OrangeMelons’ Post

Learning Path for Jobs: PERN Stack (PostgreSQL, Express, React, Node.js) The PERN stack is a powerful and popular stack for building full stack applications. Here’s an in-depth learning path to help you master the PERN stack and prepare for job opportunities: Step 1: Learn JavaScript and ES6+ Why? JavaScript is the foundation of the PERN stack. Modern JavaScript (ES6+) includes features that make your code more concise and readable. Topics to Cover: Variables (let, const) Arrow functions Template literals Destructuring Spread and rest operators Promises and async/await Step 2: Learn React Why? React is a powerful library for building user interfaces with a component-based architecture. Topics to Cover: Functional and class components JSX syntax Props and state Event handling Lifecycle methods (class components) and hooks (functional components) React Router for navigation State management with Context API or Redux Step 3: Learn Node.js and Express.js Why? Node.js allows you to run JavaScript on the server side. Express.js is a minimal and flexible Node.js web application framework. Topics to Cover: Setting up a Node.js project Modules and npm Building a basic server with Express Routing and middleware Handling requests and responses Building RESTful APIs Step 4: Learn PostgreSQL Why? PostgreSQL is a powerful, open-source relational database system. It’s widely used in the industry for its robustness and SQL capabilities. Topics to Cover: Installing PostgreSQL and setting up a database Basic SQL commands (SELECT, INSERT, UPDATE, DELETE) Joins, indexes, and constraints Using pgAdmin for database management Integrating PostgreSQL with Node.js using pg or Sequelize Step 5: Full Stack Development Why? Combining your knowledge of React, Node.js, Express, and PostgreSQL, you’ll build complete applications with both frontend and backend. Setting up a full stack project Connecting the React frontend to the Express backend Implementing CRUD operations State management with Redux Asynchronous actions and middleware (Thunk or Saga) Step 6: Authentication and Authorization Why? Secure authentication and authorization are critical for most applications. Topics to Cover: Implementing user registration and login Password hashing with bcrypt Session-based authentication with Passport.js Token-based authentication with JWT Role-based access control Step 7: Payment Integration Why? Adding payment capabilities is essential for e-commerce and many other applications. Setting up Stripe in your project Creating payment forms Handling payments on the server side Managing webhooks for real-time payment updates Step 8: Deployment Why? Deploying your application to the cloud ensures it’s accessible to users. Topics to Cover: Setting up a Git repository Deploying the backend to Heroku Deploying the frontend to Vercel Managing environment variables Setting up CI/CD pipelines

“Backend is so easy!” they say… 😅 Sure, it’s just a few basics, right? Like… 1)PHP Fundamentals: Just a simple language with a history that could fill a novel. Easy-peasy! 2)Syntax: Variables, data types, operators – a walk in the park… if that park had a few landmines. 3)Control Structures: Conditional statements and loops—who doesn’t love getting stuck in an infinite loop? 😂 4)Functions: Declarations, callbacks, and trying to remember where you left your semicolon. Fun times! 5)Arrays & Objects: Just trying to remember how to declare an associative array feels like a scavenger hunt. 6)Database Interaction: SQL and Eloquent ORM – it’s like asking a toddler to do your taxes! 7)Routing: Crafting routes in Laravel: like directing traffic but with fewer angry drivers. 8)MVC Architecture: Models, Views, and Controllers—like a family reunion where nobody gets along. 9)RESTful APIs: Creating APIs while praying they won’t break with the next deployment. 10)Authentication: Because who doesn’t love a good password reset email? 11)Error Handling: “Error 404: Fun Not Found” – if only that applied to bugs! 12)Configuration: Setting up .env files: is it just me, or do they have more secrets than a spy movie? 13)Testing: Unit tests and feature tests—like preparing for a date and hoping your code actually works! 