Question

我试图通过在到达和离开日期填写在同一表格中时向我的控制器发出POST请求来更新表格中的可用客房。

不幸的是，我插入的HTML似乎无法呈现，但是我看不到错误在哪里。

代码

reservations / new.html.erb

<%= simple_form_for [@hotel, @reservation] do |f|%>
  <div class="col col-sm-3">
    <%= f.input :arrival,
    as: :string,
    label:false,
    placeholder: "From",
    wrapper_html: { class: "inline_field_wrapper" },
    input_html:{ id: "start_date"} %>
  </div>
  <div class="col col-sm-3">
    <%= f.input :departure,
    as: :string,
    label:false,
    placeholder: "From",
    wrapper_html: { class: "inline_field_wrapper" },
    input_html:{ id: "end_date"} %>
  </div>

  <div class="col col-sm-4">
    <%= f.input :room_id, collection: @rooms, as: :grouped_select, group_by: proc { |room| room.room_category.name },  label:false %>
    <%#= f.input :room_id, collection: @room_categories.order(:name), as: :grouped_select, group_method: :rooms,  label:false %>
  </div>

  <%= f.button :submit, "Search", class: "create-reservation-btn"%>
<% end %>

reservations / new.html.erb的脚本

<script>
const checkIn = document.querySelector('#start_date');
const checkOut = document.querySelector('#end_date');
const checkInAndOut = [checkIn, checkOut];

checkInAndOut.forEach((item) => {
  item.addEventListener('change', (event) => {
    checkAvailability();
  })
})

  function checkAvailability(){

    $.ajax({
      url: "<%= rooms_availability_hotel_path(@hotel) %>" ,
      dataType: 'json',
      type: "POST",
      data: `arrival=${start_date.value}&departure=${end_date.value}`,
      success: function(data) {
        console.log('succes')
        console.log(data);
      },
      error: function(response) {
        console.log('failure')
        console.log(response);
      }
    });
  };
</script>

hotels_controller

def rooms_availability
  hotel = Hotel.includes(:rooms).find(params[:id])
  arrival = Date.parse room_params[:arrival]
  departure = Date.parse room_params[:departure]
  time_span = arrival..departure
  @unavailable_rooms = Room.joins(:reservations).where(reservations: {hotel: hotel}).where("reservations.arrival <= ? AND ? >= reservations.departure", arrival, departure).distinct
  @hotel_cats = hotel.room_categories
  @hotel_rooms = Room.where(room_category: hotel_cats)
  @rooms = hotel_rooms - @unavailable_rooms
  respond_to do |format|
    format.js
  end
end

def room_params
  params.permit(:arrival, :departure, :format, :id)
end

hotels / rooms_availability.js.erb

var selectList = document.getElementById('reservation_room_id')

function empty() {
  selectList.innerHTML = "";
}

empty();


    <% unless @rooms.empty? %>
      <% @hotel_cats.each do |cat|%>
        selectList.insertAdjacentHTML('beforeend', '<optgroup label=<%= cat.name %>>');
        <% cat.rooms.each do |room|%>
          <% if @rooms.include? room %>
            selectList.insertAdjacentHTML('beforeend', '<option value="<%= room.id %>"><%= room.name %></option>');
          <% end %>
        <% end %>
        selectList.insertAdjacentHTML('beforeend', '<optgroup>');
      <% end %>
    <% end %>

HTML格式的打印屏幕

<div class="form-group grouped_select optional reservation_room_id">
  <select class="grouped_select optional" name="reservation[room_id]" id="reservation_room_id">
      <option value=""></option>
    <optgroup label="room category 1">
        <option value="6">1</option>
        <option value="7">2</option>
        <option value="8">3</option>
    </optgroup>
    <optgroup label="room category 2">
        <option value="16">1</option>
    </optgroup>
  </select>
</div>

日志

Processing by HotelsController#rooms_availability as JS
  Parameters: {"arrival"=>"2019-11-26", "departure"=>"2019-11-27", "id"=>"22"}
  User Load (0.3ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["id", 2], ["LIMIT", 1]]
  ↳ /Users/username/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/activerecord-5.2.3/lib/active_record/log_subscriber.rb:98
  Hotel Load (0.3ms)  SELECT  "hotels".* FROM "hotels" WHERE "hotels"."id" = $1 LIMIT $2  [["id", 22], ["LIMIT", 1]]
  ↳ app/controllers/hotels_controller.rb:125
  CACHE Hotel Load (0.0ms)  SELECT  "hotels".* FROM "hotels" WHERE "hotels"."id" = $1 LIMIT $2  [["id", 22], ["LIMIT", 1]]
  ↳ app/controllers/hotels_controller.rb:103
  RoomCategory Load (0.3ms)  SELECT "room_categories".* FROM "room_categories" WHERE "room_categories"."hotel_id" = $1  [["hotel_id", 22]]
  ↳ app/controllers/hotels_controller.rb:103
  Room Load (0.3ms)  SELECT "rooms".* FROM "rooms" WHERE "rooms"."room_category_id" IN ($1, $2)  [["room_category_id", 4], ["room_category_id", 9]]
  ↳ app/controllers/hotels_controller.rb:103
  Room Load (0.4ms)  SELECT "rooms".* FROM "rooms" WHERE "rooms"."room_category_id" IN (SELECT "room_categories"."id" FROM "room_categories" WHERE "room_categories"."hotel_id" = $1)  [["hotel_id", 22]]
  ↳ app/controllers/hotels_controller.rb:115
  Room Load (1.7ms)  SELECT DISTINCT "rooms".* FROM "rooms" INNER JOIN "reservations" ON "reservations"."room_id" = "rooms"."id" WHERE "reservations"."hotel_id" = $1 AND (reservations.arrival <= '2019-11-26' AND '2019-11-27' >= reservations.departure)  [["hotel_id", 22]]
  ↳ app/controllers/hotels_controller.rb:115
  Rendering hotels/rooms_availability.js.erb
  Rendered hotels/rooms_availability.js.erb (0.6ms)
Completed 200 OK in 53ms (Views: 19.3ms | ActiveRecord: 3.3ms)

表单字段未使用AJAX更新

0 个答案: