Below is a simple CodeIgniter Contentful CMS library that I created for this website. It connects to the REST API and returns entries, assets or a single entry.
It’s really easy to configure and can be customised as needed. As with any CI library, it should be placed within application/libraries (saved as Contentful.php).
Add your space ID and tokens within the construct() - you can split this out into a separate config file if you prefer.
<?php
class Contentful {
function __construct() {
// Space Id
$this->space_id = '';
// Content Delivery (Published) Token
$this->access_token = '';
// Content Preview (Draft) Token
$this->access_token_preview = '';
// Endpoint for Content Delivery (Published)
$this->base_url = sprintf('https://cdn.contentful.com/spaces/%s/', $this->space_id);
// Endpoint for Content Preview (Draft)
$this->base_url_preview = sprintf('https://preview.contentful.com/spaces/%s/', $this->space_id);
}
The get() method below is the main API call that can be used to return a list of entries, assets or a single entry. Passing an array of parameters allows you to filter the response.
/*
|--------------------------------------------------------------------------
| Get Content
|--------------------------------------------------------------------------
|
| Single function to return JSON content from Contentful API.
|
| @param $method (string) - E.g. 'entries', 'entry', 'assets' etc
| @param $params (array) - Array of parameters to pass as url queries
| @param $preview (bool) - If true, uses the preview endpoint
|
*/
public function get($method=false, $params=array(), $preview=false) {
if ($method !== false) {
// If $preview is set to true, use the content preview endpoint
// and preview access token
if ($preview === true) {
$this->base_url = $this->base_url_preview;
$this->access_token = $this->access_token_preview;
}
// Add the access_token to the endpoint
$url_params = sprintf('?access_token=%s', $this->access_token);
if (!empty($params) && is_array($params)) {
$url_params .= '&'.http_build_query($params);
}
$endpoint = sprintf('%s%s/%s', $this->base_url, $method, $url_params);
$response = file_get_contents($endpoint);
if (!empty($response)) {
$data = json_decode($response, true);
return $data;
} else {
return false;
}
} else {
return false;
}
}
The get_entry() method below returns a single entry based on the slug. I’ve called my field urlHandle, so you’ll need to change the ‘fields.urlHandle’ line to reference your particular slug field.
/*
|--------------------------------------------------------------------------
| Get Entry
|--------------------------------------------------------------------------
|
| Returns content for the passed entry (url handle).
|
| @param $content_type (string) - As set in Contentful
| @param $handle (string) - URL handle/slug of the entry to return
| @param $preview (bool) - If true, will use the content preview endpoint
|
*/
public function get_entry($content_type, $handle, $preview=false) {
$params = array(
'content_type' => $content_type,
'fields.urlHandle' => $handle
);
$response = $this->get('entries', $params, $preview);
if (!empty($response['items'])) {
return $response['items'][0]['fields'];
} else {
return false;
}
}
} // End of class
All methods are called using the usual CI syntax, for example:
$this->contentful->get('entries');
Have fun! (I did!)
Download the library via Github at: https://github.com/ketanmistry/Codeigniter-Contentful-Library