Add and list environment members

atst/domain/environments.py

@@ -1,5 +1,6 @@
 from atst.database import db
 from atst.models.environment import Environment
+from atst.models.environment_role import EnvironmentRole, CSPRole
 
 
 class Environments(object):
@@ -16,3 +17,13 @@ class Environments(object):
             environment = Environment(project=project, name=name)
             db.session.add(environment)
         db.session.commit()
+
+    @classmethod
+    def add_member(cls, user, environment, member):
+        environment_user = EnvironmentRole(
+            user=member, environment=environment, role=CSPRole.NONSENSE_ROLE.value
+        )
+        db.session.add(environment_user)
+        db.session.commit()
+
+        return environment

atst/models/environment.py

@@ -14,3 +14,7 @@ class Environment(Base, TimestampsMixin):
 
     project_id = Column(ForeignKey("projects.id"))
     project = relationship("Project")
+
+    @property
+    def users(self):
+        return [r.user for r in self.roles]