本文整理汇总了Python中django.db.migrations.exceptions.MigrationSchemaMissing方法的典型用法代码示例。如果您正苦于以下问题：Python exceptions.MigrationSchemaMissing方法的具体用法？Python exceptions.MigrationSchemaMissing怎么用？Python exceptions.MigrationSchemaMissing使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类django.db.migrations.exceptions的用法示例。
在下文中一共展示了exceptions.MigrationSchemaMissing方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: check_migrations
# 需要导入模块: from django.db.migrations import exceptions [as 别名]
# 或者: from django.db.migrations.exceptions import MigrationSchemaMissing [as 别名]
def check_migrations(self):
"""
Checks to see if the set of migrations on disk matches the
migrations in the database. Prints a warning if they don't match.
"""
try:
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
except ImproperlyConfigured:
# No databases are configured (or the dummy one)
return
except MigrationSchemaMissing:
self.stdout.write(self.style.NOTICE(
"\nNot checking migrations as it is not possible to access/create the django_migrations table."
))
return
plan = executor.migration_plan(executor.loader.graph.leaf_nodes())
if plan:
self.stdout.write(self.style.NOTICE(
"\nYou have unapplied migrations; your app may not work properly until they are applied."
))
self.stdout.write(self.style.NOTICE("Run 'python manage.py migrate' to apply them.\n"))
# Kept for backward compatibility 示例2: check_migrations
# 需要导入模块: from django.db.migrations import exceptions [as 别名]
# 或者: from django.db.migrations.exceptions import MigrationSchemaMissing [as 别名]
def check_migrations(self):
"""
Print a warning if the set of migrations on disk don't match the
migrations in the database.
"""
from django.db.migrations.executor import MigrationExecutor
try:
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
except ImproperlyConfigured:
# No databases are configured (or the dummy one)
return
except MigrationSchemaMissing:
self.stdout.write(self.style.NOTICE(
"\nNot checking migrations as it is not possible to access/create the django_migrations table."
))
return
plan = executor.migration_plan(executor.loader.graph.leaf_nodes())
if plan:
apps_waiting_migration = sorted(set(migration.app_label for migration, backwards in plan))
self.stdout.write(
self.style.NOTICE(
"\nYou have %(unpplied_migration_count)s unapplied migration(s). "
"Your project may not work properly until you apply the "
"migrations for app(s): %(apps_waiting_migration)s." % {
"unpplied_migration_count": len(plan),
"apps_waiting_migration": ", ".join(apps_waiting_migration),
}
)
)
self.stdout.write(self.style.NOTICE("Run 'python manage.py migrate' to apply them.\n"))