README

PSR LinkInterface implementation for le7 MVC framework or any PHP8 PSR project This is not "clean" implementation, this is combination of EnvolvedLinkInterface, UriInterface and own ULinkInterface.

Requirements

• PHP 8.1
• Composer

Installation

composer require rnr1721/le7-links

Testing

composer test

Usage

Link

The Link class represents a LinkInterface, UriInterface and own ULinkInterface with additional functionality for manipulating URIs and rendering HTML anchor tags.

First, import the Link class:

use Core\Links\Link;

Create an instance of the Link class by providing the URI, link relation types, and additional attributes:

$link = new Link('https://example.com/page1', ['rel1'], ['attribute1' => 'value1']);

Retrieving URI Components

You can retrieve different components of the URI using the following methods:

$scheme = $link->getScheme();
$authority = $link->getAuthority();
$userInfo = $link->getUserInfo();
$host = $link->getHost();
$port = $link->getPort();
$path = $link->getPath();
$query = $link->getQuery();
$fragment = $link->getFragment();

Modifying URI Components

You can create a modified version of the link by using the following methods:

$newLink = $link->withScheme('https');
$newLink = $link->withUserInfo('username', 'password');
$newLink = $link->withHost('example.com');
$newLink = $link->withPort(8080);
$newLink = $link->withPath('/new-path');
$newLink = $link->withQuery('param1=value1&param2=value2');
$newLink = $link->withFragment('section1');

Rendering HTML Anchor Tags

To render the link as an HTML anchor tag, use the render method:

$html = $link->render();

The render method returns a string containing the HTML anchor tag.

Link Attributes

You can retrieve and modify the link's relation types and additional attributes using the following methods:

$rels = $link->getRels();
$hasRel = $link->hasRel('rel1');
$attributes = $link->getAttributes();
$href = $link->getHref();
$isTemplated = $link->isTemplated();
$attributeValue = $link->getAttribute('attribute1');

You can create a modified version of the link with updated relation types and attributes using the following methods:

$newLink = $link->withHref('https://example.com/page2');
$newLink = $link->withRel('rel2', 'rel3');
$newLink = $link->withoutRel('rel1');
$newLink = $link->withAttribute('attribute2', 'value2');
$newLink = $link->withoutAttribute('attribute1');

String Conversion

You can obtain the string representation of the link using the magic __toString method:

$string = (string)$link;

LinkProvider

The LinkProvider class is an implementation of the EvolvableLinkProviderInterface from the PSR-Link library. It is used to store and manage links.

First, import the LinkProvider class:

use Core\Links\LinkProvider;

Create an instance of the LinkProvider class:

$linkProvider = new LinkProvider();

Adding Links

To add a link to the provider, use the withLink method:

use Core\Links\Link;

$link = new Link('https://example.com/page1', ['rel1'], ['attribute1' => 'value1']);
$linkProvider = $linkProvider->withLink($link);

You can chain multiple withLink calls to add multiple links:

$link1 = new Link('https://example.com/page1', ['rel1'], ['attribute1' => 'value1']);
$link2 = new Link('https://example.com/page2', ['rel2'], ['attribute2' => 'value2']);

$linkProvider = $linkProvider->withLink($link1)
                           ->withLink($link2);

Retrieving Links

To retrieve all the links in the provider, use the getLinks method:

$links = $linkProvider->getLinks();

The getLinks method returns an array of LinkInterface objects.

Removing Links

To remove a link from the provider, use the withoutLink method:

$linkProvider = $linkProvider->withoutLink($link);

Filtering Links

To retrieve links based on their relationship, use the getLinksByRel method:

$filteredLinks = $linkProvider->getLinksByRel('rel1');

The getLinksByRel method returns an array of LinkInterface objects that have the specified relationship.

Adding Multiple Links

To add multiple links at once, use the withLinks method:

$links = [
    new Link('https://example.com/page1', ['rel1'], ['attribute1' => 'value1']),
    new Link('https://example.com/page2', ['rel2'], ['attribute2' => 'value2']),
];

$linkProvider = $linkProvider->withLinks($links);

Removing Multiple Links

To remove multiple links at once, use the withoutLinks method:

$linkProvider = $linkProvider->withoutLinks($links);

The withoutLinks method takes an array of LinkInterface objects and removes them from the provider.