django-postgres-model-constraints 2020.7.1

安装

$ [sudo] pip install django-postgres-model-constraints

优点

适用于具有大量模型的Django项目

• 无需makemigrations和migrate
• 无迁移冲突
• 完整性检查 - 再次删除和创建约束
• 使用原始SQL定义表（可选）

示例

from django.apps import apps
from django_postgres_model_constraints.utils import get_add_foreign_key_constraint_statements, get_add_unique_constraint_statements


for model in apps.get_models():
    statements = get_add_unique_constraint_statements(
        model) + get_add_foreign_key_constraint_statements(model)

from django.apps import apps
from django_postgres_model_constraints.utils import get_drop_foreign_key_constraint_statements, get_drop_unique_constraint_statements


for model in apps.get_models():
    statements = get_drop_foreign_key_constraint_statements(
        model) + get_drop_unique_constraint_statements(model)

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