Как вы реализуете сериализатор для модели с полями Many-to-Many и динамическими свойствами в Django REST Framework?
Для реализации настраиваемой сериализации в Django REST Framework требуется:
1. Создание сериализатора для модели: Используйте serializers.ModelSerializer и определите сериализаторы для всех связанных моделей с Many-to-Many отношениями.
2. Динамические поля: Добавьте SerializerMethodField для обработки свойств, которые требуют динамического вычисления, и определите соответствующий метод.
class BookSerializer(serializers.ModelSerializer): authors = AuthorSerializer(many=True, read_only=True) custom_field = serializers.SerializerMethodField()
class Meta: model = Book fields = ('title', 'authors', 'custom_field')
Как вы реализуете сериализатор для модели с полями Many-to-Many и динамическими свойствами в Django REST Framework?
Для реализации настраиваемой сериализации в Django REST Framework требуется:
1. Создание сериализатора для модели: Используйте serializers.ModelSerializer и определите сериализаторы для всех связанных моделей с Many-to-Many отношениями.
2. Динамические поля: Добавьте SerializerMethodField для обработки свойств, которые требуют динамического вычисления, и определите соответствующий метод.
class BookSerializer(serializers.ModelSerializer): authors = AuthorSerializer(many=True, read_only=True) custom_field = serializers.SerializerMethodField()
class Meta: model = Book fields = ('title', 'authors', 'custom_field')
Bitcoin mining is the process of adding new transactions to the Bitcoin blockchain. It’s a tough job. People who choose to mine Bitcoin use a process called proof of work, deploying computers in a race to solve mathematical puzzles that verify transactions.To entice miners to keep racing to solve the puzzles and support the overall system, the Bitcoin code rewards miners with new Bitcoins. “This is how new coins are created” and new transactions are added to the blockchain, says Okoro.
How to Buy Bitcoin?
Most people buy Bitcoin via exchanges, such as Coinbase. Exchanges allow you to buy, sell and hold cryptocurrency, and setting up an account is similar to opening a brokerage account—you’ll need to verify your identity and provide some kind of funding source, such as a bank account or debit card. Major exchanges include Coinbase, Kraken, and Gemini. You can also buy Bitcoin at a broker like Robinhood. Regardless of where you buy your Bitcoin, you’ll need a digital wallet in which to store it. This might be what’s called a hot wallet or a cold wallet. A hot wallet (also called an online wallet) is stored by an exchange or a provider in the cloud. Providers of online wallets include Exodus, Electrum and Mycelium. A cold wallet (or mobile wallet) is an offline device used to store Bitcoin and is not connected to the Internet. Some mobile wallet options include Trezor and Ledger.
Библиотека собеса по Python | вопросы с собеседований from no
