Drupal custom form get and record current user - mysql

Question

I looked up on the internet and write an custom module.
I want to add a form for people to add some information into database.
I use "data" module to create a table called "profile".
And my module's code is (addfood.module):
<?php
/**
* Implements hook_menu().
*/
function addfood_menu() {
$items['food/add'] = array(
'title' => '新增食物檔案',
'page callback' => 'addfood_page',
'access callback' => TRUE,
);
return $items;
}
/**
* Implements hook_permission.
*/
function addfood_permission() {
return array(
'addfood module' => array(
'title' => t('Addfood module permission'),
));
}
/**
* Returns form render array.
*/
function addfood_form($form, &$form_state) {
if (user_access('addfood module')) {
//Allowed
$form['name'] = array(
'#title' => t('名稱'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['calorie'] = array(
'#title' => t('卡路里'),
'#type' => 'textfield',
'#required' => TRUE,
'#description' => t('填寫卡路里(單位：千卡)'),
);
$form['water'] = array(
'#title' => t('水'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['protein'] = array(
'#title' => t('蛋白質'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['saturated_fat'] = array(
'#title' => t('飽和脂肪'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['trans_fat'] = array(
'#title' => t('反式脂肪'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['carbohydrates'] = array(
'#title' => t('碳水化合物'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['dietary_fiber'] = array(
'#title' => t('膳食纖維'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['cholesterol'] = array(
'#title' => t('膽固醇'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['sodium'] = array(
'#title' => t('鈉'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['sugars'] = array(
'#title' => t('糖'),
'#type' => 'textfield',
'#required' => TRUE,
);
$form['notes'] = array(
'#title' => t('Please explain your what makes you a prime candidate for our beta test'),
'#type' => 'textarea',
'#resizable' => TRUE,
'#description' => t('Beta spaces are limited, but let us know if there is a really good reason to let you in.'),
);
$form['submit'] = array(
'#type' => 'submit',
'#value' => 'Submit',
);
return $form;
} else {
//Access denied
header('Location: ../user/login?destination=food/add');
}
}
/**
* Menu callback.
*/
function addfood_page() {
return drupal_get_form('addfood_form');
}
/**
* Submission handler for form_example -> Insert into database
*/
function addfood_form_submit($form, &$form_state) {
$fe_id = db_insert('profile')
->fields(array(
'name' => $form_state['values']['name'],
'calorie' => $form_state['values']['calorie'],
'water' => $form_state['values']['water'],
'protein' => $form_state['values']['protein'],
'saturated_fat' => $form_state['values']['saturated_fat'],
'trans_fat' => $form_state['values']['trans_fat'],
'carbohydrates' => $form_state['values']['carbohydrates'],
'dietary_fiber' => $form_state['values']['dietary_fiber'],
'cholesterol' => $form_state['values']['cholesterol'],
'sodium' => $form_state['values']['sodium'],
'notes' => $form_state['values']['notes'],
))
->execute();
drupal_set_message(t('HO GYA Submit!!!!'));
return $form;
}
?>
If I want to record who add the information automatically(by get the current username).
Anyone has idea how to do it? Thank you.
Figure is my table schema.
(source: libk.info)

Answer 1

You can use global user variable to get current user. You can test it:
<?php
global $user;
print_r($user->name);
?>