change definition of Asphalt as material

src/paveit/datamodels/material.py

@@ -6,7 +6,7 @@ from mongoengine import *
 
 from paveit.helper import fetch_recursive, mongo_to_dict
 
-from .enumeration import BitumenCategoryEnum
+from .enumeration import AsphaltCategoryEnum, BitumenCategoryEnum
 from .norm_documents import (
     NormDocumentAggregate,
     NormDocumentAsphalt,
@@ -62,14 +62,14 @@ class Material(Document):
 
 
 class Asphalt(Material):
-    norm =  LazyReferenceField(NormDocumentAsphalt, required=True)
     
     name = StringField()
-    material = StringField()
-    bitumen = StringField(required=False)
+    producer = StringField()
+    batch_number = StringField()
     
-    young_modulus = DictField()
-    fatigue = DictField()
+    norm =  LazyReferenceField(NormDocumentAsphalt, required=True)
+    
+    limits = LazyReferenceField(EnumerateBase)
 
 # Bitumen 
 class Bitumen(Material):
@@ -126,8 +126,6 @@ class Aggregate(Material):
     
             
 
-
-
 class Dummy(Material):
 
     name = StringField()