Merge pull request #111 from lqmanh/bugfixes/fix-tortoise-orm-0.16.19

Fix Aerich b/c of a new feature in Tortoise ORM v0.16.19

CHANGELOG.md

@@ -2,6 +2,15 @@
 
 ## 0.4
 
+### 0.4.4
+
+- Fix unnecessary import. (#113)
+
+### 0.4.3
+
+- Replace migrations separator to sql standard comment.
+- Add `inspectdb` command.
+
 ### 0.4.2
 
 - Use `pathlib` for path resolving. (#89)

README.md

@@ -7,8 +7,8 @@
 
 ## Introduction
 
-Aerich is a database migrations tool for Tortoise-ORM, which like alembic for SQLAlchemy, or Django ORM with it\'s
+Aerich is a database migrations tool for Tortoise-ORM, which like alembic for SQLAlchemy, or Django ORM with it\'s own
-own migrations solution.
+migrations solution.
 
 **Important: You can only use absolutely import in your `models.py` to make `aerich` work.**
 
@@ -40,14 +40,14 @@ Commands:
   history    List all migrate items.
   init       Init config file and generate root migrate location.
   init-db    Generate schema and generate app migrate location.
+  inspectdb  Introspects the database tables to standard output as...
   migrate    Generate migrate changes file.
   upgrade    Upgrade to latest version.
 ```
 
 ## Usage
 
-You need add `aerich.models` to your `Tortoise-ORM` config first,
+You need add `aerich.models` to your `Tortoise-ORM` config first, example:
-example:
 
 ```python
 TORTOISE_ORM = {
@@ -109,7 +109,8 @@ Success migrate 1_202029051520102929_drop_column.sql
 Format of migrate filename is
 `{version_num}_{datetime}_{name|update}.sql`.
 
-And if `aerich` guess you are renaming a column, it will ask `Rename {old_column} to {new_column} [True]`, you can choice `True` to rename column without column drop, or choice `False` to drop column then create.
+And if `aerich` guess you are renaming a column, it will ask `Rename {old_column} to {new_column} [True]`, you can
+choice `True` to rename column without column drop, or choice `False` to drop column then create.
 
 ### Upgrade to latest version
 
@@ -163,6 +164,33 @@ Now your db rollback to specified version.
 1_202029051520102929_drop_column.sql
 ```
 
+### Inspect db tables to TortoiseORM model
+
+```shell
+Usage: aerich inspectdb [OPTIONS]
+
+  Introspects the database tables to standard output as TortoiseORM model.
+
+Options:
+  -t, --table TEXT  Which tables to inspect.
+  -h, --help        Show this message and exit.
+```
+
+Inspect all tables and print to console:
+
+```shell
+aerich --app models inspectdb -t user 
+```
+
+Inspect a specified table in default app and redirect to `models.py`:
+
+```shell
+aerich inspectdb -t user > models.py
+```
+
+Note that this command is restricted, which is not supported in some solutions, such as `IntEnumField`
+and `ForeignKeyField` and so on.
+
 ### Multiple databases
 
