Twitter Utilities

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Introduction

This module provides the following functionality * Embed tweets using a shortcode * Optionally include a script to enlarge images in embedded tweets so that you can have them larger than Twitter's normal minimum width * Twitter cards can be any type extending Page, provided an interface is implemented., _(*5)

Incorporate Twitter

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##Embedding Tweets
Tweets can be embedded into content using a shortcode like the following - the id parameter is the id of the tweet.

    [tweet id='537136515445710848']

## Enlarging Embedded Images

**** THIS NEEDS RETESTED ****, _(*7)

A script is included that you can include in your theme (either using require_javascript or a direct
 script include in the template) called twitteruril.js - include this and larger (at source size, 
 perhaps not theme size) embedded images will render on your site.

## Twitter Cards
In order for a page to render an title, description and image when included as a link in a tweet, it needs provide metadata known as a Twitter Card.  There are two steps to take in order to achieve this:

### Implement RenderableAsTwitterCard Interface
A  minimal example of a class implementing a Twitter card is shown below.

class PageWithImage extends Page implements RenderableAsTwitterCard { private static $db = array( 'ImageAttribution' => 'Varchar(255)', 'BriefIntroduction' => 'Text' );, _(*8)

static $has_one = array( 'MainImage' => 'Image' );, _(*9)

// implement the twitter card interface public function getTwitterTitle() { return $this->Title; }, _(*10)

public function getTwitterImage() { return $this->MainImage(); }, _(*11)

public function getTwitterDescription() { return $this->BriefIntroduction; }, _(*12)

}, _(*13)


### Template Changes
In your page template, add the following to inside <head></head> section of your page:

```txt
<% include TwitterSummaryCardLargeImage %>

This will check if the current page implements the RenderableAsTwitterCard interface. If so it will produce the relevant metadata for Twitter to render a Twitter Card., _(*14)

Test With Card Validator

Test out your twitter card using the Card Validator, https://cards-dev.twitter.com/validator on a publicly accessible version of your site - this will highlight any issues. It should also be noted that your site will probably need whitelisted., _(*15)