fixed the problem of nested attributes for has_many relationships

Author: Sammy Larbi

lib/app/helpers/plupload_helper.rb

@@ -4,6 +4,7 @@ def plupload(model_object, model_object_method, options={})
     options[:max_file_size] ||= 10
     options[:filters] ||= []
     options[:params] ||= {}
+    options[:field_name] ||= [model_object].flatten.pop.class.name.underscore.downcase + "[#{model_object_method}]"
     render :partial=>'plupload/uploader_scripts', :locals=>{
         :model_object=>model_object, 
         :model_object_method=>model_object_method, 

lib/app/middleware/plupload_params_renamer.rb

@@ -9,6 +9,7 @@ def call(env)
     req = Rack::Request.new(env)
     if req.POST["_plupload_upload"]
       object, method = req.params["_plupload_upload"].split(/[\[\]]/)
+      submethod =  req.params["_plupload_upload"].split(/[\[\]]/)[-1]
       req.params[object] ||= {} 
       if req.POST["_plupload_files"]
         req.params[object][method] = []
@@ -21,7 +22,7 @@ def call(env)
 
           uploaded_file = ActionDispatch::Http::UploadedFile.new(:tempfile=>File.new(file), :content_type=>content_type, :filename=>original_filename)
 
-          req.params[object][method] << {:picture=>uploaded_file}
+          req.params[object][method] << {submethod=>uploaded_file}
         end
       else
         req.params[object][method] = req.params["file"] 

lib/app/views/plupload/_uploader_scripts.html.erb

@@ -40,7 +40,7 @@
         {
           authenticity_token : authtoken, 
           "_method" : "<%= [model_object].flatten.pop.new_record? ? 'post' : 'put' %>", 
-          "_plupload_upload" : "<%= [model_object].flatten.pop.class.name.underscore.downcase %>[<%= model_object_method %>]"
+          "_plupload_upload" : "<%= options[:field_name] %>"
         }
       ),
       <% if options[:filters].count > 0 %>