fix version sort

Close database connections

CHANGELOG.rst

@@ -4,6 +4,11 @@ ChangeLog
 0.2
 ===
 
+0.2.2
+-----
+- Fix postgres drop fk.
+- Fix version sort.
+
 0.2.1
 -----
 - Fix bug in windows.

README.md

@@ -5,6 +5,8 @@
 [![image](https://github.com/long2ice/aerich/workflows/pypi/badge.svg)](https://github.com/long2ice/aerich/actions?query=workflow:pypi)
 [![image](https://github.com/long2ice/aerich/workflows/test/badge.svg)](https://github.com/long2ice/aerich/actions?query=workflow:test)
 
+<a href="https://tracking.gitads.io/?repo=aerich"><img src="https://images.gitads.io/aerich" alt="GitAds"/></a>
+
 ## Introduction
 
 Tortoise-ORM is the best asyncio ORM now, but it lacks a database

aerich/__init__.py

@@ -1 +1 @@
-__version__ = "0.2.1"
+__version__ = "0.2.2"

aerich/cli.py

@@ -1,3 +1,4 @@
+import functools
 import json
 import os
 import sys
@@ -27,6 +28,16 @@ class Color(str, Enum):
 parser = ConfigParser()
 
 
+def close_db(func):
+    @functools.wraps(func)
+    async def close_db_inner(*args, **kwargs):
+        result = await func(*args, **kwargs)
+        await Tortoise.close_connections()
+        return result
+
+    return close_db_inner
+
+
 @click.group(context_settings={"help_option_names": ["-h", "--help"]})
 @click.version_option(__version__, "-V", "--version")
 @click.option(
@@ -70,6 +81,7 @@ async def cli(ctx: Context, config, app, name):
 @cli.command(help="Generate migrate changes file.")
 @click.option("--name", default="update", show_default=True, help="Migrate name.")
 @click.pass_context
+@close_db
 async def migrate(ctx: Context, name):
     config = ctx.obj["config"]
     location = ctx.obj["location"]
@@ -84,6 +96,7 @@ async def migrate(ctx: Context, name):
 
 @cli.command(help="Upgrade to latest version.")
 @click.pass_context
+@close_db
 async def upgrade(ctx: Context):
     config = ctx.obj["config"]
     app = ctx.obj["app"]
@@ -110,6 +123,7 @@ async def upgrade(ctx: Context):
 
 @cli.command(help="Downgrade to previous version.")
 @click.pass_context
+@close_db
 async def downgrade(ctx: Context):
     app = ctx.obj["app"]
     config = ctx.obj["config"]
@@ -132,6 +146,7 @@ async def downgrade(ctx: Context):
 
 @cli.command(help="Show current available heads in migrate location.")
 @click.pass_context
+@close_db
 async def heads(ctx: Context):
     app = ctx.obj["app"]
     versions = Migrate.get_all_version_files()
@@ -146,7 +161,8 @@ async def heads(ctx: Context):
 
 @cli.command(help="List all migrate items.")
 @click.pass_context
-def history(ctx):
+@close_db
+async def history(ctx: Context):
     versions = Migrate.get_all_version_files()
     for version in versions:
         click.secho(version, fg=Color.green)
@@ -196,6 +212,7 @@ async def init(
     show_default=True,
 )
 @click.pass_context
+@close_db
 async def init_db(ctx: Context, safe):
     config = ctx.obj["config"]
     location = ctx.obj["location"]

aerich/ddl/postgres/__init__.py

@@ -14,6 +14,7 @@ class PostgresDDL(BaseDDL):
     _ALTER_NULL_TEMPLATE = 'ALTER TABLE "{table_name}" ALTER COLUMN "{column}" {set_drop} NOT NULL'
     _MODIFY_COLUMN_TEMPLATE = 'ALTER TABLE "{table_name}" ALTER COLUMN "{column}" TYPE {datatype}'
     _SET_COMMENT_TEMPLATE = 'COMMENT ON COLUMN "{table_name}"."{column}" IS {comment}'
+    _DROP_FK_TEMPLATE = 'ALTER TABLE "{table_name}" DROP CONSTRAINT "{fk_name}"'
 
     def alter_column_default(self, model: "Type[Model]", field_object: Field):
         db_table = model._meta.db_table

aerich/migrate.py

@@ -17,7 +17,7 @@ from tortoise import (
 from tortoise.fields import Field
 
 from aerich.ddl import BaseDDL
-from aerich.models import Aerich
+from aerich.models import MAX_VERSION_LENGTH, Aerich
 from aerich.utils import get_app_connection
 
