AI Powered SaaS: Stripe + Auth + Billing + Deploy · 课时

创建产品与价格

学习在 Stripe 控制面板中以及通过 API 定义和管理产品及其关联的定价模式。

创建产品与价格 是 CoddyKit 上的免费 AI Powered SaaS: Stripe + Auth + Billing + Deploy 课时。这是第 2 节课，共 4 节。你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。这是 AI Powered SaaS: Stripe + Auth + Billing + Deploy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 AI Powered SaaS: Stripe + Auth + Billing + Deploy 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

What are Stripe Products?

In Stripe, a Product represents what you sell. This could be a physical good, a service, or, in our case, a feature or access level for your SaaS application.

A Price defines how much a product costs, in what currency, and whether it's a one-time payment or recurring subscription. Together, they form the foundation for processing payments.

Creating Products via Dashboard

For simple setups, you can define products directly in the Stripe Dashboard. This is great for getting started quickly and understanding the concepts.

Navigate to Products in your Stripe Dashboard.
Click + Add product.
Enter a Name (e.g., "Premium AI Access") and optionally a Description and Image.

Attaching Prices via Dashboard

Once a product is created, you need to add a price to it. A product can have multiple prices.

On the product details page, scroll down to the Pricing section.
Click + Add another price.
Specify the Amount, Currency (e.g., USD), and set Billing period to "One-time" for this lesson.

Automating with the Stripe API

While the dashboard is useful, a real SaaS application needs to create and manage products and prices programmatically. This allows for:

Automation: Create products on the fly.
Dynamic Pricing: Adjust prices based on user segments or promotions.
Integration: Link directly with your application's backend logic.

API Setup: Keys & Client

To interact with Stripe's API, you need your secret API key and the official Stripe client library. We'll use Python for our examples.

Ensure you have your STRIPE_SECRET_KEY from the Stripe Dashboard (Developers > API keys).

import stripe
import os

# In a real app, use environment variables!
# For this demo, replace 'sk_test_YOUR_KEY' with your actual secret key
stripe.api_key = os.getenv("STRIPE_SECRET_KEY", "sk_test_YOUR_KEY")

def main():
    if stripe.api_key == "sk_test_YOUR_KEY":
        print("Stripe API key is a placeholder. Update it!")
    else:
        print("Stripe API client initialized!")

if __name__ == "__main__":
    main()

API: Create Your First Product

Now, let's create a product using the Stripe API. We'll specify its name, description, and set it as active.

Run this code to see a new product appear in your Stripe Dashboard!

import stripe
import os

stripe.api_key = os.getenv("STRIPE_SECRET_KEY", "sk_test_YOUR_KEY")

def create_product(name, description):
    try:
        product = stripe.Product.create(
            name=name,
            description=description,
            active=True
        )
        print(f"Product created! ID: {product.id}")
        print(f"Name: {product.name}")
        return product
    except stripe.error.StripeError as e:
        print(f"Error creating product: {e}")
        return None

def main():
    print("Attempting to create a sample product...")
    my_product = create_product(
        "Pro AI Feature Pack",
        "Unlock advanced AI capabilities for your users." 
    )
    if my_product:
        print("Product creation successful!")
    else:
        print("Product creation failed.")

if __name__ == "__main__":
    main()

API: Attach a Price to Product

After creating a product, we need to define a price for it. For one-time payments, we specify the unit_amount in cents and set recurring=None.

The price must be linked to an existing product using its ID.

import stripe
import os

stripe.api_key = os.getenv("STRIPE_SECRET_KEY", "sk_test_YOUR_KEY")

# Helper to create product and get its ID
def create_product_for_price(name, description):
    try:
        product = stripe.Product.create(
            name=name,
            description=description,
            active=True
        )
        return product.id
    except stripe.error.StripeError as e:
        print(f"Error creating product for price: {e}")
        return None

def create_one_time_price(product_id, amount_in_cents, currency="usd"):
    try:
        price = stripe.Price.create(
            product=product_id,
            unit_amount=amount_in_cents, 
            currency=currency,
            recurring=None, # This specifies a one-time payment
        )
        print(f"Price created! ID: {price.id}")
        print(f"Amount: {price.unit_amount / 100} {price.currency.upper()}")
        return price
    except stripe.error.StripeError as e:
        print(f"Error creating price: {e}")
        return None

def main():
    product_id = create_product_for_price(
        "Ultimate AI Access",
        "Access to all AI features, forever."
    )
    if product_id:
        print(f"Product ID for price: {product_id}")
        print("Creating a one-time price for the product...")
        my_price = create_one_time_price(product_id, 4999) # $49.99
        if my_price:
            print("Price creation successful!")
        else:
            print("Price creation failed.")

if __name__ == "__main__":
    main()

Key Price Parameters

When creating a price via API, these parameters are crucial:

product: The ID of the product this price belongs to.
unit_amount: The price amount in the smallest currency unit (e.g., cents for USD).
currency: The three-letter ISO currency code (e.g., 'usd', 'eur').
recurring: Set to None for one-time payments. For subscriptions, this would be an object with details like interval.
lookup_key (optional): A custom string you can use to retrieve prices without knowing their Stripe ID.

Retrieving & Updating

You can retrieve products and prices by their IDs using stripe.Product.retrieve(product_id) and stripe.Price.retrieve(price_id).

Important: Stripe Prices are immutable. Once created, you cannot change their amount or currency. If you need to change a price, you must create a new one and deactivate the old one.

Products, however, can be updated (e.g., their name or description).

Product & Price Check

Let's check your understanding of creating products and prices in Stripe.

Recap: Products & Prices

Great job! You've learned how to define and manage products and their associated one-time prices in Stripe.

Products represent what you sell.
Prices define how much something costs.
You can manage them via the Stripe Dashboard or programmatically via the API.
Key API parameters include product ID, unit_amount (in cents), currency, and setting recurring=None for one-time charges.
Remember that Stripe Prices are immutable!

Next, we'll use these products and prices to implement Stripe Checkout sessions.

常见问题解答

「创建产品与价格」课时是免费的吗？

是的 — 「创建产品与价格」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 AI Powered SaaS: Stripe + Auth + Billing + Deploy 课程的其余内容，请升级到 CoddyKit PRO。 AI Powered SaaS: Stripe + Auth + Billing + Deploy 课程共包含 4 节课。

「创建产品与价格」这节课中我会学到什么？

学习在 Stripe 控制面板中以及通过 API 定义和管理产品及其关联的定价模式。你通过在浏览器中直接运行的动手代码来练习 AI Powered SaaS: Stripe + Auth + Billing + Deploy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 AI Powered SaaS: Stripe + Auth + Billing + Deploy 需要有经验吗？

无需任何先前经验。CoddyKit 上的 AI Powered SaaS: Stripe + Auth + Billing + Deploy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。这是第 2 节课，共 4 节。

「创建产品与价格」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 AI Powered SaaS: Stripe + Auth + Billing + Deploy 课中编写并运行代码吗？

能。每节 AI Powered SaaS: Stripe + Auth + Billing + Deploy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

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