 ```python
@@ -173,7 +201,7 @@ tortoise_orm = {
     },
     "apps": {
         "models": {"models": ["tests.models", "aerich.models"], "default_connection": "default"},
-        "models_second": {"models": ["tests.models_second"], "default_connection": "second",},
+        "models_second": {"models": ["tests.models_second"], "default_connection": "second", },
     },
 }
 ```

aerich/__init__.py

@@ -1 +1 @@
-__version__ = "0.4.2"
+__version__ = "0.4.4"

aerich/cli.py

@@ -4,6 +4,7 @@ import sys
 from configparser import ConfigParser
 from functools import wraps
 from pathlib import Path
+from typing import List
 
 import click
 from click import Context, UsageError
@@ -12,6 +13,7 @@ from tortoise.exceptions import OperationalError
 from tortoise.transactions import in_transaction
 from tortoise.utils import get_schema_sql
 
+from aerich.inspectdb import InspectDb
 from aerich.migrate import Migrate
 from aerich.utils import (
     get_app_connection,
@@ -238,8 +240,7 @@ async def init(
     with open(config_file, "w", encoding="utf-8") as f:
         parser.write(f)
 
-    if not Path(location).is_dir():
+    Path(location).mkdir(parents=True, exist_ok=True)
-        os.mkdir(location)
 
     click.secho(f"Success create migrate location {location}", fg=Color.green)
     click.secho(f"Success generate config file {config_file}", fg=Color.green)
@@ -261,10 +262,10 @@ async def init_db(ctx: Context, safe):
     app = ctx.obj["app"]
 
     dirname = Path(location, app)
-    if not dirname.is_dir():
+    try:
-        os.mkdir(dirname)
+        dirname.mkdir(parents=True)
         click.secho(f"Success create app migrate location {dirname}", fg=Color.green)
-    else:
+    except FileExistsError:
         return click.secho(
             f"Inited {app} already, or delete {dirname} and try again.", fg=Color.yellow
         )
@@ -288,6 +289,25 @@ async def init_db(ctx: Context, safe):
     click.secho(f'Success generate schema for app "{app}"', fg=Color.green)
 
 
+@cli.command(help="Introspects the database tables to standard output as TortoiseORM model.")
+@click.option(
+    "-t",
+    "--table",
+    help="Which tables to inspect.",
+    multiple=True,
+    required=False,
+)
+@click.pass_context
+@coro
+async def inspectdb(ctx: Context, table: List[str]):
+    config = ctx.obj["config"]
+    app = ctx.obj["app"]
+    connection = get_app_connection(config, app)
+
+    inspect = InspectDb(connection, table)
+    await inspect.inspect()
+
+
 def main():
     sys.path.insert(0, ".")
     cli()

aerich/inspectdb.py

@@ -0,0 +1,85 @@
+import sys
+from typing import List, Optional
+
+from ddlparse import DdlParse
+from tortoise import BaseDBAsyncClient
+
+
+class InspectDb:
+    _table_template = "class {table}(Model):\n"
+    _field_template_mapping = {
+        "INT": "    {field} = fields.IntField({pk}{unique}{comment})",
+        "SMALLINT": "    {field} = fields.IntField({pk}{unique}{comment})",
+        "TINYINT": "    {field} = fields.BooleanField({null}{default}{comment})",
+        "VARCHAR": "    {field} = fields.CharField({pk}{unique}{length}{null}{default}{comment})",
+        "LONGTEXT": "    {field} = fields.TextField({null}{default}{comment})",
+        "TEXT": "    {field} = fields.TextField({null}{default}{comment})",
+        "DATETIME": "    {field} = fields.DatetimeField({null}{default}{comment})",
+    }
+
+    def __init__(self, conn: BaseDBAsyncClient, tables: Optional[List[str]] = None):
+        self.conn = conn
+        self.tables = tables
+        self.DIALECT = conn.schema_generator.DIALECT
+
+    async def show_create_tables(self):
+        if self.DIALECT == "mysql":
+            if not self.tables:
+                sql_tables = f"SELECT table_name FROM information_schema.tables WHERE table_schema = '{self.conn.database}';"  # nosec: B608
+                ret = await self.conn.execute_query(sql_tables)
+                self.tables = map(lambda x: x["TABLE_NAME"], ret[1])
+            for table in self.tables:
+                sql_show_create_table = f"SHOW CREATE TABLE {table}"
+                ret = await self.conn.execute_query(sql_show_create_table)
+                yield ret[1][0]["Create Table"]
+        else:
+            raise NotImplementedError("Currently only support MySQL")
+
+    async def inspect(self):