 
@@ -44,7 +44,10 @@ class Migrate:
 
     @classmethod
     def get_all_version_files(cls) -> List[str]:
-        return sorted(filter(lambda x: x.endswith("json"), os.listdir(cls.migrate_location)))
+        return sorted(
+            filter(lambda x: x.endswith("json"), os.listdir(cls.migrate_location)),
+            key=lambda x: x.split("_")[0],
+        )
 
     @classmethod
     async def get_last_version(cls) -> Aerich:
@@ -89,7 +92,10 @@ class Migrate:
         last_version_num = await cls._get_last_version_num()
         if last_version_num is None:
             return f"0_{now}_init.json"
-        return f"{last_version_num + 1}_{now}_{name}.json"
+        version = f"{last_version_num + 1}_{now}_{name}.json"
+        if len(version) > MAX_VERSION_LENGTH:
+            raise ValueError(f"Version name exceeds maximum length ({MAX_VERSION_LENGTH})")
+        return version
 
     @classmethod
     async def _generate_diff_sql(cls, name):

aerich/models.py

@@ -1,8 +1,10 @@
 from tortoise import Model, fields
 
+MAX_VERSION_LENGTH = 255
+
 
 class Aerich(Model):
-    version = fields.CharField(max_length=50)
+    version = fields.CharField(max_length=MAX_VERSION_LENGTH)
     app = fields.CharField(max_length=20)
 
     class Meta:

poetry.lock

@@ -18,7 +18,10 @@ description = "asyncio bridge to the standard sqlite3 module"
 name = "aiosqlite"
 optional = false
 python-versions = ">=3.6"
-version = "0.13.0"
+version = "0.15.0"
+
+[package.dependencies]
+typing_extensions = "*"
 
 [[package]]
 category = "main"
@@ -26,10 +29,11 @@ description = "High level compatibility layer for multiple asynchronous event lo
 name = "anyio"
 optional = false
 python-versions = ">=3.5.3"
-version = "1.3.1"
+version = "1.4.0"
 
 [package.dependencies]
 async-generator = "*"
+idna = ">=2.8"
 sniffio = ">=1.1"
 
 [package.extras]
@@ -222,6 +226,10 @@ mccabe = ">=0.6.0,<0.7.0"
 pycodestyle = ">=2.6.0a1,<2.7.0"
 pyflakes = ">=2.2.0,<2.3.0"
 
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
+
 [[package]]
 category = "dev"
 description = "Git Object Database"
@@ -239,11 +247,35 @@ description = "Python Git Library"
 name = "gitpython"
 optional = false
 python-versions = ">=3.4"
-version = "3.1.3"
+version = "3.1.7"
 
 [package.dependencies]
 gitdb = ">=4.0.1,<5"
 
+[[package]]
+category = "main"
+description = "Internationalized Domain Names in Applications (IDNA)"
+name = "idna"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "2.10"
+
+[[package]]
+category = "dev"
+description = "Read metadata from Python packages"
+marker = "python_version < \"3.8\""
+name = "importlib-metadata"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+version = "1.7.0"
+
+[package.dependencies]
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "rst.linker"]
+testing = ["packaging", "pep517", "importlib-resources (>=1.3)"]
+
 [[package]]
 category = "main"
 description = "Simple module to parse ISO 8601 dates"
@@ -258,7 +290,7 @@ description = "A Python utility / library to sort Python imports."
 name = "isort"
 optional = false
 python-versions = ">=3.6,<4.0"
-version = "5.0.3"
+version = "5.1.3"
 
