app/assets/javascripts/formagic/inputs/documents.coffee in formagic-0.1.0 vs app/assets/javascripts/formagic/inputs/documents.coffee in formagic-0.2.5

@@ -26,15 +26,20 @@
 
 class @InputForm
   constructor: (@name, @nestedObjects, @config, @object) ->
     @forms = []
 
-    @config.namePrefix   ||= name
-    @config.removeButton   = true
-    @config.formSchema._id = { type: 'hidden', name: 'id' }
+    @config.namePrefix         ||= name
+    @config.removeButton         = if @config.disableRemoveDocuments then false else true
+    @config.ignoreOnSubmission ||= false
+
     @reorderContainerClass = "nested-forms-#{@config.klassName}"
 
+    if @config.ignoreOnSubmission
+      for key, inputConfig of @config.formSchema
+        inputConfig.ignoreOnSubmission = true
+
     @_create_el()
 
     @_add_label()
     @_add_forms()
     @_add_new_button()
@@ -53,11 +58,25 @@
     @$errorMessage =$ "<span class='error-message'></span>"
     @$label.append(@$errorMessage)
     @$el.append(@$label)
 
 
+  _extend_schema_with: (name, config) ->
+    schemaConfig = {}
+    schemaConfig[name] = config
+    @config.formSchema = $.extend(schemaConfig, @config.formSchema)
+
+
   _add_forms: ->
+    # add id to schema
+    # @NOTE: here we use _id, cause mongosteen returns objects _id, but we should send id for nested documents
+    @_extend_schema_with('_id', { type: 'hidden', name: 'id', ignoreOnSubmission: @config.ignoreOnSubmission })
+
+    # add position to schema
+    if @config.sortBy
+      @_extend_schema_with(@config.sortBy, { type: 'hidden', ignoreOnSubmission: @config.ignoreOnSubmission })
+
     @$forms =$ "<ul>"
     @$label.after @$forms
 
     # if not default value which means no objects
     if @nestedObjects != ''
@@ -70,11 +89,10 @@
       @_bind_forms_reorder()
 
 
   _sort_nested_objects: ->
     if @config.sortBy
-      @config.formSchema[@config.sortBy] = { type: 'hidden' }
       if @nestedObjects
         # this is not required but make things a bit easier on the backend
         # as object don't have to be in a specific order.
         @nestedObjects.sort (a, b) => parseFloat(a[@config.sortBy]) - parseFloat(b[@config.sortBy])
         # normalizes nested objects positions
@@ -91,16 +109,19 @@
 
     return form
 
 
   _add_new_button: ->
-    label = @config.newButtonLabel || "Add"
-    @$newButton =$ """<a href='#' class='nested-form-new'>#{ label }</a>"""
-    @$el.append @$newButton
-    @$newButton.on 'click', (e) => e.preventDefault() ; @addNewForm()
+    if ! @config.disableNewDocuments
+      label = @config.newButtonLabel || "Add"
 
+      @$newButton =$ """<a href='#' class='nested-form-new'>#{ label }</a>"""
+      @$el.append @$newButton
 
+      @$newButton.on 'click', (e) => e.preventDefault() ; @addNewForm()
+
+
   # PUBLIC ================================================
 
   initialize: ->
     @config.beforeInitialize?(this)
 
@@ -139,15 +160,12 @@
     if @config.sortBy
       @_add_form_reorder_button(form)
       prevForm = _last(@forms)
       position = if prevForm then prevForm.inputs[@config.sortBy].value + 1 else 1
 
-      # @TODO: having an issue here for scenario when no nested object are there for new object
-      # form.inputs doesn't include sortBy field
-      console.log @config
-      console.log @config.sortBy
-      console.log form.inputs
+      # Had a problem here for new documents, but now seems to be resolved by adding
+      # _position to schema in constructor (to be removed when stable).
 
       form.inputs[@config.sortBy].updateValue(position)
 
     @forms.push(form)
 
@@ -155,12 +173,20 @@
 
     return form
 
 
   updateValue: (@nestedObjects, @object) ->
+    # New document should update id, also after uploading images form for existing
+    # document might change, so we reset all nested forms to reflect these updates.
+    # This implementation has some problems with jumping screen when using plugins
+    # also it requires complex implementation for data local storage caching.
     @$forms.remove()
     @forms = []
     @_add_forms()
+
+    # Initialize input plugins after update
+    for nestedForm in @forms
+      nestedForm.initializePlugins()
 
 
 include(InputForm, inputFormReorder)