+        ddl_list = self.show_create_tables()
+        result = "from tortoise import Model, fields\n\n\n"
+        tables = []
+        async for ddl in ddl_list:
+            parser = DdlParse(ddl, DdlParse.DATABASE.mysql)
+            table = parser.parse()
+            name = table.name.title()
+            columns = table.columns
+            fields = []
+            model = self._table_template.format(table=name)
+            for column_name, column in columns.items():
+                comment = default = length = unique = null = pk = ""
+                if column.primary_key:
+                    pk = "pk=True, "
+                if column.unique:
+                    unique = "unique=True, "
+                if column.data_type == "VARCHAR":
+                    length = f"max_length={column.length}, "
+                if not column.not_null:
+                    null = "null=True, "
+                if column.default is not None:
+                    if column.data_type == "TINYINT":
+                        default = f"default={'True' if column.default == '1' else 'False'}, "
+                    elif column.data_type == "DATETIME":
+                        if "CURRENT_TIMESTAMP" in column.default:
+                            if "ON UPDATE CURRENT_TIMESTAMP" in ddl:
+                                default = "auto_now_add=True, "
+                            else:
+                                default = "auto_now=True, "
+                    else:
+                        default = f"default={column.default}, "
+
+                if column.comment:
+                    comment = f"description='{column.comment}', "
+
+                field = self._field_template_mapping[column.data_type].format(
+                    field=column_name,
+                    pk=pk,
+                    unique=unique,
+                    length=length,
+                    null=null,
+                    default=default,
+                    comment=comment,
+                )
+                fields.append(field)
+            tables.append(model + "\n".join(fields))
+        sys.stdout.write(result + "\n\n\n".join(tables))

aerich/migrate.py

@@ -5,6 +5,7 @@ from datetime import datetime
 from importlib import import_module
 from io import StringIO
 from pathlib import Path
+from types import ModuleType
 from typing import Dict, List, Optional, Tuple, Type
 
 import click
@@ -210,6 +211,9 @@ class Migrate:
         old_model_files = []
         models = config.get("apps").get(app).get("models")
         for model in models:
+            if isinstance(model, ModuleType):
+                module = model
+            else:
                 module = import_module(model)
             possible_models = [getattr(module, attr_name) for attr_name in dir(module)]
             for attr in filter(

aerich/utils.py

@@ -58,8 +58,8 @@ def get_tortoise_config(ctx: Context, tortoise_orm: str) -> dict:
     return config
 
 
-_UPGRADE = "##### upgrade #####\n"
+_UPGRADE = "-- upgrade --\n"
-_DOWNGRADE = "##### downgrade #####\n"
+_DOWNGRADE = "-- downgrade --\n"
 
 
 def get_version_content_from_file(version_file: str) -> Dict:

conftest.py

@@ -36,7 +36,7 @@ def reset_migrate():
     Migrate._downgrade_m2m = []
 
 
-@pytest.yield_fixture(scope="session")
+@pytest.fixture(scope="session")
 def event_loop():
     policy = asyncio.get_event_loop_policy()
     res = policy.new_event_loop()

poetry.lock

@@ -1,13 +1,13 @@
 [[package]]
 name = "aiomysql"
-version = "0.0.20"
+version = "0.0.21"
 description = "MySQL driver for asyncio."
 category = "main"
 optional = true
 python-versions = "*"
 
 [package.dependencies]
-PyMySQL = ">=0.9,<=0.9.2"
+PyMySQL = ">=0.9,<=0.9.3"
 
 [package.extras]
 sa = ["sqlalchemy (>=1.0)"]
@@ -76,16 +76,16 @@ tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>
 
 [[package]]
 name = "bandit"
-version = "1.6.2"
+version = "1.7.0"
 description = "Security oriented static analyser for python code."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.5"
 
 [package.dependencies]
 colorama = {version = ">=0.3.9", markers = "platform_system == \"Windows\""}
 GitPython = ">=1.0.1"
-PyYAML = ">=3.13"
+PyYAML = ">=5.3.1"
 six = ">=1.10.0"
 stevedore = ">=1.20.0"
 
@@ -111,17 +111,6 @@ typing-extensions = ">=3.7.4"
 colorama = ["colorama (>=0.4.3)"]
