add User.lifetime_coupon_id column

app/dashboard/views/lifetime_licence.py

@@ -37,6 +37,7 @@ def lifetime_licence():
         if coupon and coupon.nb_used > 0:
             coupon.nb_used -= 1
             current_user.lifetime = True
+            current_user.lifetime_coupon_id = coupon.id
             if coupon.paid:
                 current_user.paid_lifetime = True
             db.session.commit()

app/models.py

@@ -266,6 +266,11 @@ class User(db.Model, ModelMixin, UserMixin, PasswordOracle):
     paid_lifetime = db.Column(
         db.Boolean, default=False, nullable=False, server_default="0"
     )
+    lifetime_coupon_id = db.Column(
+        db.ForeignKey("lifetime_coupon.id", ondelete="SET NULL"),
+        nullable=True,
+        default=None,
+    )
 
     # user can use all premium features until this date
     trial_end = db.Column(

migrations/versions/2021_100417_0b1c9ea11aef_.py

@@ -0,0 +1,31 @@
+"""empty message
+
+Revision ID: 0b1c9ea11aef
+Revises: 4913cb3f5a05
+Create Date: 2021-10-04 17:14:01.414396
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '0b1c9ea11aef'
+down_revision = '4913cb3f5a05'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('users', sa.Column('lifetime_coupon_id', sa.Integer(), nullable=True))
+    op.create_foreign_key(None, 'users', 'lifetime_coupon', ['lifetime_coupon_id'], ['id'], ondelete='SET NULL')
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'users', type_='foreignkey')
+    op.drop_column('users', 'lifetime_coupon_id')
+    # ### end Alembic commands ###