 [package.extras]
 pipfile_deprecated_finder = ["pipreqs", "requirementslib", "tomlkit (>=0.5.3)"]
@@ -316,6 +348,11 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 version = "0.13.1"
 
+[package.dependencies]
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12"
+
 [package.extras]
 dev = ["pre-commit", "tox"]
 
@@ -349,7 +386,7 @@ description = "Data validation and settings management using python 3.6 type hin
 name = "pydantic"
 optional = false
 python-versions = ">=3.6"
-version = "1.5.1"
+version = "1.6.1"
 
 [package.extras]
 dotenv = ["python-dotenv (>=0.10.4)"]
@@ -389,7 +426,7 @@ description = "A SQL query builder API for Python"
 name = "pypika"
 optional = false
 python-versions = "*"
-version = "0.37.15"
+version = "0.37.16"
 
 [[package]]
 category = "dev"
@@ -409,6 +446,10 @@ pluggy = ">=0.12,<1.0"
 py = ">=1.5.0"
 wcwidth = "*"
 
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12"
+
 [package.extras]
 checkqa-mypy = ["mypy (v0.761)"]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
@@ -444,7 +485,7 @@ description = "pytest xdist plugin for distributed testing and loop-on-failing m
 name = "pytest-xdist"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "1.32.0"
+version = "1.33.0"
 
 [package.dependencies]
 execnet = ">=1.1"
@@ -469,7 +510,7 @@ description = "Alternative regular expression module, to replace re."
 name = "regex"
 optional = false
 python-versions = "*"
-version = "2020.6.8"
+version = "2020.7.14"
 
 [[package]]
 category = "main"
@@ -501,11 +542,15 @@ description = "Manage dynamic plugins for Python applications"
 name = "stevedore"
 optional = false
 python-versions = ">=3.6"
-version = "2.0.1"
+version = "3.2.0"
 
 [package.dependencies]
 pbr = ">=2.0.0,<2.1.0 || >2.1.0"
 
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=1.7.0"
+
 [[package]]
 category = "dev"
 description = "Python Library for Tom's Obvious, Minimal Language"
@@ -555,12 +600,25 @@ optional = false
 python-versions = "*"
 version = "0.2.5"
 
+[[package]]
+category = "dev"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+marker = "python_version < \"3.8\""
+name = "zipp"
+optional = false
+python-versions = ">=3.6"
+version = "3.1.0"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
+testing = ["jaraco.itertools", "func-timeout"]
+
 [extras]
 dbdrivers = ["aiomysql", "asyncpg"]
 
 [metadata]
-content-hash = "485702557f7b65db14e44d459fb1c985f56caf4b14857006ef96304d6516d976"
-python-versions = "^3.8"
+content-hash = "2e02de89517b7461909007ef09e1697e78a4202ffe086444e6027a0a91db58b7"
+python-versions = "^3.7"
 