14)Security: XSS, CSRF—sounds like a secret agent mission, right? 15)Performance Optimization: Making your app faster while praying it doesn’t explode! 16)Deployment: The adrenaline rush of hitting “Deploy” and wondering if today’s the day you break the internet. 17)Version Control: Git: because who doesn’t love a good merge conflict to spice up their day? 18)Task Scheduling: Setting up cron jobs—because the real world needs more automated tasks and less sleep! 19)Queues & Jobs: Background processing is great until you realize your job is still in the queue from last week! 20)Microservices: Splitting everything up into microservices, because who doesn’t want to manage 47 different apps? I mean, who doesn’t find all this easy? 😂 And this is just scratching the surface! Happy coding, fellow backenders! 💻🛠️ #BackendDevelopment #PHP #Laravel #WebDevelopment #JustKidding

So, you want to be a backend wizard, huh? 🧙♂️ Well, buckle up, because this journey is filled with code, coffee, and just a dash of frustration (but hey, we call that "learning"). Ready? Let’s go! 1. Pick Your Weapon (Programming Language) 🗡️: JavaScript (Node.js): If you love using the same language for both front and backend, JavaScript’s got you. It’s like the double espresso of coding. Python: Friendly and calm. Like the golden retriever of languages, always there for you with Django and Flask. Java: The granddaddy of backend. It’s serious, reliable, and never lets you down (kinda like your morning coffee). Go: Fast, lightweight, and efficient. If backend was a race, Go would be in a sports car. 2. Git Good With Version Control 🧠: Git & GitHub: Because every developer needs a way to mess up, rewind, and pretend nothing ever happened. 😂 Pro tip: Commit messages like “fixed stuff” don’t help. 3. Database: Where the Magic (Data) Lives 🏰: SQL: Structure, rules, relationships—just like a family reunion. Use MySQL or PostgreSQL to keep it all organized. NoSQL: Perfect for when your data refuses to be tamed. MongoDB and Redis are like the wild child you secretly love. 4. API Design 🍕: RESTful APIs: Think of REST like ordering pizza. Simple, clear, and everyone gets what they want. GraphQL: Custom orders? Sure! GraphQL lets you ask for exactly what you need (no extra toppings). 5. Authentication: Keep the Trolls Out! 🚪: Use OAuth, JWT, or Sessions to make sure only the cool kids (users) get in. Bonus points if you don’t lock yourself out in the process. 6. Servers & Hosting: Where Your Code Lives 🏡: AWS, Azure, Heroku—these are your code’s cozy homes. Sometimes you need a big house (cloud), other times a small apartment (shared hosting). But hey, every code needs a roof over its head. 7. Security: Protect Your Kingdom 🛡️: Defend your app with encryption, HTTPS, and more walls than a medieval castle. Beware of evil things like SQL injections (a.k.a. hackers trying to crash the party). 8. Testing & Debugging: The Quest for Zero Bugs 🔍: Unit tests, integration tests, and LOTS of console logs. Think of it as finding Waldo, except the bug is hiding somewhere in your 5000 lines of code. 🔎 9. Performance Optimization 🚄: Caching is like giving your app a turbo boost. Faster database queries and fewer user complaints. Win-win! 10. CI/CD & DevOps: Automate Everything 🤖: Jenkins, GitLab CI, and Docker—turning code deployments into smooth, automated magic. You'll be sipping coffee while the bots do the heavy lifting. 💪 #BackendWizards #CodeLife #APIs #Databases #GitGood #DeveloperMemes #NodeJS #Security #CI_CD

Django REST Framework (DRF) is a powerful toolkit for building Web APIs using Django. It's designed to make it easy to build APIs that are both flexible and easy to use. Here are some fundamental concepts and features of the Django REST Framework: ✅ Serialization: DRF provides a serialization framework that allows you to easily convert Django model instances into JSON, XML, or other content types. Serializers also handle deserialization, allowing you to convert request data into Django model instances. ✅ Views: DRF includes a set of class-based views that make it easy to create API endpoints for your resources. These views are similar to Django's class-based views but are tailored for building APIs. ✅ URL Routing: