generalized primary key identification

Author: jonasjabari

lib/matestack/ui/vue_js/components/form/form.js

@@ -99,7 +99,13 @@ const componentDef = {
     removeItem: function(){
       Vue.set(this.data, "_destroy", true)
       this.hideNestedForm = true;
-      if(this.data["id"] == null){
+      var primaryKey;
+      if(this.props["primary_key"] != undefined){
+        primaryKey = this.props["primary_key"];
+      }else{
+        primaryKey = id;
+      }
+      if(this.data[primaryKey] == null){
         this.$parent.deletedNestedNewInstanceFormsCount[this.props["fields_for"]]++;
       }
     },

lib/matestack/ui/vue_js/components/form/form.rb

@@ -56,7 +56,7 @@ def vue_props
                 emit: ctx.emit,
                 delay: ctx.delay,
                 fields_for: ctx.fields_for,
-                new_instance_on_demand: ctx.new_instance_on_demand
+                primary_key: context.for&.class&.primary_key
               }
             end