migrations/versions/c141a63b2487_.py

   1 """empty message
   2
   3 Revision ID: c141a63b2487
   4 Revises: cb6ab141c522
   5 Create Date: 2020-07-09 00:05:39.845465
   6
   7 """
   8 from alembic import op
   9 import sqlalchemy as sa
  10 from sqlalchemy import orm, func
  11 from app.models import Package, PackageRelease
  12
  13
  14 # revision identifiers, used by Alembic.
  15 revision = 'c141a63b2487'
  16 down_revision = 'cb6ab141c522'
  17 branch_labels = None
  18 depends_on = None
  19
  20
  21 def upgrade():
  22         op.add_column('package', sa.Column('downloads', sa.Integer(), nullable=False, server_default="0"))
  23
  24         bind = op.get_bind()
  25         session = orm.Session(bind=bind)
  26
  27         for package in session.query(Package).all():
  28                 downloads_result = session.query(func.sum(PackageRelease.downloads)).filter_by(package_id=package.id).one_or_none()
  29                 downloads = 0 if not downloads_result or not downloads_result[0] else downloads_result[0]
  30                 package.downloads = downloads
  31
  32         session.commit()
  33
  34
  35 def downgrade():
  36         # ### commands auto generated by Alembic - please adjust! ###
  37         op.drop_column('package', 'downloads')
  38         # ### end Alembic commands ###