DRF provides a simple router that allows you to automatically map URLs to views based on a set of conventions. This makes it easy to define the URLs for your API endpoints. ✅ Authentication and Permissions: DRF includes built-in support for various authentication methods such as session authentication, token authentication, OAuth, etc. It also provides a flexible permissions system that allows you to control access to your API endpoints based on the user's authentication status and permissions. ✅ Viewsets and Routers: DRF introduces the concept of viewsets, which are classes that combine the logic for multiple related views into a single class. Viewsets make it easy to create CRUD (Create, Read, Update, Delete) endpoints for your resources. Routers are used to automatically wire up the URLs for these viewsets. ✅ Pagination: DRF includes built-in support for pagination, allowing you to easily paginate large collections of data returned by your API endpoints. ✅ Authentication Classes: DRF provides a variety of authentication classes that allow you to authenticate users using different methods such as Basic Authentication, Token Authentication, Session Authentication, etc. ✅ Permissions Classes: DRF includes several permission classes that allow you to control access to your API views based on various criteria such as IsAuthenticated, IsAdminUser, etc. ✅ Throttling: DRF includes throttling classes that allow you to limit the number of requests that can be made to your API views within a certain period of time. ✅ Customization and Extension: DRF is highly customizable and extensible. You can easily customize the behavior of various components such as serializers, views, authentication classes, permission classes, etc., to suit the specific requirements of your project. These are just some of the fundamental concepts and features of Django REST Framework. It's a comprehensive toolkit that provides everything you need to build robust and scalable APIs with Django. #django #djangorestframework #djangodeveloper #drf

🎉 New Update Alert: Django 5.0.4 Released! 🎉 Django enthusiasts, rejoice! 🚀 On April 3, 2024, the Django team announced the release of Django 5.0.4, marking another step forward in the framework's journey. This release focuses on ironing out several bugs found in the previous version, 5.0.3, ensuring a smoother experience for developers. Key Bug Fixes Include: Model Validation Enhancement: A crucial fix was applied to Model.full_clean(), addressing a crash when dealing with fields using expressions in db_default. Now, Model.full_clean() smartly bypasses validation for empty values in such fields, eliminating unforeseen crashes (#35223). Admin Interface Polish: An oversight in the AdminFileWidget, where the “Clear” checkbox mistakenly received two id attributes, has been corrected, streamlining the admin UI experience (#35273). PostgreSQL 15+ Compatibility: Django 5.0.4 resolves a migration hiccup encountered on PostgreSQL 15+ when implementing a partial UniqueConstraint with nulls_distinct, enhancing database management (#35329). Query Execution Stability: A fix for a crash during query operations involving table aliases and lookups on a GeneratedField of the aliased table has been implemented, ensuring reliable query execution (#35344). Migration Process Refinement: The release smooths out the migration process, particularly when adding a GeneratedField that depends on the __contains or __icontains lookups or utilizes a Value containing a "%", promoting seamless database schema evolution (#35336). Why This Matters: These updates underscore the Django team's commitment to providing a robust, secure, and efficient framework for developers worldwide. By addressing these specific bugs, Django 5.0.4 not only enhances the overall developer experience but also reinforces the framework's stability and compatibility across various database systems. Moving Forward: For Django developers, this update is a reminder of the importance of staying current with the latest releases for optimal performance and security. The community's effort to continually refine Django is a testament to its dedication to excellence. Get Updated: Don't miss out on the improvements! Upgrade to Django 5.0.4 and take advantage of these fixes for a more stable and efficient development experience. Let's keep building amazing web applications with Django! 🌐💻 #Django504 #WebDevelopment #BugFixes #DjangoRelease #PythonWebFramework #DeveloperCommunity