 [metadata.files]
 aiomysql = [
@@ -568,12 +626,12 @@ aiomysql = [
     {file = "aiomysql-0.0.20.tar.gz", hash = "sha256:d89ce25d44dadb43cf2d9e4603bd67b7a0ad12d5e67208de013629ba648df2ba"},
 ]
 aiosqlite = [
-    {file = "aiosqlite-0.13.0-py3-none-any.whl", hash = "sha256:50688c40632ae249f986ab3ae2c66a45c0535b84a5d4aae0e0be572b5fed6909"},
-    {file = "aiosqlite-0.13.0.tar.gz", hash = "sha256:6e92961ae9e606b43b05e29b129e346b29e400fcbd63e3c0c564d89230257645"},
+    {file = "aiosqlite-0.15.0-py3-none-any.whl", hash = "sha256:19b984b6702aed9f1c85c023f37296954547fc4030dae8e9d027b2a930bed78b"},
+    {file = "aiosqlite-0.15.0.tar.gz", hash = "sha256:a2884793f4dc8f2798d90e1dfecb2b56a6d479cf039f7ec52356a7fd5f3bdc57"},
 ]
 anyio = [
-    {file = "anyio-1.3.1-py3-none-any.whl", hash = "sha256:f21b4fafeec1b7db81e09a907e44e374a1e39718d782a488fdfcdcf949c8950c"},
-    {file = "anyio-1.3.1.tar.gz", hash = "sha256:a46bb2b7743455434afd9adea848a3c4e0b7321aee3e9d08844b11d348d3b5a0"},
+    {file = "anyio-1.4.0-py3-none-any.whl", hash = "sha256:9ee67e8131853f42957e214d4531cee6f2b66dda164a298d9686a768b7161a4f"},
+    {file = "anyio-1.4.0.tar.gz", hash = "sha256:95f60964fc4583f3f226f8dc275dfb02aefe7b39b85a999c6d14f4ec5323c1d8"},
 ]
 apipkg = [
     {file = "apipkg-1.5-py2.py3-none-any.whl", hash = "sha256:58587dd4dc3daefad0487f6d9ae32b4542b185e1c36db6993290e7c41ca2b47c"},
@@ -701,8 +759,16 @@ gitdb = [
     {file = "gitdb-4.0.5.tar.gz", hash = "sha256:c9e1f2d0db7ddb9a704c2a0217be31214e91a4fe1dea1efad19ae42ba0c285c9"},
 ]
 gitpython = [
-    {file = "GitPython-3.1.3-py3-none-any.whl", hash = "sha256:ef1d60b01b5ce0040ad3ec20bc64f783362d41fa0822a2742d3586e1f49bb8ac"},
-    {file = "GitPython-3.1.3.tar.gz", hash = "sha256:e107af4d873daed64648b4f4beb89f89f0cfbe3ef558fc7821ed2331c2f8da1a"},
+    {file = "GitPython-3.1.7-py3-none-any.whl", hash = "sha256:fa3b92da728a457dd75d62bb5f3eb2816d99a7fe6c67398e260637a40e3fafb5"},
+    {file = "GitPython-3.1.7.tar.gz", hash = "sha256:2db287d71a284e22e5c2846042d0602465c7434d910406990d5b74df4afb0858"},
+]
+idna = [
+    {file = "idna-2.10-py2.py3-none-any.whl", hash = "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"},
+    {file = "idna-2.10.tar.gz", hash = "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6"},
+]
+importlib-metadata = [
+    {file = "importlib_metadata-1.7.0-py2.py3-none-any.whl", hash = "sha256:dc15b2969b4ce36305c51eebe62d418ac7791e9a157911d58bfb1f9ccd8e2070"},
+    {file = "importlib_metadata-1.7.0.tar.gz", hash = "sha256:90bb658cdbbf6d1735b6341ce708fc7024a3e14e99ffdc5783edea9f9b077f83"},
 ]
 iso8601 = [
     {file = "iso8601-0.1.12-py2.py3-none-any.whl", hash = "sha256:210e0134677cc0d02f6028087fee1df1e1d76d372ee1db0bf30bf66c5c1c89a3"},
@@ -710,8 +776,8 @@ iso8601 = [
     {file = "iso8601-0.1.12.tar.gz", hash = "sha256:49c4b20e1f38aa5cf109ddcd39647ac419f928512c869dc01d5c7098eddede82"},
 ]
 isort = [
-    {file = "isort-5.0.3-py3-none-any.whl", hash = "sha256:3fbfad425b0a08a2969c5e1821d88785c210a08656c029c28931a1620f2d0f12"},
-    {file = "isort-5.0.3.tar.gz", hash = "sha256:4c48d4cd773a6226baaaa176839e6f7ff82ef7c7842f6c54374fe2b14df4024b"},
+    {file = "isort-5.1.3-py3-none-any.whl", hash = "sha256:001ab55382453892ddb6956f65c6331f610041eed7ddc9c6bdf7975cb504f66f"},
+    {file = "isort-5.1.3.tar.gz", hash = "sha256:9be41d107294ddf25ef6af83979cb3dfa1b5752311b6d50611c8f8d321d4a4eb"},
 ]
 mccabe = [
     {file = "mccabe-0.6.1-py2.py3-none-any.whl", hash = "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42"},
@@ -750,23 +816,23 @@ pycparser = [
     {file = "pycparser-2.20.tar.gz", hash = "sha256:2d475327684562c3a96cc71adf7dc8c4f0565175cf86b6d7a404ff4c771f15f0"},
 ]
 pydantic = [
-    {file = "pydantic-1.5.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:2a6904e9f18dea58f76f16b95cba6a2f20b72d787abd84ecd67ebc526e61dce6"},
-    {file = "pydantic-1.5.1-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:da8099fca5ee339d5572cfa8af12cf0856ae993406f0b1eb9bb38c8a660e7416"},
-    {file = "pydantic-1.5.1-cp36-cp36m-manylinux2014_i686.whl", hash = "sha256:68dece67bff2b3a5cc188258e46b49f676a722304f1c6148ae08e9291e284d98"},
-    {file = "pydantic-1.5.1-cp36-cp36m-manylinux2014_x86_64.whl", hash = "sha256:ab863853cb502480b118187d670f753be65ec144e1654924bec33d63bc8b3ce2"},
-    {file = "pydantic-1.5.1-cp36-cp36m-win_amd64.whl", hash = "sha256:2007eb062ed0e57875ce8ead12760a6e44bf5836e6a1a7ea81d71eeecf3ede0f"},
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+    {file = "pydantic-1.6.1-cp38-cp38-manylinux2014_i686.whl", hash = "sha256:6c3f162ba175678218629f446a947e3356415b6b09122dcb364e58c442c645a7"},
+    {file = "pydantic-1.6.1-cp38-cp38-manylinux2014_x86_64.whl", hash = "sha256:eb75dc1809875d5738df14b6566ccf9fd9c0bcde4f36b72870f318f16b9f5c20"},
+    {file = "pydantic-1.6.1-cp38-cp38-win_amd64.whl", hash = "sha256:530d7222a2786a97bc59ee0e0ebbe23728f82974b1f1ad9a11cd966143410633"},
+    {file = "pydantic-1.6.1-py36.py37.py38-none-any.whl", hash = "sha256:b5b3489cb303d0f41ad4a7390cf606a5f2c7a94dcba20c051cd1c653694cb14d"},
+    {file = "pydantic-1.6.1.tar.gz", hash = "sha256:54122a8ed6b75fe1dd80797f8251ad2063ea348a03b77218d73ea9fe19bd4e73"},
 ]
 pyflakes = [
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@@ -781,7 +847,7 @@ pyparsing = [
     {file = "pyparsing-2.4.7.tar.gz", hash = "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1"},
 ]
 pypika = [
-    {file = "PyPika-0.37.15.tar.gz", hash = "sha256:f00c217330d91bbb5bc26c4cb54a8016b899fb8d5a8f7cb25b30861260fa4239"},
+    {file = "PyPika-0.37.16.tar.gz", hash = "sha256:42b86fc00d767fe8d4d3d82acb3b55f76b32c211cc5dff9337fc0fbfe3d121cb"},
 ]
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@@ -796,8 +862,8 @@ pytest-forked = [
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 ]
 pytest-xdist = [
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-    {file = "pytest_xdist-1.32.0-py2.py3-none-any.whl", hash = "sha256:ba5ec9fde3410bd9a116ff7e4f26c92e02fa3d27975ef3ad03f330b3d4b54e91"},
+    {file = "pytest-xdist-1.33.0.tar.gz", hash = "sha256:833b902b16473162cc0572d5bd7b63f8b843df63a4ada9c8af1270d31db17607"},
+    {file = "pytest_xdist-1.33.0-py2.py3-none-any.whl", hash = "sha256:9149b4010240643a5e206fd0ece6f0a1cd5955dae014cf04610d359e22e22453"},
 ]
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@@ -813,27 +879,26 @@ pyyaml = [
