Attachment_fu无法验证的更新

Question

我一直在使用attachment_fu一个项目很长一段时间，一切都很好，但现在，因为我试图把项目多达轨2.3.3我遇到了那个我发疯一个奇怪的错误。附件，在这种情况下一个标志，验证正确的创建，但是，更新不验证失败。我已经调试它，它未能通过验证INTIAL但似乎并没有抛出异常，或者至少不是一个由我在控制器救援抓获。好像我已经尝试了一切，但找不出这一个。

控制器：

  # POST /tournaments
  # POST /tournaments.xml
  def create
    # Build tournament
    @tournament = Tournament.new(params[:tournament].merge(:user_id => current_user.id) )

    # Save the uploaded attachments
    params[:uploads].each do |upload|
      @tournament.documents << Document.new({:uploaded_data => upload[:document]}.merge(:description => upload[:description]))
    end unless params[:uploads].nil?

    # if supplied save an event logo
    @logo = Logo.new({:uploaded_data => params[:logo][:upload_data]}) unless params[:logo].nil? or params[:logo][:upload_data].blank?  
    @tournament.logo = @logo unless @logo.nil?     

    respond_to do |format|
      begin
        Tournament.transaction do    
          @tournament.logo.save! unless @tournament.logo.nil?
          @tournament.save!  
        end
        flash[:notice] = 'Tournament was successfully created.'
        format.html { redirect_to tournament_url(@tournament) }
        format.xml  { head :created, :location => tournament_url(@tournament) }        
      rescue 
          flash[:notice] = 'Errors prevented your Tournament from being saved'
        format.html { render :action => "new" }
        format.xml  { render :xml => @tournament.errors, :status => :unprocessable_entity }
      end
    end
  end

  # PUT /tournaments/1
  # PUT /tournaments/1.xml
  def update
    @tournament = Tournament.find(params[:id])
    @tournament.user_id = session[:orig_user_id]

    respond_to do |format|
      begin
        Tournament.transaction do   
          # Update Logo if necessary
          unless params[:logo][:upload_data].blank?
            @tournament.logo.destroy unless @tournament.logo.nil?
            @tournament.logo = Logo.new({:uploaded_data => params[:logo][:upload_data]}.merge(:user_id => current_user.id)) 
          end   
          # Save any uploaded documents
          params[:uploads].each do |upload|
            @tournament.documents << Document.new({:uploaded_data => upload[:document]}.merge(:description => upload[:description]))
          end unless params[:uploads].nil?   
          # Update Tournamnet Attributes
          @tournament.attributes = params[:tournament]  
          # Save the Tournament
          @tournament.save!         
        end
        flash[:notice] = 'Tournament was successfully updated.' 
        format.html { redirect_to tournament_url(@tournament) }
        format.xml  { head :ok, :location => tournament_url(@tournament) }        
      rescue 
          flash[:notice] = 'Errors prevented your Tournament from being updated' 
        format.html { render :action => "edit" }
        format.xml  { render :xml => @tournament.errors, :status => :unprocessable_entity }
      end
    end
  end  

标志型号：

    class Logo < Asset    

  validate_on_create :attachment_valid? 

  has_attachment :content_type => :image, 
    :storage => :file_system, 
    :max_size => 4.megabytes,
    :resize_to => '810x150>',  
    :processor  => :ImageScience,
    :thumbnails => { :thumb => '270x50>'  }  


  def attachment_valid? 
    content_type = attachment_options[:content_type] 
    unless content_type.nil? || content_type.include?(self.content_type) 
      errors.add(:upload_data, " * must be an image file (jpg, gif, or png)")  
    end 
    size = attachment_options[:size] 
    unless size.nil? || size.include?(self.size)               
      errors.add(:upload_data, "* image must be 4MB or less")  
    end   
  end 


  before_thumbnail_saved do |thumbnail|
    record = thumbnail.parent
    thumbnail.user_id = record.user_id 
    thumbnail.listing_id = record.listing_id
  end

end     

我运行以下

的Rails 2.3.3

image_science 1.2.0

由于 --Tim

Answer 1

您也可以使用：before_save回调测试对象。如果它是无效，产生异常。

Answer 2

尝试添加：

validate_on_update :attachment_valid?