Understanding Layouts in Views
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Lecture 415:- Understanding Layouts in Views
Layouts in views are a concept used in web development to create a consistent structure and design across multiple pages of a website or web application. A layout acts as a wrapper or container for individual pages and includes common elements such as header, footer, navigation menu, and other shared components.
The primary goal of using layouts is to keep the code DRY (Don't Repeat Yourself) and maintain a consistent user experience throughout the website. Instead of duplicating the code for common sections across multiple pages, you define these sections in a layout and inject the specific content for each page dynamically.
Let's explore how layouts work in different web development frameworks:
1. Using Layouts in Backend Frameworks: In backend frameworks like Node.js (Express), Ruby on Rails, Django, or Laravel, layouts are usually implemented through the view templating system. Most backend frameworks support some form of templating, such as EJS, Handlebars, Pug (formerly Jade), or Blade.
Here's an example of using layouts in Express (Node.js) with EJS templating engine:
Suppose you have a layout.ejs file that defines the common structure:
htmlCopy code
<!-- layout.ejs -->
<!DOCTYPE html>
<html>
<head>
<title><%= pageTitle %></title>
</head>
<body>
<header>
<!-- Include your header content here -->
</header>
<main>
<!-- Page-specific content will be inserted here -->
<%= body %>
</main>
<footer>
<!-- Include your footer content here -->
</footer>
</body>
</html>
In your individual views (e.g., index.ejs, about.ejs, etc.), you extend the layout and define the specific content:
htmlCopy code
<!-- index.ejs -->
<%- include('layout.ejs', { pageTitle: 'Home', body: content }) %>
htmlCopy code
<!-- about.ejs -->
<%- include('layout.ejs', { pageTitle: 'About Us', body: content }) %>
In this example, <%- include('layout.ejs', { pageTitle: 'Home', body: content }) %> and <%- include('layout.ejs', { pageTitle: 'About Us', body: content }) %> inject the specific content for each page into the layout.
2. Using Layouts in Frontend Frameworks: Frontend frameworks like React, Vue.js, and Angular also support the concept of layouts. In these frameworks, layouts are typically implemented through higher-order components (HOCs) or layout components.
For example, in React, you can create a Layout component that wraps the individual pages:
jsxCopy code
// Layout.jsx
import React from 'react';
const Layout = ({ children }) => {
return (
<div>
<header>
{/* Include your header content here */}
</header>
<main>
{/* Page-specific content will be inserted here */}
{children}
</main>
<footer>
{/* Include your footer content here */}
</footer>
</div>
);
};
export default Layout;
In your individual pages (components), you wrap them with the Layout component:
jsxCopy code
// Home.jsx
import React from 'react';
import Layout from './Layout';
const Home = () => {
return (
<Layout>
{/* Home page specific content */}
</Layout>
);
};
export default Home;
jsxCopy code
// About.jsx
import React from 'react';
import Layout from './Layout';
const About = () => {
return (
<Layout>
{/* About page specific content */}
</Layout>
);
};
export default About;
In this example, the Layout component acts as a wrapper around the Home and About components, providing the common structure and design.
Regardless of the framework you're using, layouts (or similar concepts) help you achieve consistency, improve code organization, and create a more maintainable and scalable web application. They play a crucial role in building a cohesive user experience for your website or web application.
