NestJs in Practice (with MongoDB)

🚀 NestJs in Practice (with MongoDB) - Your Journey to Mastering Modern Backend Development! 🌟

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This Course in a Nutshell ⚙️

"It's like Angular but for the backend." If you're familiar with Angular, you'll find NestJs incredibly intuitive. It leverages the same object-oriented principles and API design patterns to help you build a robust backend. NestJs is also architected to be highly modular and scalable, similar to other popular backend frameworks like Spring or ASP.NET MVC.

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Course Overview 📚

Dive into the world of backend development with NestJs, where you'll learn to design and develop a REST API from scratch. This course will guide you through querying a MongoDB database using Mongoose ODM, ensuring you understand everything from basic principles to advanced concepts. We start from zero prior knowledge assumed, making this perfect for beginners!

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What You'll Learn 🎓

• Introduction to NestJs: Understand the core features and architecture of NestJs.
• Running NestJs in Hot Reload and Debug mode: Streamline your development process with real-time feedback.
• Writing our first NestJs REST endpoint: Get hands-on experience with building an API endpoint.
• NestJs Modules, Controllers, and injectable Services: Learn the building blocks of a NestJs application.
• Introduction to MongoDB: Discover the basics of MongoDB and its document-oriented approach.
• Setting up a cloud MongoDB database: Connect your NestJs app with a hosted MongoDB instance.
• Querying MongoDB from a NestJs REST endpoint: Perform CRUD operations seamlessly.
• Complete CRUD example with NestJs and MongoDB: Master the most common data operations in a real-world scenario.
• NestJs Filters and custom error handling: Learn to handle errors gracefully and filter incoming requests.
• NestJs Pipes, building a custom pipe: Enhance request processing with pipes.
• Data Validation with class-validator and the Validation pipe: Ensure your data adheres to business rules.
• NestJs Middleware: Extend the functionality of your application with middleware.
• User Authentication with NestJs: Implement secure user authentication mechanisms.
• NestJs RBAC (Role-Based Access Control) Authorization: Manage user permissions and access control.
• NestJs Guards: Control user access to various parts of your application.

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Table of Contents 📖

This course is structured to cover all the essential topics in a logical order, ensuring you build your knowledge step by step. Here's what we'll explore:

1. Introduction to NestJs
2. Running NestJs in Hot Reload and Debug mode
3. Writing our first NestJs REST endpoint
4. NestJs Modules, Controllers, and injectable Services
5. Introduction to MongoDB
6. Setting up a cloud MongoDB database
7. Introduction to the Mongoose ODM library
8. Querying MongoDB from a NestJs REST endpoint
9. Complete CRUD example with NestJs and MongoDB
10. NestJs Filters and custom error handling
11. NestJs Pipes, building a custom pipe
12. Data Validation with class-validator and the Validation pipe
13. NestJs Middleware
14. User Authentication with NestJs
15. NestJs RBAC (Role-Based Access Control) Authorization
16. NestJs Guards

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What Will You Learn In this Course? 📈

By the end of this course, you will have a solid understanding of designing and developing production-ready secure backends using NestJs. You'll be confident in implementing real-world scenarios with MongoDB, and you'll have a deep dive into the core concepts that make NestJs a powerful choice for backend development. Get ready to join the ranks of developers who can seamlessly build scalable, efficient, and secure backends! 🚀💡

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Enroll now and embark on your journey to becoming an expert in modern backend development with NestJs in Practice (with MongoDB). Let's build something amazing together! 🎉

1. CoursesRepository and Dependency Injection Issue:

   The issue with CoursesRepository being undefined after dependency injection is likely due to a typo or incorrect setup in your code. Ensure that CoursesRepository is correctly defined, imported, and provided (registered) in your NestJS application. Here are some steps to troubleshoot:

   • Verify that CoursesRepository is properly typed as a Repository of Course.
   • Make sure that the custom provider for CoursesRepository is registered in your app module or a dedicated provider module.
   • Check if the @Module decorator where you use courseModel: Model<Course> also imports the module where CoursesRepository is provided.

2. Monorepo Concerns:

   The concern about using code from a monorepo can be addressed by clearly separating the concerns and ensuring that the dependencies used in the course are consistent and up-to-date. It's important to note that a monorepo approach is common in larger projects and organizations, and with proper management, it can avoid conflicts and version mismatches.

3. Course Content and Updates:

   The feedback regarding the course being outdated or containing legacy practices is valuable. It's essential for educational content to be up-to-date with the latest versions of frameworks and libraries. If you encounter such issues, it might be helpful to:

   • Check the course repository for any updates or announcements from the instructors regarding deprecated features or necessary updates.
   • Consider reaching out to the course support or community for guidance on resolving compatibility issues with newer versions.

4. Practice and Learning:

   The suggestion to learn by repeating things from scratch is a valid approach. Building projects incrementally using modern, up-to-date code can deepen your understanding of the framework and best practices.

5. Course Improvements:

   The feedback about missing explanations on using the NestJS CLI and strong typing issues is constructive. It's important for courses to include the latest tools and best practices, including proper type definitions for TypeScript projects.

6. General Feedback:

   • The course appears to be comprehensive and well-taught, as per several positive reviews.
   • There are concerns about the maintenance of the course material and dependency management that need to be addressed by the course maintainers.
   • Some users have had positive experiences with previous courses from Angular University and recommend them, despite some issues with this particular course.

To address the issues with the course, you may want to:

• Clone the repository again to ensure you have the latest codebase.
• Update all dependencies manually to the latest versions compatible with the course objectives.
• Ensure that your TypeScript configurations are set up for strong typing and that interfaces are properly defined for models and repositories.
• If the course material seems outdated, check for any official updates or announcements from the course authors regarding newer versions of the content.

Remember that learning a framework like NestJS involves understanding both the theoretical aspects and hands-on coding practices. It's also important to stay updated with the latest developments in the ecosystem to ensure that your skills remain relevant.