Initial framework.

.gitignore

@@ -10,3 +10,4 @@ inventory/static/uploads/*
 alembic.ini
 alembic/
 *.egg-info/
+test-app/

crudkit/api/flask_api.py

@@ -0,0 +1,29 @@
+from flask import Blueprint, jsonify, request
+
+def generate_crud_blueprint(model, service):
+    bp = Blueprint(model.__name__.lower(), __name__)
+
+    @bp.get('/')
+    def list_items():
+        items = service.list()
+        return jsonify([item.as_dict() for item in items])
+
+    @bp.get('/<int:id>')
+    def get_item(id):
+        item = service.get(id)
+        return jsonify(item.as_dict())
+
+    @bp.post('/')
+    def create_item():
+        obj = service.create(request.json)
+        return jsonify(obj.as_dict())
+
+    @bp.patch('/<int:id>')
+    def update_item(id):
+        obj = service.update(id, request.json)
+        return jsonify(obj.as_dict())
+
+    @bp.delete('/<int:id>')
+    def delete_item(id):
+        service.delete(id)
+        return '', 204

crudkit/core/base.py

@@ -0,0 +1,11 @@
+from sqlalchemy import Column, Integer, DateTime, func
+from sqlalchemy.orm import declarative_mixin
+
+@declarative_mixin
+class CRUDMixin:
+    id = Column(Integer, primary_key=True)
+    created_at = Column(DateTime, default=func.now())
+    updated_at = Column(DateTime, default=func.now(), onupdate=func.now())
+
+    def as_dict(self):
+        return {c.name: getattr(self, c.name) for c in self.__table__.columns}

crudkit/core/service.py

@@ -0,0 +1,33 @@
+from typing import Type, TypeVar, Generic
+from sqlalchemy.orm import Session
+
+T = TypeVar("T")
+
+class CRUDService(Generic[T]):
+    def __init__(self, model: Type[T], session: Session):
+        self.model = model
+        self.session = session
+
+    def get(self, id: int) -> T:
+        return self.session.get(self.model, id)
+
+    def list(self, limit=100, offset=0) -> list[T]:
+        return self.session.query(self.model).offset(offset).limit(limit).all()
+
+    def create(self, data: dict) -> T:
+        obj = self.model(**data)
+        self.session.add(obj)
+        self.session.commit()
+        return obj
+
+    def update(self, id: int, data: dict) -> T:
+        obj = self.get(id)
+        for k, v in data.items():
+            setattr(obj, k, v)
+        self.session.commit()
+        return obj
+
+    def delete(self, id: int):
+        obj = self.get(id)
+        self.session.delete(obj)
+        self.session.commit()

crudkit/ui/fragments.py

@@ -0,0 +1,13 @@
+from jinja2 import Environment, FileSystemLoader
+import os
+
+FRAGMENT_PATH = os.path.join(os.path.dirname(__file__), 'templates')
+env = Environment(loader=FileSystemLoader(FRAGMENT_PATH))
+
+def render_field(field_name, value):
+    template = env.get_template('field.html')
+    return template.render(field_name=field_name, value=value)
+
+def render_table(objects):
+    template = env.get_template('table.html')
+    return template.render(objects=objects)

crudkit/ui/templates/field.html

@@ -0,0 +1,2 @@
+<label>{{ field_name }}</label>
+<input type="text" name="{{ field_name }}" value="{{ value }}">

crudkit/ui/templates/table.html

@@ -0,0 +1,8 @@
+<table>
+    <tr>
+        {% for field in objects[0].__table__.columns %}<th>{{ field.name }}</th>{% endfor %}
+    </tr>
+    {% for obj in objects %}
+        <tr>{% for field in obj.__table__columns %}<td>{{ getattr(obj, field.name) }}</td>{% endfor %}</tr>
+    {% endfor %}
+</table>