Hello Everyone, 🚀 Day 33-37 of Learning Full Stack Web Development 🚀 I’m excited to share my progress over the past few days! Here’s what I’ve been diving into: 1. Node with SQL:   - Explored how to integrate Node.js with SQL databases to build dynamic web applications. 🖥️ 2. MySQL2 Package:   - Learned to use the MySQL2 package to connect Node.js with MySQL, enabling efficient database operations. 📦 3. What is MongoDB?:   - Gained an understanding of MongoDB, a NoSQL database known for its flexibility and scalability. 🌐 4. mongosh:   - Got hands-on with mongosh, the MongoDB shell, to interact with the database directly. 💻 5. BSON Data:   - Studied BSON (Binary JSON), the data format used by MongoDB to store documents. 📄 6. Documents and Collection:   - Learned about the structure of MongoDB, focusing on documents and collections as the core components. 📚 7. CRUD Operations in MongoDB:   - Practiced Insert, Find, Update, and Delete operations to manage data effectively. 🔄 8.Query and Projection Operators:   - Delved into MongoDB’s query and projection operators to filter and retrieve specific data. 🔍 Feeling more confident each day as I continue to build my skills! 💪 Remember, learning is a journey, and each day brings new insights. Keep coding, stay curious, and share your progress! 🙌 🔹Let’s connect, learn, and build amazing things together! 🌟 #JavaScript #CodeWithMe #WebDevelopmentTips #TechSkills #ProgrammingJourney #Fullstackwebdevelopment #coding #html #css #javascript #FrontEndDevelopment #BackEndDevelopment #TechSkills #CareerGrowth #WebDevelopment #FullStack #Coding #FullStackDevelopment #NodeJS #WebDevelopment #LearningJourney #Tech #Coding #JavaScript #NPM #SoftwareDevelopment #DeveloperLife #TechLearning #NodeModules #FullStackDevelopment #WebDevelopment #ExpressJS #NodeJS #CodingJourney #LearningEveryday #TechSkills #DeveloperLife #Programming #JavaScript #EJS #WebDev #WebDevelopment #FullStack #JavaScript #EJS #OOP #LearningJourney #CodingLife #Tech #Programming #Developer #RESTAPI #CRUD #npm #FullStackDevelopment #WebDevelopment #SQL #Database #LearningJourney #TechSkills #CodingLife #Developer #MongoDB #CodingJourney #TechLearning #DeveloperLife #100DaysOfCode #LearningEveryday Keep coding, stay curious, and share your journey! 🌟💻 Let’s connect! 👉 https://lnkd.in/gBe25C4K

Hi everyone👋🏼! Sharing some of my favorite personal projects I've worked on as a developer over the years. 🎨Natours🎨 A fully functional RESTful API and server-side rendered webapp for booking tours, inspired by Jonas Schmedtmann's project. I rebuilt it, introducing modern features and resolving usability challenges. JavaScript | Node.js(Express) | MongoDB | Mongoose | CSS | Pug ⚙️Backend Features ⇝Full CRUD API for tours, bookings, reviews, and users ⇝Advanced endpoints: Top 5 Cheap Tours, Monthly Plan, Tour Stats, Tours Within Radius, and Distance Calculations ⇝JWT Authentication, OAuth 2.0 Authorization (Admin, Lead-Guide, Guide, User) ⇝Password hashing (bcrypt), reset token encryption (SHA-256), and data sanitization ⇝Rate limiting, secure HTTP headers (Helmet), regex attack prevention ⇝Geospatial queries and aggregation with robust data modeling ⇝Postman API documentation ⇝Mailing system (Nodemailer + Mailtrap) & image uploads (Multer) ⚙️Frontend Features ⇝Login/logout, password reset interface, error pages ⇝Responsive design: Tour cards, detailed pages (reviews, maps, bookings), user dashboard (profile, settings, bookings) 🛠️Updates ⇝2FA for login ⇝JWT blacklist ⇝Email confirmation on signup ⇝Persistent logins via refresh tokens ⇝Real-time availability checks for tours ⇝Integrated Flutterwave for payments, Brevo for mailing, Leaflet for maps 🔗Links ➼Code: https://lnkd.in/dhkWxCTz ➼Live Site: natours-6ybv.onrender.com 🎨Natours_Django🎨 I rebuilt Natours using Django Rest Framework (DRF) with enhanced DevOps features, offering robust security, seamless integration, and advanced containerization solutions. Python | Django