Add image fields for Appliance table

raw, normalized, thumbnail

rattail_tempmon/db/alembic/versions/a2676d3dfc1e_add_appliance_images.py

@@ -0,0 +1,39 @@
+# -*- coding: utf-8; -*-
+"""add appliance images
+
+Revision ID: a2676d3dfc1e
+Revises: 796084026e5b
+Create Date: 2018-10-19 18:27:01.700943
+
+"""
+
+from __future__ import unicode_literals, absolute_import
+
+# revision identifiers, used by Alembic.
+revision = 'a2676d3dfc1e'
+down_revision = u'796084026e5b'
+branch_labels = None
+depends_on = None
+
+from alembic import op
+import sqlalchemy as sa
+import rattail.db.types
+
+
+
+def upgrade():
+
+    # appliance
+    op.add_column('appliance', sa.Column('appliance_type', sa.Integer(), nullable=True))
+    op.add_column('appliance', sa.Column('image_normal', sa.LargeBinary(), nullable=True))
+    op.add_column('appliance', sa.Column('image_raw', sa.LargeBinary(), nullable=True))
+    op.add_column('appliance', sa.Column('image_thumbnail', sa.LargeBinary(), nullable=True))
+
+
+def downgrade():
+
+    # appliance
+    op.drop_column('appliance', 'image_thumbnail')
+    op.drop_column('appliance', 'image_raw')
+    op.drop_column('appliance', 'image_normal')
+    op.drop_column('appliance', 'appliance_type')

rattail_tempmon/db/model.py

@@ -57,10 +57,26 @@ class Appliance(Base):
     Human-friendly (and unique) name for the appliance.
     """)
 
+    appliance_type = sa.Column(sa.Integer(), nullable=True, doc="""
+    Code indicating which "type" of appliance this is.
+    """)
+
     location = sa.Column(sa.String(length=255), nullable=True, doc="""
     Description of the appliance's physical location.
     """)
 
+    image_raw = sa.Column(sa.LargeBinary(), nullable=True, doc="""
+    Byte sequence of the raw image, as uploaded.
+    """)
+
+    image_normal = sa.Column(sa.LargeBinary(), nullable=True, doc="""
+    Byte sequence of the normalized image, i.e. "reasonable" size.
+    """)
+
+    image_thumbnail = sa.Column(sa.LargeBinary(), nullable=True, doc="""
+    Byte sequence of the thumbnail image.
+    """)
+
     def __str__(self):
         return self.name