initial checkin

model.py

@@ -0,0 +1,43 @@
+from fields import Field, TextField, MoneyField, StateField
+
+class Model(object):
+    def __init__(self):
+        for (key, value) in self.__class__.__dict__.items():
+            if isinstance(value, Field):
+                field = getattr(self, key)
+                if not field.name:
+                    setattr(field, 'name', key)
+
+    def __setattr__(self, key, value):
+        if hasattr(self, key) and isinstance(getattr(self, key), Field):
+            getattr(self, key).value = value
+        else:
+            self.__dict__[key] = value
+
+    def get_fields(self):
+        fields = []
+        for key in self.__class__.__dict__.keys():
+            attr = getattr(self, key)
+            if isinstance(attr, Field):
+                fields.append(attr)  
+        return fields
+
+    def get_sorted_fields(self):
+        fields = self.get_fields()
+        fields.sort(key=lambda x:x.creation_counter)
+        return fields
+
+    def validate(self):
+        for f in self.get_fields():
+            f.validate()
+
+    def output(self):
+        return ''.join([field.get_data() for field in self.get_sorted_fields()])
+    
+
+        
+class TestModel(Model):
+    field_a = TextField(max_length=20)
+    field_b = MoneyField(max_length=10)
+    state = StateField()
+