Question

所以我已经在这里问了这个问题： previous question 并没有得到太多帮助，我在寻找其他与我类似的问题，但没有解决方法。因此，我将再次询问该问题，以期寻求帮助。问题是为用户个人资料横幅上传的图像没有显示在用户显示页面（也称为个人资料页面）上。我正在使用活动存储。我已经有了

has_on_attached：banner_image

.profile-header
  = image_tag url_for(@user.banner_image)

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

设计注册配置：

def configure_account_update_params
  before_action :configure_account_update_params, only: [:update]
  devise_parameter_sanitizer.permit(:sign_up, keys: [:firstname, :banner_image])
end

error msg image

刷新个人资料页面时读取终端：

Started GET "/users/1" for ::1 at 2019-09-20 21:51:59 -0700
Processing by UsersController#show as HTML
  Parameters: {"id"=>"1"}
  User Load (0.3ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT ?  [["id", 1], ["LIMIT", 1]]
  ↳ app/controllers/users_controller.rb:11
  Rendering users/show.html.haml within layouts/application
  ActiveStorage::Attachment Load (0.2ms)  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", 1], ["record_type", "User"], ["name", "banner_image"], ["LIMIT", 1]]
  ↳ app/views/users/show.html.haml:2
  Listing Load (0.1ms)  SELECT "listings".* FROM "listings" WHERE "listings"."user_id" = ?  [["user_id", 1]]
  ↳ app/views/users/show.html.haml:5
  Rendered users/show.html.haml within layouts/application (5.5ms)
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? ORDER BY "users"."id" ASC LIMIT ?  [["id", 1], ["LIMIT", 1]]
  ↳ app/views/layouts/_navigation.html.haml:18
  Rendered layouts/_navigation.html.haml (8.7ms)
Completed 200 OK in 61ms (Views: 57.8ms | ActiveRecord: 0.7ms)

Answer 1

已解决的问题：

  # If you have extra params to permit, append them to the sanitizer.
  def configure_sign_up_params
    devise_parameter_sanitizer.permit(:sign_up, keys: [:firstname, :image])
  end

  # If you have extra params to permit, append them to the sanitizer.
  def configure_account_update_params
    devise_parameter_sanitizer.permit(:account_update, keys: [:firstname, :image])
  end

因此， configure_account_update_params 设置被设置为允许：signup不允许：account_update。我将其更改为：account_update并成功了！

Answer 2

您似乎没有该用户的横幅图像。如果由于用户没有横幅而导致视图布局中断，请在代码中使用条件if

image_tag url_for(@user.banner_image) if @user.banner_image.present?

或者您可能想要一个后备图片来保留布局

image_tag url_for(@user.banner_image || '/public/fallback_banner_image.jpg')

上面的例子是一个例子，但是您需要包含一个实际的文件图像/路径

to_model委托给附件，但附件为nil

2 个答案: