Book Image

Python API Development Fundamentals

By : Jack Chan, Ray Chung, Jack Huang
Book Image

Python API Development Fundamentals

By: Jack Chan, Ray Chung, Jack Huang

Overview of this book

Python is a flexible language that can be used for much more than just script development. By knowing the Python RESTful APIs work, you can build a powerful backend for web applications and mobile applications using Python. You'll take your first steps by building a simple API and learning how the frontend web interface can communicate with the backend. You'll also learn how to serialize and deserialize objects using the marshmallow library. Then, you'll learn how to authenticate and authorize users using Flask-JWT. You'll also learn how to enhance your APIs by adding useful features, such as email, image upload, searching, and pagination. You'll wrap up the whole book by deploying your APIs to the cloud. By the end of this book, you'll have the confidence and skill to leverage the power of RESTful APIs and Python to build efficient web applications.
Table of Contents (12 chapters)

7: Working with Images

Activity 11: Implementing the Recipe Cover Image Upload Function


  1. Add the cover_image attribute to the User model in models/
    cover_image = db.Column(db.String(100), default=None)

    The cover_image attribute will contain the image filename as a string, with a maximum length of 100 characters.

  2. Use the flask db migrate command to generate a database table update script:
    flask db migrate

    You will see that a new column, 'recipe.cover_image', has been detected:

    INFO  [alembic.runtime.migration] Context impl PostgresqlImpl.
    INFO  [alembic.runtime.migration] Will assume transactional DDL.
    INFO  [] Detected added column 'recipe.cover_image'
      Generating /TrainingByPackt/Python-API-Development-Fundamentals/Lesson07/smilecook/migrations/versions/ ... done
  3. Check the script at /migrations/versions/
    """empty message...