使用Paperclip上传图片时“未知属性：头像”？

I ran this migration:

我运行了这个迁移:

rails generate paperclip user avatar

It created this migration file:

它创建了这个迁移文件:

class AddAttachmentAvatarToUsers < ActiveRecord::Migration
  def self.up
    change_table :users do |t|
      t.attachment :avatar
    end
  end

  def self.down
    drop_attached_file :users, :avatar
  end
end

I added this to my edit user registration view:

我将其添加到我的编辑用户注册视图中:

<div class="form-group">
  <%= f.label :avatar %> <br>
  <%= f.file_field :avatar, :autofocus => true, class: 'form-control' %>
</div>

When I try to upload an avatar in edit user registration, I receive this error:

当我尝试在编辑用户注册中上传头像时,我收到此错误:

ActiveRecord::UnknownAttributeError in Devise::RegistrationsController#update unknown attribute: avatar

Devise中的ActiveRecord :: UnknownAttributeError :: RegistrationsController #update unknown属性:avatar

EDITS

I added

    def user_params
      params.require(:user).permit(:avatar)
    end

to my user model and now I don't get the error, but now the profile picture just prints out as a link. I think I can find an answer to that.

到我的用户模型,现在我没有得到错误,但现在配置文件图片只是作为链接打印出来。我想我能找到答案。

2 个解决方案

#1

Are you sure you're permitting the :avatar attribute through your controller's permits? Also, have you mentioned the following line of code in your model?

您确定通过控制器许可证允许:avatar属性吗?另外,您是否在模型中提到了以下代码行?

has_attached_file :avatar

#2

Added

def user_params
  params.require(:user).permit(:avatar)
end

to my UsersController to fix the issue.

到我的UsersController来解决问题。

#1