     {file = "PyYAML-5.3.1.tar.gz", hash = "sha256:b8eac752c5e14d3eca0e6dd9199cd627518cb5ec06add0de9d32baeee6fe645d"},
 ]
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+    {file = "regex-2020.7.14-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:bbb332d45b32df41200380fff14712cb6093b61bd142272a10b16778c418e98e"},
+    {file = "regex-2020.7.14-cp38-cp38-manylinux2010_i686.whl", hash = "sha256:c11d6033115dc4887c456565303f540c44197f4fc1a2bfb192224a301534888e"},
+    {file = "regex-2020.7.14-cp38-cp38-win32.whl", hash = "sha256:d6cff2276e502b86a25fd10c2a96973fdb45c7a977dca2138d661417f3728341"},
+    {file = "regex-2020.7.14-cp38-cp38-win_amd64.whl", hash = "sha256:7a2dd66d2d4df34fa82c9dc85657c5e019b87932019947faece7983f2089a840"},
+    {file = "regex-2020.7.14.tar.gz", hash = "sha256:3a3af27a8d23143c49a3420efe5b3f8cf1a48c6fc8bc6856b03f638abc1833bb"},
 ]
 six = [
     {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
@@ -848,8 +913,8 @@ sniffio = [
     {file = "sniffio-1.1.0.tar.gz", hash = "sha256:8e3810100f69fe0edd463d02ad407112542a11ffdc29f67db2bf3771afb87a21"},
 ]
 stevedore = [
-    {file = "stevedore-2.0.1-py3-none-any.whl", hash = "sha256:c4724f8d7b8f6be42130663855d01a9c2414d6046055b5a65ab58a0e38637688"},
-    {file = "stevedore-2.0.1.tar.gz", hash = "sha256:609912b87df5ad338ff8e44d13eaad4f4170a65b79ae9cb0aa5632598994a1b7"},
+    {file = "stevedore-3.2.0-py3-none-any.whl", hash = "sha256:c8f4f0ebbc394e52ddf49de8bcc3cf8ad2b4425ebac494106bbc5e3661ac7633"},
+    {file = "stevedore-3.2.0.tar.gz", hash = "sha256:38791aa5bed922b0a844513c5f9ed37774b68edc609e5ab8ab8d8fe0ce4315e5"},
 ]
 toml = [
     {file = "toml-0.10.1-py2.py3-none-any.whl", hash = "sha256:bda89d5935c2eac546d648028b9901107a595863cb36bae0c73ac804a9b4ce88"},
@@ -890,3 +955,7 @@ wcwidth = [
     {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
     {file = "wcwidth-0.2.5.tar.gz", hash = "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"},
 ]
+zipp = [
+    {file = "zipp-3.1.0-py3-none-any.whl", hash = "sha256:aa36550ff0c0b7ef7fa639055d797116ee891440eac1a56f378e2d3179e0320b"},
+    {file = "zipp-3.1.0.tar.gz", hash = "sha256:c599e4d75c98f6798c509911d08a22e6c021d074469042177c8c86fb92eefd96"},
+]

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "aerich"
-version = "0.2.1"
+version = "0.2.2"
 description = "A database migrations tool for Tortoise ORM."
 authors = ["long2ice <long2ice@gmail.com>"]
 license = "Apache-2.0"
@@ -15,7 +15,7 @@ packages = [
 include = ["CHANGELOG.rst", "LICENSE", "README.md"]
 
 [tool.poetry.dependencies]
-python = "^3.8"
+python = "^3.7"
 tortoise-orm = "*"
 asyncclick = "*"
 pydantic = "*"

tests/test_ddl.py

@@ -179,5 +179,7 @@ def test_drop_fk():
     ret = Migrate.ddl.drop_fk(Category, Category._meta.fields_map.get("user"))
     if isinstance(Migrate.ddl, MysqlDDL):
         assert ret == "ALTER TABLE `category` DROP FOREIGN KEY `fk_category_user_e2e3874c`"
+    elif isinstance(Migrate.ddl, PostgresDDL):
+        assert ret == 'ALTER TABLE "category" DROP CONSTRAINT "fk_category_user_e2e3874c"'
     else:
         assert ret == 'ALTER TABLE "category" DROP FOREIGN KEY "fk_category_user_e2e3874c"'