Jquery Carrier未在数据库上保存文件

我一直试图上传一个头像到我的项目模型，但没有成功

我的看法是：

.inbox-body.light-panel
  %span.blue-light-title Look and feel for your projects
  #audit_trail_container
    = form_tag set_project_logo_project_path(project), :method=>:POST do
          .form-control-group
            .separator-div
              .fileuploadadvanced.fileuploadadvanced-new{"data-provides" => "fileuploadadvanced"}
                %span.btn.btn-white.btn-file
                  %span.fileuploadadvanced-new
                    %i.fa.fa-paper-clip
                    Select file
                  %span.fileuploadadvanced-exists
                    %i.fa.fa-undo
                    Change
                  =file_field_tag :avatar, :class => "upload"
                %span.fileuploadadvanced-preview
                %a.close.fileuploadadvanced-exists{"data-dismiss" => "fileuploadadvanced", href: "#"}
      = link_to "Save", "#", :class=> 'btn submit-btn btn-cl-info set_project_logo', :data=> {:project=> project.id}

这将转到jquery：

set_project_logo_action = function() {
    return $(".set_project_logo").on('click', function(event) {
        var checked, project_id, selected, type, uploaded_image;
        project_id = $(this).data('project');
            selected = $("#avatar").val();
            return $.post('/projects/' + project_id + "/set_project_logo", {
                selected: selected,
                type: "file"
            }, function(data) {
                if (data.success) {
                    return document.location.reload(true);
                } else {
                    return alert(data.error);
                }
            });
        } else {
            alert("Select an image to become the logo of the project");
            return event.preventDefault;
        }
    });
};

在项目_控制器上使用以下方法：

def set_project_logo
    set_project
    @project = @project.set_project_logo(params)
    if @project.save
      render :json => {:success => true}
    else
      render :json => {:error => "There was a problem setting the logo."}
    end
  end

最后，在模型上使用此方法：

def set_project_logo(params)
    if params[:selected].present? and params[:type].present?
        self.avatar = params[:selected]
    end
   self
end

在我的模型上，我还有一行：

mount\u uploader:avatar，ProjectAvatarUploader

行

self.avatar=params[：selected]

已执行，但

params[：selected]

为“c:\fakepath..”。所以我猜我遗漏了一些东西，因为在s3上db上也没有保存任何东西

---

有什么帮助吗？

试试self.avatar=params[：selected][：datafile]params[：selected]。读了吗？如果我打印params[：selected]，我会得到以下信息：{“0”=>{“name”=>“utf8”，“value”=>“✓"}, "1“=>{”name“=>”authenticity_token“，”value“=>”1Y9EGZMTHTVKQ6AUNVEZDONOSKAZ0XO3GCRK4XF4C=“}}}谢谢！它正在工作