使用Paperclip和Rails 4无法保存图像

Question

I'm trying to use Paperclip for uploading an image for an has many and belongs to relationship with 'pictures'

I'm certain that imagemagick etc, is correctly installed, because i've more image uploaders in this project that works, difference is that this one has an has many relation.

I'm not getting a 'Saving Attachment' in the console. So my idea is that this is completely ignored by the strong parameters.

In topicscontroller:

params.require(:topic).permit(:id, :title, :content, :active, pictures_attributes: [:image, :id, :_destroy] )

In Topic Model:

has_many :pictures, dependent: :destroy
accepts_nested_attributes_for :pictures, allow_destroy: true
validates :title, :content, presence: true

In Picture Model:

belongs_to :topic

has_attached_file :image,
:styles => { :medium => "400x400#", :thumb => "200x200#", :small => "50x50#" },
:default_url => ActionController::Base.helpers.asset_path('missing.png')

I know that there are many other topics about this, only all are rails 3 and is different in the way of setting 'attr_accessible'

Answer 1

使用Paperclip 3.5.0版本，Rails 4的一切都很好。