Custom Node Creation

Code in manomodule.module file

/* Error handling */
error_reporting(E_ALL);
ini_set("display_errors","On");


/**
 *
 * Implementation of menu hook
 */ 
function manomodule_menu() {
    $items = array();
    $items['test_form'] = array(
      'title' => t('Test form'),   
      'page callback' => 'get_products',
      'access callback' => TRUE,
      'type' => MENU_CALLBACK,
    );
    
  
    return $items;
}


/**
 *
 * Implementation of theme hook
 */ 
function manomodule_theme() {
    return array(
         'page_node_form' => array(
          'arguments' => array('form' => NULL),
                  'template' => 'product-list',
    ),       
    );
}

function get_products() {
      /* Create a new node and form creation */
    $node = new stdClass();
    $node->type = 'page';
    module_load_include('inc', 'node', 'node.pages');   
    $form_arr = drupal_get_form('page_node_form',$node);
    return $form_arr;
}

/**
 *
 * Implementation of form alter hook
 */ 
function manomodule_form_alter(&$form, &$form_state, $form_id) {
    /* Theme alter based on form id */
    if ($form_id == 'page_node_form') {
        $form['#theme'] = 'page_node_form';
    }
}

/**
 *
 * Implementation of node related process hook
 */ 
function manomodule_nodeapi(&$node, $op) {
    if ($node->type == 'page') {
        switch ($op) {
            case 'insert':
                $_SESSION['fromform'] = 'product';
                break;
            case 'view':
                // redirect to thank you page when submit
                // and workflow process done.
                $fromform = $_SESSION['fromform'];
                unset($_SESSION['fromform']);
                if ($fromform == 'product') {
                    drupal_goto('admin/content/node');
                }
                break;
        }
    }
}

Code in product-list.tpl.php


print drupal_render($form['title']);
print drupal_render($form['body_field']['body']);

print drupal_render($form['form_id']);
print drupal_render($form['form_build_id']);
print drupal_render($form['form_token']);
print drupal_render($form['buttons']['submit']);

/* print drupal_render($form); */