small starting fixes

calling child.type on fieldset controller was giving the name of the
  STI child of DynamicFieldsets::Field, now passing class name directly
children page now prints error messages when update fails
'Back' link on fieldset child now links back to parent 'children' page
rearranged a route b/c fieldset/roots was matching fieldset/:id

app/controllers/dynamic_fieldsets/fieldset_children_controller.rb

@@ -28,7 +28,6 @@ def edit
     # updates the fieldset_child and uses accepts_nested_attributes_for to setup a dependency system
     def update
       @fieldset_child = DynamicFieldsets::FieldsetChild.find(params[:id])
-
       respond_to do |format|
         if @fieldset_child.update_attributes(params[:dynamic_fieldsets_fieldset_child])
           format.html { redirect_to(dynamic_fieldsets_children_dynamic_fieldsets_fieldset_path(@fieldset_child.root_fieldset), :notice => "Successfully updated a child")}

app/controllers/dynamic_fieldsets/fieldsets_controller.rb

@@ -66,7 +66,7 @@ def associate_child
       if(@fieldset_child.nil?)
         @fieldset_child = DynamicFieldsets::FieldsetChild.new(
           :child_id => @field.id, 
-          :child_type => @field.class.name,
+          :child_type => "DynamicFieldsets::Field",
           :fieldset_id => @fieldset.id,
           :order_num => DynamicFieldsets::FieldsetChild.where(:fieldset_id => @fieldset.id).count + 1)
       else
@@ -82,7 +82,7 @@ def associate_child
           end
           format.html { redirect_to(dynamic_fieldsets_children_dynamic_fieldsets_fieldset_path(@fieldset), :notice => notice_text )}
         else
-          format.html { redirect_to(dynamic_fieldsets_children_dynamic_fieldsets_fieldset_path(@fieldset), :notice => "Field was not successsfully associated." )}
+          format.html { redirect_to(dynamic_fieldsets_children_dynamic_fieldsets_fieldset_path(@fieldset), :notice => @fieldset_child.errors) }
         end
       end
     end

app/views/dynamic_fieldsets/fieldset_children/_dependency_fields.html.erb

@@ -1,5 +1,5 @@
 <tr>
-  <td><%= f.select :fieldset_child_id, options_for_select(DynamicFieldsets::FieldsetChild.all.collect { |c| [c.child.name, c.id]}, obj.fieldset_child_id)%></td>
+  <td><%= f.select :fieldset_child_id, options_for_select(DynamicFieldsets::FieldsetChild.all.select { |x| x.child.type != "DynamicFieldsets::InstructionField" }.collect { |c| [c.child.name, c.id]}, obj.fieldset_child_id)%></td>
   <td><%= f.select :relationship, DynamicFieldsets::Dependency::RELATIONSHIP_LIST %></td>
   <td><%= f.text_field :value %></td>
   <td>

app/views/dynamic_fieldsets/form_partials/_select_field.html.erb

@@ -1 +1 @@
-<%= select_tag(name, options_from_collection_for_select( collection, :id, :name, selected_id ), attrs) %>
+<%= select_tag(name, options_from_collection_for_select( collection, :id, :name, selected_id ), attrs.merge({:include_blank => true})) %>

config/routes.rb

@@ -2,8 +2,8 @@
   namespace :dynamic_fieldsets do
     resources :fieldset_associators
 
-    resources :fieldsets
     match "/fieldsets/roots" => "fieldsets#roots"
+    resources :fieldsets
     match "/fieldsets/:id/children" => "fieldsets#children", :as => :children_dynamic_fieldsets_fieldset
     match "/fieldsets/:id/children/reorder" => "fieldsets#reorder"
     match "/fieldsets/new(/:parent)" => "fieldsets#new", :as => :new_dynamic_fieldsets_fieldset