Accept Header Interpreter

Table of Contents

• About
• Features
• Installation
• Examples
  • First Example: Entering valid content
  • Second Example: Entering invalid content
  • Third Example: Priority
  • Fourth Example: Displaying the original content of the Accept Header
• Changelog
• Contributing
• License

About

Accept Header toolbox 🧰 to Laravel. Validation and interpretation based on RFC 7231, section 5.3.1 and 5.3.2. Conversion of the list of media types to ordered Laravel Collections (by priority, according to RFC).

Features

• Validation: Validates if Accept Header content is valid, according to specification;
• Conversion: Converts the list of media types to a Laravel Collection (automatically sorted by priority according to specification);

Installation

composer require ejetar/accept-header-interpreter

Examples

First Example: Entering valid content

use Ejetar\AcceptHeaderInterpreter\AcceptHeaderInterpreter;

try {
  $content = request()->headers->get('Accept'); //return accept header content
  //let's assume that $content is now: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
  
  $acceptHeaderInterpreter = new AcceptHeaderInterpreter($content);
  dd($acceptHeaderInterpreter->toCollection());
  
} catch (\Exception $ex) {
  echo $ex->getMessage();
}

/* the code above will print
Collection {#756 ▼
  #items: array:6 [▼
    0 => array:3 [▼
      "type" => "text"
      "subtype" => "html"
      "parameters" => array:1 [▼
        "q" => 1
      ]
    ]
    1 => array:3 [▼
      "type" => "application"
      "subtype" => "xhtml+xml"
      "parameters" => array:1 [▼
        "q" => 1
      ]
    ]
    3 => array:3 [▼
      "type" => "image"
      "subtype" => "webp"
      "parameters" => array:1 [▼
        "q" => 1
      ]
    ]
    4 => array:3 [▼
      "type" => "image"
      "subtype" => "apng"
      "parameters" => array:1 [▼
        "q" => 1
      ]
    ]
    2 => array:3 [▼
      "type" => "application"
      "subtype" => "xml"
      "parameters" => array:1 [▼
        "q" => "0.9"
      ]
    ]
    5 => array:3 [▼
      "type" => "*"
      "subtype" => "*"
      "parameters" => array:1 [▼
        "q" => "0.8"
      ]
    ]
  ]
}

REALIZE THAT THE ORDER OF MEDIA TYPES HAS BEEN MODIFIED
*/

Second Example: Entering invalid content

use Ejetar\AcceptHeaderInterpreter\AcceptHeaderInterpreter;

try {
  $content = request()->headers->get('Accept'); //return accept header content
  //let's assume that $content is now: text/html,application/xhtml+xml,application/xml;q=1.1,image/webp,image/apng,*/*;q=0.8
  //It is only allowed to inform values from 0 to 1 for the parameter Q, that is, the contents of this Accept Header is invalid
  
  $acceptHeaderInterpreter = new AcceptHeaderInterpreter($content);
  dd($acceptHeaderInterpreter->toCollection());
  
} catch (\Exception $ex) {
  echo $ex->getMessage();
}

/* the code above will print
Accept header value is invalid!
*/

Third Example: Priority

use Ejetar\AcceptHeaderInterpreter\AcceptHeaderInterpreter;

try {
  $content = request()->headers->get('Accept'); //return accept header content
  //let's assume that $content is now: */*, application/*, text/html, application/xhtml+xml
  
  $acceptHeaderInterpreter = new AcceptHeaderInterpreter($content);
  dd($acceptHeaderInterpreter->toCollection());
  
} catch (\Exception $ex) {
  echo $ex->getMessage();
}

/* the code above will print
Collection {#756 ▼
  #items: array:4 [▼
    2 => array:3 [▼
      "type" => " text"
      "subtype" => "html"
      "parameters" => array:1 [▼
        "q" => 1
      ]
    ]
    3 => array:3 [▼
      "type" => " application"
      "subtype" => "xhtml+xml"
      "parameters" => array:1 [▼
        "q" => 1
      ]
    ]
    1 => array:3 [▼
      "type" => " application"
      "subtype" => "*"
      "parameters" => array:1 [▼
        "q" => 1
      ]
    ]
    0 => array:3 [▼
      "type" => "*"
      "subtype" => "*"
      "parameters" => array:1 [▼
        "q" => 1
      ]
    ]
  ]
}

NOTE THAT ORDER OF THE MEDIA TYPES IS NO LONGER THE SAME, IT WAS MODIFIED AS A PRIORITY, ACCORDING TO THE SPECIFICATION.
*/

Fourth Example: Displaying the original content of the Accept Header

use Ejetar\AcceptHeaderInterpreter\AcceptHeaderInterpreter;

try {
  $content = request()->headers->get('Accept'); //return accept header content
  //let's assume that $content is now: application/json
  
  $acceptHeaderInterpreter = new AcceptHeaderInterpreter($content);
  echo $acceptHeaderInterpreter->getOriginalContent();
  
} catch (\Exception $ex) {
  echo $ex->getMessage();
}

/* the code above will print
application/json
*/

Changelog

Nothing for now...

Contributing

Contribute to this wonderful project, it will be a pleasure to have you with us. Let's help the free software community. You are invited to incorporate new features, make corrections, report bugs, and any other form of support. Don't forget to star in this repository! 😀

License

This library is a open-source software licensed under the MIT license.