A web application responds to a user’s request in many ways depending on many parameters. This blog explains you in detail about responses in Laravel web applications.

Basic Response

Laravel provides several different ways to return response. Response can be sent either from route or from controller. The basic response that can be sent is simple string as shown in the below sample code. This string will be automatically converted to appropriate HTTP response.

Example

Step 1 − Add the following code to app/Http/routes.php file.

app/Http/routes.php

Route::get('/basic_response', function () {   return 'Hello World';});

Step 2 − Visit the following URL to test the basic response.

http://localhost:8000/basic_response

Step 3 − The output will appear as shown in the following image.

la 19

Attaching Headers

The response can be attached to headers using the header() method. We can also attach the series of headers as shown in the below sample code.

return response($content,$status)   ->header('Content-Type', $type)   ->header('X-Header-One', 'Header Value')   ->header('X-Header-Two', 'Header Value');

Example

Observe the following example to understand more about Response −

Step 1 − Add the following code to app/Http/routes.php file.

app/Http/routes.php

Route::get('/header',function() {   return response("Hello", 200)->header('Content-Type', 'text/html');});

Step 2 − Visit the following URL to test the basic response.

http://localhost:8000/header

Step 3 − The output will appear as shown in the following image.

la 20

Attaching Cookies

The withcookie() helper method is used to attach cookies. The cookie generated with this method can be attached by calling withcookie() method with response instance. By default, all cookies generated by Laravel are encrypted and signed so that they can’t be modified or read by the client.

Example

Observe the following example to understand more about attaching cookies −

Step 1 − Add the following code to app/Http/routes.php file.

app/Http/routes.php

Route::get('/cookie',function() {   return response("Hello", 200)->header('Content-Type', 'text/html')      ->withcookie('name','Virat Gandhi');});

Step 2 − Visit the following URL to test the basic response.

http://localhost:8000/cookie

Step 3 − The output will appear as shown in the following image.

la 21

JSON Response

JSON response can be sent using the json method. This method will automatically set the Content-Type header to application/json. The json method will automatically convert the array into appropriate json response.

Example

Observe the following example to understand more about JSON Response −

Step 1 − Add the following line in app/Http/routes.php file.

app/Http/routes.php

Route::get('json',function() {   return response()->json(['name' => 'Virat Gandhi', 'state' => 'Gujarat']);});

Step 2 − Visit the following URL to test the json response.

http://localhost:8000/json

Step 3 − The output will appear as shown in the following image.

la 22

So, this brings us to the end of blog. This Tecklearn ‘Responses in Laravel web applications’ blog helps you with commonly asked questions if you are looking out for a job in Laravel Programming. If you wish to learn Laravel and build a career Java Programming domain, then check out our interactive, Java and JEE Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

https://www.tecklearn.com/course/java-and-jee-training/

Java and JEE Training

About the Course

Java and JEE Certification Training is designed by professionals as per the industrial requirements and demands. This training encompasses comprehensive knowledge on basic and advanced concepts of core Java & J2EE along with popular frameworks like Hibernate, Spring & SOA. In this course, you will gain expertise in concepts like Java Array, Java OOPs, Java Function, Java Loops, Java Collections, Java Thread, Java Servlet, and Web Services using industry use-cases and this will help you to become a certified Java expert.

Why Should you take Java and JEE Training?

Java developers are in great demand in the job market. With average pay going between $90,000/- to $120,000/- depending on your experience and the employers.
Used by more than 10 Million developers worldwide to develop applications for 15 Billion devices.
Java is one of the most popular programming languages in the software world. Rated #1 in TIOBE Popular programming languages index (15th Consecutive Year)

What you will Learn in this Course?

Introduction to Java

Java Fundamentals
Introduction to Java Basics
Features of Java
Various components of Java language
Benefits of Java over other programming languages
Key Benefits of Java

Installation and IDE’s for Java Programming Language

Installation of Java
Setting up of Eclipse IDE
Components of Java Program
Editors and IDEs used for Java Programming
Writing a Simple Java Program

Data Handling and Functions

Data types, Operations, Compilation process, Class files, Loops, Conditions
Using Loop Constructs
Arrays- Single Dimensional and Multi-Dimensional
Functions
Functions with Arguments

OOPS in Java: Concept of Object Orientation

Object Oriented Programming in Java
Implement classes and objects in Java
Create Class Constructors
Overload Constructors
Inheritance
Inherit Classes and create sub-classes
Implement abstract classes and methods
Use static keyword
Implement Interfaces and use it

Polymorphism, Packages and String Handling

Concept of Static and Run time Polymorphism
Function Overloading
String Handling –String Class
Java Packages

Exception Handling and Multi-Threading

Exception handling
Various Types of Exception Handling
Introduction to multi-threading in Java
Extending the thread class
Synchronizing the thread

File Handling in Java

Input Output Streams
io Package
File Handling in Java

Java Collections

Wrapper Classes and Inner Classes: Integer, Character, Boolean, Float etc
Applet Programs: How to write UI programs with Applet, Java.lang, Java.io, Java.util
Collections: ArrayList, Vector, HashSet, TreeSet, HashMap, HashTable

Java Database Connectivity (JDBC)

Introduction to SQL: Connect, Insert, Update, Delete, Select
Introduction to JDBC and Architecture of JDBC
Insert/Update/Delete/Select Operations using JDBC
Batch Processing Transaction
Management: Commit and Rollback

Java Enterprise Edition – Servlets

Introduction to J2EE
Client Server architecture
URL, Port Number, Request, Response
Need for servlets
Servlet fundamentals
Setting up a web project in Eclipse
Configuring and running the web app with servlets
GET and POST request in web application with demo
Servlet lifecycle
Servlets Continued
Session tracking and filter
Forward and include Servlet request dispatchers

Java Server Pages (JSP)

Fundamentals of Java Server Page
Writing a code using JSP
The architecture of JSP
JSP Continued
JSP elements: Scriptlets, expressions, declaration
JSP standard actions
JSP directives
Introduction to JavaBeans
ServletConfig and ServletContext
Servlet Chaining
Cookies Management
Session Management

Hibernate

Introduction to Hibernate
Introduction to ORM
ORM features
Hibernate as an ORM framework
Hibernate features
Setting up a project with Hibernate framework
Basic APIs needed to do CRUD operations with Hibernate
Hibernate Architecture

POJO (Plain Old Java Object)

POJO (Plain Old Java Object)
Persistent Objects
Lifecycle of Persistent Object

Spring

Introduction to Spring
Spring Fundamentals
Advanced Spring

Got a question for us? Please mention it in the comments section and we will get back to you.

378