character.install

function character_schema() {
  $schema['character'] = array (
    'description' => 'The main store for our entity',
    'fields' => array(
      'pid' => array(
        'description' => 'Primary key for our table of characters',
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'note' => array(
        'description' => 'The actual note',
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE
      ),
    ),
    'primary key' => array('pid'),
  );

  return $schema;
}

character.module

function character_entity_info(){
  $character_info['character'] = array(
    'label' => t('Character Note'),
    'controller class' => 'CharacterController',
    'base table' => 'character',
    'uri callback' => 'character_uri',
    'fieldable' => TRUE,
    'entity keys' => array(
      'id' => 'pid',
    ),
    'static cache' => TRUE,
    'bundles' => array(
      'character'=> array(
        'label' => 'Character',
        'admin' => array(
          'path' => 'admin/structure/character/manage',
          'access arguments' => array('administer characters'),
        ),
      ),
    ),
    'view modes' => array(
      'full' => array(
        'label' => t('Full Character'),
        'custom settings' =>  FALSE,
      ),
    )
  );

  return $character_info;
}

function character_uri($character){
  return array(
    'path' => 'character/' . $character->id,
  );
}

function character_load($pid = NULL, $reset = FALSE){
  $pids = (isset ($pid) ? array($pid) : array());
  $character = character_load_multiple($pids, $reset);
  return $character ? reset ($character) : FALSE;
}

function character_load_multiple($pids = array(), $conditions = array(), $reset = FALSE){
  return entity_load('character', $pids, $conditions, $reset);
}

function character_menu(){
  $items['character/add'] = array(
    'title' => 'Add Character!',
    'page callback' => 'character_add',
    'access arguments' => array('create character'),
  );
  $items['admin/structure/character/manage'] = array(
    'title' => 'Character Admin',
    'description' => 'Manage Character structure',
    'page callback' => 'character_info',
    'access arguments' => array('administer characters'),
  );
  $items['character/%character'] = array(
    'title callback' => 'character_page_title',
    'title arguments' => array(1),
    'page callback' => 'character_page_view',
    'page arguments' => array(1),
    'access arguments' => array('view characters'),
    'type' => MENU_CALLBACK,
  );
  return $items;
}

function character_permission(){
    return array(
    'administer characters' =>  array(
      'title' => t('Administer characters'),
      'restrict access' => TRUE,
    ),
    'view postsits' => array(
      'title' => t('View Characters'),
    )
  );
}


function character_info() {
  return ('Welcome to the administration page for your Characters!');
}

function character_page_title($character){
  return $character->pid;
}

function character_page_view($character, $view_mode = 'full'){
  $character->content = array();

  // Build fields content.
  field_attach_prepare_view('character', array($character->pid => $character), $view_mode);
  entity_prepare_view('character', array($character->pid => $character));
  $character->content += field_attach_view('character', $character, $view_mode);

  return $character->content;
}


function character_field_extra_fields() {
  $return = array();
  $return['character']['character'] = array(
    'form' => array(
      'note' => array(
        'label' => t('Note'),
        'description' => t('Character Note'),
      ),
    ),
  );

  return $return;
}

function character_add() {
  $character = (object) array (
    'pid' => '',
    'type' => 'character',
    'note' => '',
  );
  
  return drupal_get_form('character_add_form', $character);
}


function character_add_form($form, &$form_state, $character) {
  $form['note'] = array(
    '#type' => 'textfield',
    '#title' => t('Note'),
    '#required' => TRUE,
  );
  
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save'),
  );
  
  field_attach_form('character', $character, $form, $form_state);
  
  return $form;
}

function character_add_form_validate($form, &$form_state) {
  $character_submisttion = (object) $form_state['values'];
  field_attach_form_validate('character', $character_submisttion, $form, $form_state);
}

function character_add_form_submit($form, &$form_state) {
  $character_submission = (object) $form_state['values'];
  field_attach_submit('character', $character_submission, $form, $form_state);
  $character = character_save($character_submission);
  $form_state['redirect'] = "character/$character->pid";
}

function character_save(&$character) {
  return entity_get_controller('character')->save($character);
}