RF | PostgreSQL + PostGIS | RDS | Docker | Gunicorn | Nginx | AWS (ECR & EC2) | CircleCI | HTML ⚙️Features/Updates ⇝All Natours features ⇝Social authentication ⇝API documentation(Swagger) ⇝CI/CD pipelines ⇝Containerization ⇝Reverse Proxy ⇝Task Queue ⇝DB and Container Cloud hosting ⇝Python scripts for JSON-to-DB automation, case conversions, and ID remapping 🔗Link ➼Code: https://lnkd.in/dcSqzhyC 🎨Library API🎨 A simple API for managing books with CRUD operations and image uploads to Cloudinary. TypeScript | Node.js (Express) | MongoDB | Mongoose | Cloudinary | Jest 🔗Link ➼Code: https://lnkd.in/dkxbEdVN 🎨Forkify🎨 A recipe webapp rebuilt from Jonas' Forkify project, enhanced with responsive design and advanced functionality. Vanilla JS | Sass/Scss | HTML ⚙️Features ⇝Search recipes via API, view details ⇝Adjust servings & bookmark recipes ⇝Upload recipes (auto-bookmarked), restricted recipe visibility ⇝Persist bookmarks via local storage 🛠️Updates ⇝Pagination with total pages, sorting by duration or ingredients ⇝Ingredient validation and multi-field input ⇝Shopping list and weekly meal planner with calendar view ⇝Nutrition data and calorie calculation via Nutritionix API 🔗Links ➼ Code: https://lnkd.in/dszTuTQT ➼ Live Site: https://lnkd.in/dj8cXWcP

Title: Building Scalable Web Applications with Django: A Full-Stack Developer’s Journey Introduction: As a full-stack developer, I’ve had the opportunity to work with various web technologies. However, Django has always stood out as my framework of choice for building robust and scalable backend solutions. In this article, I’ll share how I use Django to handle everything from user authentication to complex database relationships, and how it fits into a full-stack development workflow. 1. The Power of Django: Django’s “batteries-included” approach provides a lot of built-in features that streamline development, such as: Authentication: The built-in user authentication system makes login, registration, and user management easier. ORM (Object-Relational Mapping): Django’s ORM allows you to interact with the database using Python code, abstracting SQL queries and making database operations more intuitive. 2. Scalability and Performance: As a full-stack developer, I focus on making sure the backend is scalable and performs well under load. Django’s flexibility allows me to optimize database queries and use caching mechanisms like Redis to improve response times. Additionally, Django's middleware framework helps manage things like session handling and security. 3. Deployment and DevOps with Django: Once the application is built, deploying it to production is one of the final and critical steps. Using tools like Docker, Nginx, and Gunicorn, I deploy Django applications to cloud services like AWS, DigitalOcean, or Heroku. The deployment process is automated with CI/CD pipelines to ensure smooth and reliable releases. 4. Full-Stack Development Workflow: In my workflow, I focus on: Frontend: I work with HTML, CSS, and JavaScript (and sometimes frameworks like React or Vue.js) to build the user interface. Backend: Django handles the core business logic, data management, and API services. Version Control: I use Git and GitHub for version control and collaboration, ensuring that the codebase is maintainable and that team collaboration is efficient. Testing: I ensure my applications are well-tested using Django’s built-in testing framework, which provides unit and integration tests to verify the functionality of both the backend and frontend components. Conclusion: As a full-stack developer, Django provides me with the right tools and flexibility to create powerful web applications. Its integrated ecosystem—along with its rich feature set—makes it an excellent choice for any project, whether it’s a small prototype or a large-scale enterprise application. If you’re looking to build scalable and maintainable web applications, I highly recommend diving into Django. It allows you to focus on building features and solving problems, rather than worrying about infrastructure. Call to Action: Have you worked with Django in your full-stack projects? Share your experience in the comments, or feel free to connect with me for further discussions!

