我的一种表格遇到间歇性问题。 我已经尝试实现一个批量销毁，它在大多数情况下都可以使用，但是十分之一却无法使用，在控制台中，我收到了一个空的POST请求，没有参数。
这是我的观点：
<h4>Suggestions </h4>
<%= submit_tag "Delete selected", form: "suggestions-delete-form", class: 'btn btn-danger' %>
<p class="card-text">
<% if @suggestions %>
<div class="table-responsive-sm">
<table class="table-sm", id="suggestion-table">
<tbody>
<%= form_tag collection_batch_destroy_path(@collection), method: :post, id: "suggestions-delete-form" do %>
<% @suggestions.each do |s| %>
<tr id='suggestion'>
<th style="width: 4%"><%= check_box_tag "item_ids[]", s.id, false, class: "form-check .selectable-checkbox" %></th>
<td><%if s.search.term.include?("-") %>
<%= Hpricot.uxs s.search.term.capitalize %>
<% else %>
<%= Hpricot.uxs s.search.term.titleize %>
<% end %>
</td>
<td style="width: 4%"><%= link_to fa_icon('plus-circle'), collection_item_choose_path(@collection, s),{ method: :post, class: "btn btn-primary btn-sm text-right" } %>
</td>
<td style="width: 4%" id='delete-suggestion'><%= link_to fa_icon('trash'), collection_item_destroy_path(@collection, s),{ method: :post, class: "btn btn-primary btn-sm text-right" } %><br>
</td>
</tr>
<% end %>
<% end %>
</tbody>
</table>
</div>
<% end %>
</p>
这些是我的路线：
resources :sellers, only: [:show] do
resources :collections, shallow: true do
match 'item/choose', to: 'items#choose', via: 'post'
match 'item/remove', to: 'items#remove', via: 'post'
match 'item/destroy', to: 'items#destroy', via: 'post'
match 'batch_destroy', to: 'items#batch_destroy', via: 'post'
end
end
这是我的控制器：
def batch_destroy
@collection = Collection.find(params[:collection_id])
if params[:item_ids] && params[:item_ids].size > 0
Item.where(id: params[:item_ids]).update_all(suggestion: false)
flash[:success] = "Suggestions successfully deleted"
else
flash[:danger] = "No items were selected"
end
redirect_to collection_path(@collection)
end
这是一个有效的批量销毁示例：
Started POST "/collections/67/batch_destroy" for 127.0.0.1 at 2018-11-07 20:16:19 +0200
Processing by ItemsController#batch_destroy as HTML
Parameters: {"commit"=>"Delete selected", "utf8"=>"✓", "authenticity_token"=>"zEuCw1VX689LwCBcbNsC9JOd2cSVzcc1LxtkFN+xV3I2ORT6r/5aWM8iaNwo5U2LLFF/1lQDIAHQOoVylb4N3A==", "item_ids"=>["12729", "12730", "12731", "12732", "12733", "12735", "12736"], "collection_id"=>"67"}
User Load (0.6ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2 [["id", 1], ["LIMIT", 1]]
Notification Load (0.5ms) SELECT "notifications".* FROM "notifications" WHERE "notifications"."recipient_id" = 1 ORDER BY "notifications"."id" DESC LIMIT $1 [["LIMIT", 3]]
User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT $2 [["id", 1], ["LIMIT", 1]]
Seller Load (0.3ms) SELECT "sellers".* FROM "sellers" WHERE "sellers"."id" = $1 LIMIT $2 [["id", 6], ["LIMIT", 1]]
Shop Load (0.5ms) SELECT "shops".* FROM "shops" WHERE "shops"."id" = $1 LIMIT $2 [["id", 8], ["LIMIT", 1]]
Item Load (0.8ms) SELECT "items".* FROM "items" WHERE "items"."id" IN (12729, 12730, 12731, 12732, 12733, 12735, 12736)
