API - add preference for imperial units conversion

fittrackee/migrations/versions/20_07188ca7620a_add_imperial_units_preferences.py

@@ -0,0 +1,31 @@
+"""add imperial units preferences
+
+Revision ID: 07188ca7620a
+Revises: 080acc8ee956
+Create Date: 2021-11-13 19:11:17.753567
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '07188ca7620a'
+down_revision = '080acc8ee956'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column(
+        'users',
+        sa.Column('imperial_units', sa.Boolean(), nullable=True),
+    )
+    op.execute("UPDATE users SET imperial_units = false")
+    op.alter_column('users', 'imperial_units', nullable=False)
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('users', 'imperial_units')
+    # ### end Alembic commands ###