 d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
 
-[[package]]
-name = "cffi"
-version = "1.14.4"
-description = "Foreign Function Interface for Python calling C code."
-category = "main"
-optional = true
-python-versions = "*"
-
-[package.dependencies]
-pycparser = "*"
-
 [[package]]
 name = "click"
 version = "7.1.2"
@@ -139,23 +128,15 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
-name = "cryptography"
+name = "ddlparse"
-version = "3.2.1"
+version = "1.9.0"
-description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
+description = "DDL parase and Convert to BigQuery JSON schema"
 category = "main"
-optional = true
+optional = false
-python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
+python-versions = "*"
 
 [package.dependencies]
-cffi = ">=1.8,<1.11.3 || >1.11.3"
+pyparsing = "*"
-six = ">=1.4.1"
-
-[package.extras]
-docs = ["sphinx (>=1.6.5,!=1.8.0,!=3.1.0,!=3.1.1)", "sphinx-rtd-theme"]
-docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
-pep8test = ["black", "flake8", "flake8-import-order", "pep8-naming"]
-ssh = ["bcrypt (>=3.1.5)"]
-test = ["pytest (>=3.6.0,!=3.9.0,!=3.9.1,!=3.9.2)", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,!=3.79.2)"]
 
 [[package]]
 name = "execnet"
@@ -209,18 +190,19 @@ gitdb = ">=4.0.1,<5"
 
 [[package]]
 name = "importlib-metadata"
-version = "3.1.0"
+version = "3.3.0"
 description = "Read metadata from Python packages"
 category = "dev"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
+typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
 zipp = ">=0.5"
 
 [package.extras]
-docs = ["sphinx", "rst.linker"]
+docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
-testing = ["packaging", "pep517", "unittest2", "importlib-resources (>=1.3)"]
+testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "jaraco.test (>=3.2.0)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
 
 [[package]]
 name = "iniconfig"
@@ -269,7 +251,7 @@ python-versions = "*"
 
 [[package]]
 name = "packaging"
-version = "20.4"
+version = "20.8"
 description = "Core utilities for Python packages"
 category = "dev"
 optional = false
@@ -277,7 +259,6 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [package.dependencies]
 pyparsing = ">=2.0.2"
-six = "*"
 
 [[package]]
 name = "pathspec"
@@ -311,7 +292,7 @@ dev = ["pre-commit", "tox"]
 
 [[package]]
 name = "py"
-version = "1.9.0"
+version = "1.10.0"
 description = "library with cross-python path, ini-parsing, io, code, log facilities"
 category = "dev"
 optional = false
@@ -325,17 +306,9 @@ category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
-[[package]]
-name = "pycparser"
-version = "2.20"
-description = "C parser in Python"
-category = "main"
-optional = true
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-
 [[package]]
 name = "pydantic"
-version = "1.7.2"
+version = "1.7.3"
 description = "Data validation and settings management using python 3.6 type hinting"
 category = "main"
 optional = false
@@ -356,26 +329,26 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "pymysql"
-version = "0.9.2"
+version = "0.9.3"
 description = "Pure Python MySQL Driver"
 category = "main"
 optional = true
 python-versions = "*"
 
-[package.dependencies]
+[package.extras]
-cryptography = "*"
+rsa = ["cryptography"]
 
 [[package]]
 name = "pyparsing"
 version = "2.4.7"
 description = "Python parsing module"
-category = "dev"
+category = "main"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "pypika"
-version = "0.44.0"
+version = "0.44.1"
 description = "A SQL query builder API for Python"
 category = "main"
 optional = false
@@ -383,25 +356,24 @@ python-versions = "*"
 
 [[package]]
 name = "pytest"
-version = "6.1.2"
+version = "6.2.1"
 description = "pytest: simple powerful testing with Python"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
 
 [package.dependencies]
 atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
-attrs = ">=17.4.0"
+attrs = ">=19.2.0"
 colorama = {version = "*", markers = "sys_platform == \"win32\""}
 importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 iniconfig = "*"
 packaging = "*"
-pluggy = ">=0.12,<1.0"
+pluggy = ">=0.12,<1.0.0a1"
 py = ">=1.8.2"
 toml = "*"
 
 [package.extras]
-checkqa_mypy = ["mypy (==0.780)"]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
