put, data: { confirm: "You sure?"} %>

   <%= link_to "Delete", rooms_path(room) , method: :put, params: {address: nil}, data: { confirm: "You sure?"} %>

等等。

的routes.rb

...
  resources :schedules do
    resources :events
  end

  resources :schedules do
    resources :rooms
  end

  resources :rooms do
    resources :events
  end
...

rooms_controller.rb

...

def edit
  #nothing
end

def update
  @room = Room.find(params[:id])
  if @room.update(room_params)
    flash[:success] = "Room updated!"
    redirect_to itinerary_path(@room.itinerary) || current_user
  else
    render 'edit'
  end
end

def destroy
  @room = Room.find(params[:id])
  @room.destroy
  flash[:success] = "Room deleted"
  redirect_to schedule_path(@room.schedule) || current_user
end

private

  def room_params
    params.require(:room).permit(
      :id, :_destroy, :name, :address, :schedule_id, :day)
  end

...

如果你能给我任何建议，我将不胜感激。

Answer 1

您需要将rooms_path更改为room_path。

没有参数：

<%= link_to "Delete", room_path(room) , method: :put, data: { confirm: "You sure?"} %>

使用params：

<%= link_to "Delete", room_path(room, room: {name: nil, address: nil}) , method: :put, data: { confirm: "You sure?"} %>

Rails：通过link_to更新数据（不带视图）

1 个答案:

没有参数：

使用params：