(0.2ms) BEGIN
SQL (0.6ms) UPDATE "items" SET "suggestion" = $1, "updated_at" = $2 WHERE "items"."id" = $3 [["suggestion", "f"], ["updated_at", "2018-11-07 18:16:19.552499"], ["id", 12729]]
(1.1ms) COMMIT
(0.2ms) BEGIN
SQL (0.6ms) UPDATE "items" SET "suggestion" = $1, "updated_at" = $2 WHERE "items"."id" = $3 [["suggestion", "f"], ["updated_at", "2018-11-07 18:16:19.556805"], ["id", 12732]]
(2.2ms) COMMIT
(0.2ms) BEGIN
SQL (0.6ms) UPDATE "items" SET "suggestion" = $1, "updated_at" = $2 WHERE "items"."id" = $3 [["suggestion", "f"], ["updated_at", "2018-11-07 18:16:19.562274"], ["id", 12735]]
(3.2ms) COMMIT
(0.2ms) BEGIN
SQL (0.5ms) UPDATE "items" SET "suggestion" = $1, "updated_at" = $2 WHERE "items"."id" = $3 [["suggestion", "f"], ["updated_at", "2018-11-07 18:16:19.569024"], ["id", 12736]]
(1.3ms) COMMIT
(0.3ms) BEGIN
SQL (1.0ms) UPDATE "items" SET "suggestion" = $1, "updated_at" = $2 WHERE "items"."id" = $3 [["suggestion", "f"], ["updated_at", "2018-11-07 18:16:19.573374"], ["id", 12730]]
(5.1ms) COMMIT
(0.1ms) BEGIN
SQL (0.7ms) UPDATE "items" SET "suggestion" = $1, "updated_at" = $2 WHERE "items"."id" = $3 [["suggestion", "f"], ["updated_at", "2018-11-07 18:16:19.582742"], ["id", 12731]]
(1.0ms) COMMIT
(0.1ms) BEGIN
SQL (0.7ms) UPDATE "items" SET "suggestion" = $1, "updated_at" = $2 WHERE "items"."id" = $3 [["suggestion", "f"], ["updated_at", "2018-11-07 18:16:19.586827"], ["id", 12733]]
(2.9ms) COMMIT
Collection Load (0.3ms) SELECT "collections".* FROM "collections" WHERE "collections"."id" = $1 LIMIT $2 [["id", 67], ["LIMIT", 1]]
Redirected to http://localhost:3000/collections/67
Completed 302 Found in 57ms (ActiveRecord: 26.3ms)
在这里，我正在执行相同的操作（选择一些项目，单击“删除选定的内容”，但结果是：什么都不做：
Started POST "/collections/67/batch_destroy" for 127.0.0.1 at 2018-11-08 09:36:02 +0200
Processing by ItemsController#batch_destroy as HTML
Parameters: {"commit"=>"Delete selected", "collection_id"=>"67"}
User Load (0.6ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2 [["id", 1], ["LIMIT", 1]]
Notification Load (0.7ms) SELECT "notifications".* FROM "notifications" WHERE "notifications"."recipient_id" = 1 ORDER BY "notifications"."id" DESC LIMIT $1 [["LIMIT", 3]]
User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT $2 [["id", 1], ["LIMIT", 1]]
Seller Load (0.5ms) SELECT "sellers".* FROM "sellers" WHERE "sellers"."id" = $1 LIMIT $2 [["id", 6], ["LIMIT", 1]]
Shop Load (0.3ms) SELECT "shops".* FROM "shops" WHERE "shops"."id" = $1 LIMIT $2 [["id", 8], ["LIMIT", 1]]
Item Load (0.5ms) SELECT "items".* FROM "items" WHERE "items"."id" IS NULL
Collection Load (0.2ms) SELECT "collections".* FROM "collections" WHERE "collections"."id" = $1 LIMIT $2 [["id", 67], ["LIMIT", 1]]
Redirected to http://localhost:3000/collections/67
Completed 302 Found in 13ms (ActiveRecord: 3.2ms)
如您所见，尽管选中了一些复选框，但rails并没有传递相应的ID。我还收到Flash消息：“未选择任何项目”。
在开发和生产中都会发生这种情况。 我非常感谢您可能有任何见解。 TIA！
编辑： 刚刚删除了此表单上的will_paginate分页，现在它就像一种魅力。 有人知道是什么原因造成的吗？