use a table to determine what years are previews

MANIFEST.in

 recursive-include compendium_v2/static *
 include compendium_v2/templates/index.html
 include compendium_v2/templates/survey-index.html
-recursive-include compendium_v2/migrations/versions *
 include compendium_v2/migrations/alembic.ini
+recursive-include compendium_v2/migrations/versions *
+recursive-include compendium_v2/migrations/surveymodels *
 recursive-include compendium_v2/background_task/xlsx *
 include compendium_v2/conversion/NREN-Services-prefills_2023_Recovered.xlsx
-include compendium_v2/routes/survey_model.json
 recursive-exclude test *

compendium_v2/db/model.py

@@ -28,6 +28,11 @@ int_pk_fkNREN = Annotated[int, mapped_column(ForeignKey("nren.id"), primary_key=
 # mypy: disable-error-code="name-defined"
 
 
+class PreviewYear(db.Model):
+    __tablename__ = 'preview_year'
+    year: Mapped[int_pk]
+
+
 class NREN(db.Model):
     __tablename__ = 'nren'
     id: Mapped[int_pk]

compendium_v2/migrations/versions/d6f581374e8f_add_preview_year.py

+"""add preview year
+
+Revision ID: d6f581374e8f
+Revises: 96f26bf37f6c
+Create Date: 2023-08-27 20:45:39.740091
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'd6f581374e8f'
+down_revision = '96f26bf37f6c'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('preview_year',
+        sa.Column('year', sa.Integer(), nullable=False),
+        sa.PrimaryKeyConstraint('year', name=op.f('pk_preview_year'))
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('preview_year')
+    # ### end Alembic commands ###

compendium_v2/routes/common.py

@@ -4,7 +4,7 @@ Utilities used by multiple route blueprints.
 import functools
 import logging
 from compendium_v2 import db
-from compendium_v2.db.model import NREN
+from compendium_v2.db.model import NREN, PreviewYear
 
 from flask import Response, request
 from sqlalchemy import select
@@ -65,5 +65,5 @@ def get_data(table_class):
     select_statement = select(table_class).join(NREN).order_by(NREN.name.asc(), table_class.year.desc())
     preview = request.args.get('preview') is not None
     if not preview:
-        select_statement = select_statement.where(table_class.year.not_in([2022]))
+        select_statement = select_statement.where(table_class.year.not_in(select(PreviewYear.year)))
     return db.session.scalars(select_statement)