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Diffstat (limited to 'docs/tutorials/wiki2/src/basiclayout')
4 files changed, 127 insertions, 0 deletions
diff --git a/docs/tutorials/wiki2/src/basiclayout/tutorial/alembic/env.py b/docs/tutorials/wiki2/src/basiclayout/tutorial/alembic/env.py new file mode 100644 index 000000000..730785899 --- /dev/null +++ b/docs/tutorials/wiki2/src/basiclayout/tutorial/alembic/env.py @@ -0,0 +1,58 @@ +"""Pyramid bootstrap environment. """ +from alembic import context +from pyramid.paster import get_appsettings, setup_logging + +from tutorial.models import get_engine +from tutorial.models.meta import Base + +config = context.config + +setup_logging(config.config_file_name) + +settings = get_appsettings(config.config_file_name) +target_metadata = Base.metadata + + +def run_migrations_offline(): + """Run migrations in 'offline' mode. + + This configures the context with just a URL + and not an Engine, though an Engine is acceptable + here as well. By skipping the Engine creation + we don't even need a DBAPI to be available. + + Calls to context.execute() here emit the given string to the + script output. + + """ + context.configure(url=settings['sqlalchemy.url']) + with context.begin_transaction(): + context.run_migrations() + + +def run_migrations_online(): + """Run migrations in 'online' mode. + + In this scenario we need to create an Engine + and associate a connection with the context. + + """ + engine = get_engine(settings) + + connection = engine.connect() + context.configure( + connection=connection, + target_metadata=target_metadata + ) + + try: + with context.begin_transaction(): + context.run_migrations() + finally: + connection.close() + + +if context.is_offline_mode(): + run_migrations_offline() +else: + run_migrations_online() diff --git a/docs/tutorials/wiki2/src/basiclayout/tutorial/alembic/script.py.mako b/docs/tutorials/wiki2/src/basiclayout/tutorial/alembic/script.py.mako new file mode 100644 index 000000000..2c0156303 --- /dev/null +++ b/docs/tutorials/wiki2/src/basiclayout/tutorial/alembic/script.py.mako @@ -0,0 +1,24 @@ +"""${message} + +Revision ID: ${up_revision} +Revises: ${down_revision | comma,n} +Create Date: ${create_date} + +""" +from alembic import op +import sqlalchemy as sa +${imports if imports else ""} + +# revision identifiers, used by Alembic. +revision = ${repr(up_revision)} +down_revision = ${repr(down_revision)} +branch_labels = ${repr(branch_labels)} +depends_on = ${repr(depends_on)} + + +def upgrade(): + ${upgrades if upgrades else "pass"} + + +def downgrade(): + ${downgrades if downgrades else "pass"} diff --git a/docs/tutorials/wiki2/src/basiclayout/tutorial/alembic/versions/README.txt b/docs/tutorials/wiki2/src/basiclayout/tutorial/alembic/versions/README.txt new file mode 100644 index 000000000..09ed32c8d --- /dev/null +++ b/docs/tutorials/wiki2/src/basiclayout/tutorial/alembic/versions/README.txt @@ -0,0 +1 @@ +Placeholder for alembic versions
\ No newline at end of file diff --git a/docs/tutorials/wiki2/src/basiclayout/tutorial/scripts/initialize_db.py b/docs/tutorials/wiki2/src/basiclayout/tutorial/scripts/initialize_db.py new file mode 100644 index 000000000..5b129e761 --- /dev/null +++ b/docs/tutorials/wiki2/src/basiclayout/tutorial/scripts/initialize_db.py @@ -0,0 +1,44 @@ +import os +import sys + +from pyramid.paster import bootstrap, setup_logging +from sqlalchemy.exc import OperationalError + +from .. import models + + +def setup_models(dbsession): + model = models.MyModel(name='one', value=1) + dbsession.add(model) + + +def usage(argv): + cmd = os.path.basename(argv[0]) + print('usage: %s <config_uri>\n' + '(example: "%s development.ini")' % (cmd, cmd)) + sys.exit(1) + + +def main(argv=sys.argv): + if len(argv) != 2: + usage(argv) + config_uri = argv[1] + setup_logging(config_uri) + env = bootstrap(config_uri) + + try: + with env['request'].tm: + dbsession = env['request'].dbsession + setup_models(dbsession) + except OperationalError: + print(''' +Pyramid is having a problem using your SQL database. The problem +might be caused by one of the following things: + +1. You may need to initialize your database tables with `alembic`. + Check your README.txt for description and try to run it. + +2. Your database server may not be running. Check that the + database server referred to by the "sqlalchemy.url" setting in + your "development.ini" file is running. + ''') |