feat: add attribute constraints to Museum and City

cubicweb_tuto/schema.py

@@ -17,20 +17,26 @@
 
 """cubicweb-tuto schema"""
 from yams.buildobjs import EntityType, String, Float, SubjectRelation, Int
+from yams.constraints import BoundaryConstraint
 
 
 class Museum(EntityType):
-    name = String()
-    latitude = Float()
-    longitude = Float()
+    name = String(required=True)
+    latitude = Float(
+        constraints=[BoundaryConstraint(">=", -90), BoundaryConstraint("<=", 90)]
+    )
+    longitude = Float(
+        constraints=[BoundaryConstraint(">=", -180), BoundaryConstraint("<=", 180)]
+    )
     is_in = SubjectRelation("City", cardinality="1*")
     director = SubjectRelation("Person", cardinality="**")
     postal_address = String()
 
 
 class City(EntityType):
-    name = String()
+    name = String(required=True)
     zip_code = Int()
+    country = String(default="France")
 
 
 class Person(EntityType):