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/** * Implements hook_block_info(). */ function approval_block_info() { $blocks['pending_comments'] = array( 'info' => t('Pending Comments'), 'status' => TRUE, 'region' => 'sidebar_first', 'weight' => 0, 'visibility' => 1, return $blocks;

); }

Listing 5-6. Vertex.m #import "Vertex.h" #import "Polygon.h"

Complete all three steps by inserting the following method into the Admin class: < php class Admin extends DB_Connect { private $_saltLength = 7; public function __construct($db=NULL, $saltLength=NULL) {...} public function processLoginForm() {...} /** * Generates a salted hash of a supplied string * * @param string $string to be hashed * @param string $salt extract the hash from here * @return string the salted hash */ private function _getSaltedHash($string, $salt=NULL) { /* * Generate a salt if no salt is passed */ if ( $salt==NULL ) { $salt = substr(md5(time()), 0, $this->_saltLength); } /* * Extract the salt from the string if one is passed */ else { $salt = substr($salt, 0, $this->_saltLength); } /*

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Figure 10-4. Pending comments is now a block listed on the block overview page under the Sidebar First region heading. Note that the value of info isn t the title of the block that shows up to users once the block is enabled; rather, info is a description that appears only in the list of blocks the administrator can configure. You ll implement the actual block title later in hook_block_view. First, though, you re going to set up additional configuration options. To do this, implement the hook_block_configure function as shown in the following code snippet. You create a new form field that s visible after clicking the configure link next to the block on the block administration page, shown in Figure 10-5. /** * Implements hook_block_configure(). */ function approval_block_configure($delta) { $form = array(); switch($delta) { case 'pending_comments':

@implementation Vertex @dynamic @dynamic @dynamic @dynamic @end y; x; index; polygon;

$form['pending_comment_count'] = array( '#type' => 'textfield', '#title' => t('Configure Number of Comments to Display'), '#size' => 6, '#description' => t('Enter the number of pending comments that will appear in the block.'), '#default_value' => variable_get('pending_comment_count', 5), ); break; } return $form; }

To see how salted hashes work, create a quick test method for _getSaltedHash() called testSaltedHash(). This will be a public function that calls and outputs the values, enabling you to see how the script functions. In the Admin class, define the testSaltedHash() method: < php class Admin extends DB_Connect { private $_saltLength = 7; public function __construct($db=NULL, $saltLength=NULL) {...} public function processLoginForm() {...} private function _getSaltedHash($string, $salt=NULL) {...} public function testSaltedHash($string, $salt=NULL) { return $this->_getSaltedHash($string, $salt); } } > Next, add a new file called test.php to use this function and place it in the public folder (/public/test.php). Inside this function, call the initialization file, create a new Admin class, and output three hashes of this word: test. Create the first hash with no salt, and then sleep for one second to get a new timestamp. Create the second hash with no salt, and then sleep for another second. Finally, create the third hash using the salt from the second hash. Insert the following code to accomplish this test: < php // Include necessary files include_once '../sys/core/init.inc.php'; // Load the admin object

Figure 10-5. Block configuration form with the block s custom fields When the block configuration form shown in Figure 10-5 is submitted, it will trigger hook_block_save(). You ll use this next phase to save the value of the form field: /** * Implements hook_block_save(). */ function approval_block_save($delta = '', $edit = array()) { switch($delta) { case 'pending_comments': variable_set('pending_comment_count', (int)$edit['pending_comment_count']); break; } return; }

Finally, verify that Xcode updated your data model for the Vertex entity and changed the associated class from NSManagedObject to Vertex. Open the data model, select the Vertex entity, and look at its properties. The value in the Class field should say Vertex, as shown in Figure 5-11.

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