make User.name nullable

app/models.py

@@ -176,7 +176,7 @@ class User(db.Model, ModelMixin, UserMixin):
     salt = db.Column(db.String(128), nullable=True)
     password = db.Column(db.String(128), nullable=True)
 
-    name = db.Column(db.String(128), nullable=False)
+    name = db.Column(db.String(128), nullable=True)
     is_admin = db.Column(db.Boolean, nullable=False, default=False)
     alias_generator = db.Column(
         db.Integer,

migrations/versions/2021_011110_1b54995bc086_.py

@@ -0,0 +1,33 @@
+"""empty message
+
+Revision ID: 1b54995bc086
+Revises: e99989e6ad56
+Create Date: 2021-01-11 10:23:51.674493
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '1b54995bc086'
+down_revision = 'e99989e6ad56'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('users', 'name',
+               existing_type=sa.VARCHAR(length=128),
+               nullable=True)
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('users', 'name',
+               existing_type=sa.VARCHAR(length=128),
+               nullable=False)
+    # ### end Alembic commands ###