我正在使用带有paperclip和jQuery-File-Upload的rails 3,它们都是很棒的宝石,但它们似乎不能很好地结合在一起,特别是对于嵌套模型。
在我的应用中,
我有两个模型:submission
和upload
,以及:
**###submssion.rb:**
attr_accessible :email, :uploads_attributes
has_many :uploads, :dependent => :destroy
accepts_nested_attributes_for :uploads, :allow_destroy => true
**###upload.rb:**
belongs_to :submission
has_attached_file :package
include Rails.application.routes.url_helpers
def to_jq_upload
{
"name" => read_attribute(:package_file_name),
"size" => read_attribute(:package_file_size),
"url" => package.url(:original),
"delete_url" => submission_path(self),
"delete_type" => "DELETE"
}
end
以我的形式:
<%= f.fields_for :uploads do |upload| %>
<%= upload.file_field :package %>
<% end %>
在我的控制器中:
def create
@submission = Submission.new(params[:submission])
respond_to do |format|
if @submission.save
format.html { render :json => [@submission.uploads.to_jq_upload].to_json, :content_type => 'text/html',:layout => false }
format.json { render json: [@submission.uploads.to_jq_upload].to_json, status: :created, location: @upload }
else
format.html { render action: "new" }
format.json { render json: @submission.errors, status: :unprocessable_entity}
end
end
end
但是,每次上传文件时,控制台都会给我:
NoMethodError (undefined method `to_jq_upload' for #<ActiveRecord:....
我的问题是:如何在当前模型的控制器中访问另一个模型的方法?
答案 0 :(得分:1)
这是一个解决方法:
由于to_jq_upload
仅在模型upload
中定义,因此您必须指向upload
模型才能使用它,在我的情况下,我正在查看最新的上传,这样:
修订后的create
方法:
def create
@submission = Submission.new(params[:submission])
@upload = @submission.uploads.last
respond_to do |format|
if @submission.save
format.html { render :json => [@upload.to_jq_upload].to_json, :content_type => 'text/html',:layout => false }
format.json { render json: [@upload.to_jq_upload].to_json, status: :created, location: @upload }
else
format.html { render action: "new" }
format.json { render json: @submission.errors, status: :unprocessable_entity }
end
end