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Become an AdonisJS Developer

This module is a detailed guide to AdonisJs. AdonisJs, inspired by Laravel, is a Node.js framework that allows developers to build full-stack web applications and micro-API servers.

In this module, you will cover the fundamentals: routes, controllers, middleware, hooks, and more. Each chapter contains code examples and illustrations to enhance your learning, and you will also be able to quiz yourself on the materials covered.

By the time you are done with the module, you'll have plenty of hands-on practice, and will be able to confidently write your full-stack applications in AdonisJs.

Designing Applications with AdonisJS

We can create routes to URLs in **start/route.js**. For each URL request, AdonisJs creates a request object with the global middleware. The global middleware that does all of this is called **BodyParser** and is installed by default and registered in **start/kernel.js**. When a user submits a form, each input field, the HTTP method, the user's IP address, etc. can be read using this request object.

## Request methods

The following are some useful request methods:

| **Method**   | **Description**  | 
|----------|:-----------|
| `request.all()`  | Returns an object that contains all request data (including query params and request body data).|
| `request.get()` | Returns an object that contains query params data.|
| `request.post()`  | Returns an object containing request body data from the submitted form.|
| `request.input(key)`  | Returns the value of the specified key.|
| `request.only([key1, key2])`   |Returns an object with only the specified keys.|
| `request.except([key])` |Returns an object with everything except the specified key(s).|
| `request.header()` |Returns an object containing all header data.|
|  `request.url()`  |Returns the current request URL.|
| `request.originalUrl()`  | Returns the current request URL with query strings.|
|`request.method()` |Returns the current request HTTP method (GET, POST, etc).|
|`request.ip()`|Returns the user’s IP address.|
|`request.accepts([‘json’, ‘html’])` |Returns the response format according to the accept header.|
|`request.hostname()`|Returns the request hostname.|
|`request.protocol()`|Returns the request protocol.|
|`request.file(name, validateOptions)`|Returns a file instance.|

For a comprehensive list of request methods, refer to the [official documentation](https://adonisjs.com/docs/4.1/request). 

## Method spoofing


HTML forms can only make GET and POST requests. To use other HTTP methods like PUT and DELETE in HTML forms, we can add `_method` to the form action, and AdonisJs will do the rest.

Let’s say we want to send a form with the PUT method request to change user information. Here is what the code would look like:

```
<form method="POST" action="/users?_method=PUT"></form>
```

In AdonisJs, method spoofing is enabled by default. You can verify this by looking at the `allowMethodSpoofing` variable in **config/app.js**.

# Request methods

The following are some useful request methods:

| **Method**   | **Description**  | 
|----------|:-----------|
| `request.all()`  | Returns an object that contains all request data (including query params and request body data).|
| `request.get()` | Returns an object that contains query params data.|
| `request.post()`  | Returns an object containing request body data from the submitted form.|
| `request.input(key)`  | Returns the value of the specified key.|
| `request.only([key1, key2])`   |Returns an object with only the specified keys.|
| `request.except([key])` |Returns an object with everything except the specified key(s).|
| `request.header()` |Returns an object containing all header data.|
|  `request.url()`  |Returns the current request URL.|
| `request.originalUrl()`  | Returns the current request URL with query strings.|
|`request.method()` |Returns the current request HTTP method (GET, POST, etc).|
|`request.ip()`|Returns the user’s IP address.|
|`request.accepts([‘json’, ‘html’])` |Returns the response format according to the accept header.|
|`request.hostname()`|Returns the request hostname.|
|`request.protocol()`|Returns the request protocol.|
|`request.file(name, validateOptions)`|Returns a file instance.|

For a comprehensive list of request methods, refer to the [official documentation](https://adonisjs.com/docs/4.1/request). 

# Method spoofing


HTML forms can only make GET and POST requests. To use other HTTP methods like PUT and DELETE in HTML forms, we can add `_method` to the form action, and AdonisJs will do the rest.

Let’s say we want to send a form with the PUT method request to change user information. Here is what the code would look like:

```
<form method="POST" action="/users?_method=PUT"></form>
```

In AdonisJs, method spoofing is enabled by default. You can verify this by looking at the `allowMethodSpoofing` variable in **config/app.js**.

Discover useful request methods and learn about method spoofing.

Before We Begin

Introduction

Routing and Middleware

Controllers and Views

Request and Response

Session, Validator and Logger

Database

Hooks, Mail and Events

Tests

Conclusion

Appendix

Request Methods and Method Spoofing

Request methods