Middleware in Django : Enhancing Web Application Functionality In Django, middleware is a framework of hooks into Django’s request/response processing. It's a way to process requests globally before they reach the view, and responses globally before they reach the client. Think of middleware as a series of layers that your request and response pass through. Built-in Middleware Methods and Their Functions: __init__(self, get_response): This method is called once when the Django server starts. It initializes the middleware and sets up the get_response method that will be called to get the next middleware or view. __call__(self, request): This method is called on each request. It processes the request before it reaches the view and the response before it is sent to the client. process_view(self, request, view_func, view_args, view_kwargs) (optional): Called just before Django calls the view. It can modify the view arguments or return a response that bypasses the view. process_exception(self, request, exception) (optional): Called if the view raises an exception. It can return a response or re-raise the exception. process_template_response(self, request, response) (optional): Called just after the view has finished executing if it returns a TemplateResponse object. It can modify the response (e.g., adding context data) before it is rendered. Real-World Examples of Middleware: Security Middleware: Adds security-related headers to responses. Example: django.middleware.security.SecurityMiddleware ensures your site is only accessed over HTTPS. Session Middleware: Manages sessions across requests. Example: django.contrib.sessions.middleware.SessionMiddleware enables session support. Authentication Middleware: Associates users with requests using sessions. Example: django.contrib.auth.middleware.AuthenticationMiddleware checks if a user is authenticated. Common Middleware: Performs a series of common operations. Example: django.middleware.common.CommonMiddleware adds a trailing slash to URLs and handles HTTP 404 errors. Here’s a simple example of custom middleware in Django: class SimpleMiddleware: def __init__(self, get_response): self.get_response = get_response def __call__(self, request): # Code to be executed for each request before the view (and later middleware) are called. print("Before the view") response = self.get_response(request) # Code to be executed for each response after the view is called. print("After the view") return response To add this middleware to your Django project, include it in the MIDDLEWARE list in your settings: MIDDLEWARE = [ 'myapp.middleware.SimpleMiddleware', # ... other middleware classes ] #Django #WebDevelopment #Middleware #Python #Coding #TechInsights #WebAppDevelopment

🚀 Mastering Ruby on Rails: Unlock the Power of Query Batching 🚀 Hey friends! 🌟 Today, let's dive into an essential topic for all Ruby on Rails developers: Query Batching. This technique can drastically improve your application's performance by reducing the number of database queries. 💪 🔍 What is Query Batching? Query batching is a technique where multiple queries are grouped together and sent to the database in a single call. This minimizes the number of round trips between the application and the database, reducing latency and improving performance. 🧩 👉 How to Use It? In Rails, you can use methods like find_each, find_in_batches, and upsert_all to batch your queries. 🛠️ 🕒 When to Use It? Use query batching when you need to process large datasets or perform bulk inserts/updates. This is particularly useful for tasks like data migrations, background jobs, and batch processing. 🌟 🚫 When Not to Use It? Avoid using query batching for small datasets or when real-time processing is required, as batching can introduce slight delays. ⛔ ⚖️ 5. Pros & Cons Pros: 1️⃣ Reduces the number of database queries 2️⃣ Minimizes network latency 3️⃣ Improves performance for large datasets Cons: 1️⃣ Adds complexity to the code 2️⃣ Can introduce delays for real-time operations 💡Pro Tip 1️⃣ Explain: Always test your batched queries with realistic data volumes to ensure performance improvements. Use tools like EXPLAIN in SQL to understand how your queries are executed. 🚀 2️⃣ Indexing: Make sure the active column is indexed to improve the performance of the initial query. 🚀 3️⃣ Logging: You might want to add logging to monitor the progress of the batch update process. 🚀 4️⃣ Error Handling: Implement proper error handling to manage any potential issues during the update process. 🚀 📝 Suitable Code Real-Life Example Let's consider a scenario where you have a users table and you want to update the active status for a large number of users. By using find_in_batches, we update users in batches, significantly reducing the number of queries and improving performance. 🔧 How It Executes Behind the Scenes 1️⃣ Batch Processing: find_in_batches still handles the retrieval in batches of 1000. 2️⃣ Map IDs: users.map(&:id) collects the IDs of the users in the current batch. 3️⃣ Batch Update: update_all performs a single SQL UPDATE statement for all users in the current batch. Found this helpful? 👉 Hit Like 👍, Repost to Your Network 🔄, Save for Future Reference 💾, Share with Your Connections 📤, Comment Your Thoughts 💬 below! Happy coding! 💻✨