- 1. Intro To Html
- 2. Creating First HTML Page
- 3. HTML Page Structure
- 4. What We Plan to Build
- 5. Title Tag
- 6. Basic HTML Tags
- 7. Unordered Lists
- 8. Ordered Lists
- 9. Adding Lists to Blog page
- 10. Adding Image to Blog Page
- 11. Adding Header To Blog Page
- 12. Learning Anchor Tag Part 1
- 13. Learning Anchor Tag Part 2
- 1. What are Frontend Frameworks
- 2. Getting Started with Bootstrap
- 3. Adding Bootstrap to your Project
- 4. Bootstrap Breakpoints
- 5. Bootstrap Grid System
- 6. Code Using Bootstrap Grid System
- 7. Margin and Display Utilities
- 8. Other Utility Classes
- 9. Bootstrap Components
- 10. Modals
- 11. Collapse Component
- 12. Nav
- 13. Navbar
- 14. Jumbotron Template
- 1. What is Git
- 2. Git Commits
- 3. Git Commits Part 2
- 4. Git Understanding Branches
- 5. Git Making Branches
- 6. Git Merging Branches
- 7. Git Conflicts in Branches
- 8. Git Understanding Workflows
- 9. Pushing to github.com
- 10. Github With a Team Member
- 11. Git - Multiple Teams - Forking
- 12. Completing with PR Open Source Contribution
- 13. Pull Requests and Workflows of Large Teams
- 1. Const
- 2. Let
- 3. Let vs Var
- 4. For of loop
- 5. Smooth Scroll Demo
- 6. Smooth Scroll Hint 1
- 7. Smooth Scroll Hint 2
- 8. Smooth Scroll Solution
- 9. Another Approach to Write Code
- 10. Skill Bar Demo
- 11. Moving Ahead with Skill Bar Auto Fill
- 12. Competing Skill Bar Auto Fill
- 13. Counter Demo
- 14. Counter Hint
- 1. Intro to Lecture
- 2. This Keyword
- 3. This in Strict Mode
- 4. Function to create Objects
- 5. Constructor
- 6. Adding Behaviour to Objects
- 7. What is a Prototype
- 8. Why Prototypes
- 9. More Properties around Prototype
- 10. Objects
- 11. object vs Object()
- 12. Class
- 13. Class Expressions and Hoisting
- 14. Inheritance Using Classes
- 1. Server - What & How
- 2. Setting Up Our First Node.js Server
- 3. Serving a Response to the Browser
- 4. Understanding Responses
- 5. Serving HTML!
- 6. Reading and Serving HTML From a File
- 7. Nodemon, Automatic Server Restarts
- 8. Extending to Multiple Pages
- 9. Linking Pages & Mini Assignment
- 10. Summarizing!
- 1. Web Frameworks - A Quick Introduction
- 2. Understanding MVC Models, Views, Controllers
- 3. Why Express.js
- 4. Setting Up Express Server
- 5. Returning Response From The Server
- 6. HTTP Requests
- 7. Template Engines - What
- 8. Template Engines - Some Examples
- 9. Setting Up A Template Engine
- 10. A Quick Revision
- 11. Debugging Basics
- 12. Rendering Our First Page
- 13. Playing With EJS
- 14. Locals In Views
- 15. Summarizing
- 1. Introduction
- 2. Creating A Contact List
- 3. Sending Data To The Server
- 4. Parsing Form Data - Introduction
- 5. Parsing Form Data - Storing The Contact
- 6. Middleware - What and How
- 7. Accessing Static Files
- 8. Styling Our App
- 9. A Quick Revision
- 10. Query & String Parameters - Beginning
- 11. Query & String Parameters - Details
- 12. Deleting A Contact
- 13. Summarizing
- 1. Introduction
- 2. Setting Up Directory Structure
- 3. Starting Express
- 4. Adding Git and NPM Start
- 5. Setup the Express Router
- 6. Create a Controller
- 7. Create Another Controller and Router
- 8. Assignment adding more routes and controllers
- 9. Install EJS and Setup View Engine
- 10. Create a view for home
- 11. Summary
- 1. Introduction
- 2. Glancing through and Installing Passportjs
- 3. Setting up Passport.js
- 4. Express sessions and using passport for Authentication
- 5. Setting current authenticated user
- 6. Passing User data to views and restricting page access
- 7. Setting up Mongo store for session cookies
- 8. Creating Sign out
- 9. Summarizing
- 1. Introduction
- 2. Node.js - Explaining 1-1 and 1-M
- 3. Creating Schema for Posts
- 4. Saving Posts to the DB
- 5. Display Posts and related User
- 6. Check Authentication on Creating Post
- 7. Creating Schema for Comments
- 8. Adding Comments to the DB
- 9. Nested Population - Display Comment and Related User
- 10. Learning storage in SQL databases
- 11. Summarizing
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