feature: 配置文件&配置插件

pear_admin/__init__.py

@@ -0,0 +1,18 @@
+from flask import Flask
+
+from configs import config
+from pear_admin.extensions import register_extensions
+
+
+def create_app(config_name="dev"):
+    app = Flask("pear-admin-flask")
+
+    app.config.from_object(config[config_name])
+
+    register_extensions(app)
+
+    @app.route("/")
+    def index():
+        return "hello pear-admin-flask !"
+
+    return app

pear_admin/extensions/__init__.py

@@ -0,0 +1,8 @@
+from flask import Flask
+
+from .init_db import db, migrate
+
+
+def register_extensions(app: Flask):
+    db.init_app(app)
+    migrate.init_app(app, db)

pear_admin/extensions/init_db.py

@@ -0,0 +1,5 @@
+from flask_migrate import Migrate
+from flask_sqlalchemy import SQLAlchemy
+
+db = SQLAlchemy()
+migrate = Migrate()