被破壞的物體還在嗎？

“銷毀”方法在我的網站上不起作用。我創建了一個“洗掉”鏈接，但是當我單擊它時，我會被重定向。

這是帶有destroy方法的控制器：

class PostsController < ApplicationController
  def index
    @posts = Post.all
  end

  def show
    @post = Post.find(params[:id])
  end

  def new
    @post = Post.new
  end

  def create
    @post = Post.new(post_params)

    if @post.save
      redirect_to @post
    else
      render :new, status: :unprocessable_entity
    end
  end

  def edit
    @post = Post.find(params[:id])
  end

  def update
    @post = Post.find(params[:id])

    if @post.update(post_params)
      redirect_to @post
    else
      render :edit, status: :unprocessable_entity
    end
  end

  def destroy
    @post = Post.find(params[:id])
    @post.destroy

    redirect_to root_path, status: :see_other
  end

  private
    def post_params
      params.require(:post).permit(:title, :description, :image, :price)
    end
end

沒有什么花哨。這是我的帖子/show.html.erb 視圖中的鏈接：

<%= link_to 'Delete', root_path,
              method: :delete,
              data: { confirm: 'Are you sure?' } %>

不起作用 - 我只是被重定向到根路徑，而我試圖洗掉的帖子仍然存在。

我嘗試在 rails 控制臺中洗掉一個帖子，并且確實有效。

導軌 7.0.4
紅寶石 3??.1.2

單擊本地站點上的“洗掉”鏈接后的服務器輸出：

Started GET "/posts/3" for ::1 at 2022-10-09 23:59:02 -0400
  ActiveRecord::SchemaMigration Pluck (0.2ms)  SELECT "schema_migrations"."version" FROM "schema_migrations" ORDER BY "schema_migrations"."version" ASC
Processing by PostsController#show as HTML
  Parameters: {"id"=>"3"}
  Post Load (0.1ms)  SELECT "posts".* FROM "posts" WHERE "posts"."id" = ? LIMIT ?  [["id", 3], ["LIMIT", 1]]
  ? app/controllers/posts_controller.rb:7:in `show'
  Rendering layout layouts/application.html.erb
  Rendering posts/show.html.erb within layouts/application
  ActiveStorage::Attachment Load (0.1ms)  SELECT "active_storage_attachments".* FROM "active_storage_attachments" WHERE "active_storage_attachments"."record_id" = ? AND "active_storage_attachments"."record_type" = ? AND "active_storage_attachments"."name" = ? LIMIT ?  [["record_id", 3], ["record_type", "Post"], ["name", "image"], ["LIMIT", 1]]
  ? app/views/posts/show.html.erb:11
  ActiveStorage::Blob Load (0.1ms)  SELECT "active_storage_blobs".* FROM "active_storage_blobs" WHERE "active_storage_blobs"."id" = ? LIMIT ?  [["id", 1], ["LIMIT", 1]]
  ? app/views/posts/show.html.erb:12
  Comment Load (0.1ms)  SELECT "comments".* FROM "comments" WHERE "comments"."post_id" = ?  [["post_id", 3]]
  ? app/views/posts/show.html.erb:23
  Rendered collection of templates [0 times] (Duration: 0.0ms | Allocations: 35)
  Rendered comments/_form.html.erb (Duration: 31.1ms | Allocations: 6334)
  Rendered posts/show.html.erb within layouts/application (Duration: 142.9ms | Allocations: 31474)
  Rendered layout layouts/application.html.erb (Duration: 300.1ms | Allocations: 53293)
Completed 200 OK in 402ms (Views: 312.5ms | ActiveRecord: 2.1ms | Allocations: 66385)


Started GET "/rails/active_storage/disk/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaDdDVG9JYTJWNVNTSWhiR28xZVRKamJucHhZM0pxZFhaak9YZGxZelY0ZVdwbGREWnlNZ1k2QmtWVU9oQmthWE53YjNOcGRHbHZia2tpWldsdWJHbHVaVHNnWm1sc1pXNWhiV1U5SW1sc1h6RTFPRGg0VGk0ek1qSTNNRGc0TlRZMVh6SmlkWGd1Y0c1bklqc2dabWxzWlc1aGJXVXFQVlZVUmkwNEp5ZHBiRjh4TlRnNGVFNHVNekl5TnpBNE9EVTJOVjh5WW5WNExuQnVad1k3QmxRNkVXTnZiblJsYm5SZmRIbHdaVWtpRG1sdFlXZGxMM0J1WndZN0JsUTZFWE5sY25acFkyVmZibUZ0WlRvS2JHOWpZV3c9IiwiZXhwIjoiMjAyMi0xMC0xMFQwNDowMTo0My45NDVaIiwicHVyIjoiYmxvYl9rZXkifX0=--00b620d927983a0cba2300d10b1e2234b9306a84/il_1588xN.3227088565_2bux.png" for ::1 at 2022-10-09 23:59:03 -0400
Processing by ActiveStorage::DiskController#show as PNG
  Parameters: {"encoded_key"=>"[FILTERED]", "filename"=>"il_1588xN.3227088565_2bux"}
Completed 304 Not Modified in 7ms (ActiveRecord: 0.0ms | Allocations: 559)

uj5u.com熱心網友回復：

看起來您對 Turbo 或 Rails UJS 有疑問。

這些應該真正起作用并通過javascript發送洗掉請求：

# Turbo
link_to "delete", @post, data: { turbo_method: :delete }

# Rails UJS
link_to "delete", @post, method: :delete

如果您的 javascript 被破壞data并且method屬性被忽略并且您只是單擊一個鏈接來顯示@post，這就是日志中發生的事情。

另一方面：

data-turbo-method從默認 GET 更改鏈接請求型別。理想情況下，非 GET 請求應使用 forms 觸發，但 data-turbo-method 在無法使用表單的情況下可能很有用。

https://turbo.hotwired.dev/reference/attributes

要使用您可以使用的表單觸發DELETEbutton_to請求，它會創建一個小表單，并且 rails 會正確處理路由到destroy操作：

button_to "Delete", @post, method: :delete

https://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-button_to

標籤：轨道上的红宝石红宝石ruby-on-rails-7

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