Refactoring the code

- Use Flask blueprint
- Split model and views into smaller parts
- Bug fixes
- API adjustment

powerdnsadmin/models/role.py

@@ -0,0 +1,23 @@
+from .base import db
+
+
+class Role(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(64), index=True, unique=True)
+    description = db.Column(db.String(128))
+    users = db.relationship('User', backref='role', lazy=True)
+    apikeys = db.relationship('ApiKey', back_populates='role', lazy=True)
+
+    def __init__(self, id=None, name=None, description=None):
+        self.id = id
+        self.name = name
+        self.description = description
+
+    # allow database autoincrement to do its own ID assignments
+    def __init__(self, name=None, description=None):
+        self.id = None
+        self.name = name
+        self.description = description
+
+    def __repr__(self):
+        return '<Role {0}r>'.format(self.name)