 [[package]]
@@ -432,7 +404,7 @@ pytest = ">=3.10"
 
 [[package]]
 name = "pytest-mock"
-version = "3.3.1"
+version = "3.4.0"
 description = "Thin-wrapper around the mock package for easier use with pytest"
 category = "dev"
 optional = false
@@ -446,7 +418,7 @@ dev = ["pre-commit", "tox", "pytest-asyncio"]
 
 [[package]]
 name = "pytest-xdist"
-version = "2.1.0"
+version = "2.2.0"
 description = "pytest xdist plugin for distributed testing and loop-on-failing modes"
 category = "dev"
 optional = false
@@ -489,7 +461,7 @@ python-versions = "*"
 name = "six"
 version = "1.15.0"
 description = "Python 2 and 3 compatibility utilities"
-category = "main"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 
@@ -503,7 +475,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "stevedore"
-version = "3.2.2"
+version = "3.3.0"
 description = "Manage dynamic plugins for Python applications"
 category = "dev"
 optional = false
@@ -575,12 +547,12 @@ dbdrivers = ["aiomysql", "asyncpg"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "ff0825922451c3ebd311666956adc8987677dc66fe5321565213cd3568ebd9ae"
+content-hash = "9adf7beba99d615c71a9148391386c9016cbafc7c11c5fc3ad81c8ec61026236"
 
 [metadata.files]
 aiomysql = [
-    {file = "aiomysql-0.0.20-py3-none-any.whl", hash = "sha256:5fd798481f16625b424eec765c56d712ac78a51f3bd0175a3de94107aae43307"},
+    {file = "aiomysql-0.0.21-py3-none-any.whl", hash = "sha256:a81a97da3dd732635926a8ea6adbbf2d1345799680bf61b5f89e730bcec88cc5"},
-    {file = "aiomysql-0.0.20.tar.gz", hash = "sha256:d89ce25d44dadb43cf2d9e4603bd67b7a0ad12d5e67208de013629ba648df2ba"},
+    {file = "aiomysql-0.0.21.tar.gz", hash = "sha256:811569c0db118dd2685f0878f5cebf17a11e89a995fa14261d5fa0254113842c"},
 ]
 aiosqlite = [
     {file = "aiosqlite-0.16.0-py3-none-any.whl", hash = "sha256:0e5b8465b0b6aa7f2b0a1fa7f3af53216fcea1947f524b658bd4b4696e72f1b7"},
@@ -630,48 +602,12 @@ attrs = [
     {file = "attrs-20.3.0.tar.gz", hash = "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"},
 ]
 bandit = [
-    {file = "bandit-1.6.2-py2.py3-none-any.whl", hash = "sha256:336620e220cf2d3115877685e264477ff9d9abaeb0afe3dc7264f55fa17a3952"},
+    {file = "bandit-1.7.0-py3-none-any.whl", hash = "sha256:216be4d044209fa06cf2a3e51b319769a51be8318140659719aa7a115c35ed07"},
-    {file = "bandit-1.6.2.tar.gz", hash = "sha256:41e75315853507aa145d62a78a2a6c5e3240fe14ee7c601459d0df9418196065"},
+    {file = "bandit-1.7.0.tar.gz", hash = "sha256:8a4c7415254d75df8ff3c3b15cfe9042ecee628a1e40b44c15a98890fbfc2608"},
 ]
 black = [
     {file = "black-20.8b1.tar.gz", hash = "sha256:1c02557aa099101b9d21496f8a914e9ed2222ef70336404eeeac8edba836fbea"},
 ]
-cffi = [
-    {file = "cffi-1.14.4-cp27-cp27m-macosx_10_9_x86_64.whl", hash = "sha256:ebb253464a5d0482b191274f1c8bf00e33f7e0b9c66405fbffc61ed2c839c775"},
-    {file = "cffi-1.14.4-cp27-cp27m-manylinux1_i686.whl", hash = "sha256:2c24d61263f511551f740d1a065eb0212db1dbbbbd241db758f5244281590c06"},
-    {file = "cffi-1.14.4-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:9f7a31251289b2ab6d4012f6e83e58bc3b96bd151f5b5262467f4bb6b34a7c26"},
-    {file = "cffi-1.14.4-cp27-cp27m-win32.whl", hash = "sha256:5cf4be6c304ad0b6602f5c4e90e2f59b47653ac1ed9c662ed379fe48a8f26b0c"},
-    {file = "cffi-1.14.4-cp27-cp27m-win_amd64.whl", hash = "sha256:f60567825f791c6f8a592f3c6e3bd93dd2934e3f9dac189308426bd76b00ef3b"},
-    {file = "cffi-1.14.4-cp27-cp27mu-manylinux1_i686.whl", hash = "sha256:c6332685306b6417a91b1ff9fae889b3ba65c2292d64bd9245c093b1b284809d"},
-    {file = "cffi-1.14.4-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:d9efd8b7a3ef378dd61a1e77367f1924375befc2eba06168b6ebfa903a5e59ca"},
-    {file = "cffi-1.14.4-cp35-cp35m-macosx_10_9_x86_64.whl", hash = "sha256:51a8b381b16ddd370178a65360ebe15fbc1c71cf6f584613a7ea08bfad946698"},
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 typing-extensions = [

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "aerich"
-version = "0.4.2"
+version = "0.4.4"
 description = "A database migrations tool for Tortoise ORM."
 authors = ["long2ice <long2ice@gmail.com>"]
 license = "Apache-2.0"
@@ -21,6 +21,7 @@ click = "*"
 pydantic = "*"
 aiomysql = {version = "*", optional = true}
 asyncpg = {version = "*", optional = true}
+ddlparse = "*"
 
 [tool.poetry.dev-dependencies]
 flake8 = "*"