REST API and Deploy

from flask import jsonify

@app.route('/api/posts', methods=['GET'])
def api_posts():
    posts = Post.query.filter_by(published=True).all()
    return jsonify([{'id': p.id, 'title': p.title, 'body': p.body} for p in posts])

@app.route('/api/posts/', methods=['GET'])
def api_post(id):
    post = Post.query.get_or_404(id)
    return jsonify({'id': post.id, 'title': post.title, 'body': post.body})

@app.route('/api/posts', methods=['POST'])
@login_required
def api_create_post():
    data = request.get_json()
    if not data or not data.get('title'):
        return jsonify({'error': 'title required'}), 400
    post = Post(title=data['title'], body=data.get('body',''), user_id=current_user.id)
    db.session.add(post)
    db.session.commit()
    return jsonify({'id': post.id}), 201

pip install flask-cors

from flask_cors import CORS
CORS(app, resources={r'/api/*': {'origins': 'https://yourfrontend.com'}})

# render.com → New Web Service → Connect GitHub
# Build command: pip install -r requirements.txt
# Start command: gunicorn app:app
# Add env vars: SECRET_KEY, DATABASE_URL

# requirements.txt
flask
flask-sqlalchemy
flask-migrate
gunicorn
psycopg2-binary
dj-database-url