Table which can add, edit ,and delete data dynamically in Drupal - mysql

Question

I know that we can add edit and delete data in a table statically in Drupal. But is there any way we can add edit and delete data via clicking a link just near to each row so that on clicking "add " button should generate a new row, and on clicking edit should highlight all the contents of the row as fr editing and delete should remove the row. The basic table I created is this:
<?php
$header = array('Emp ID', 'Emp Name', 'Emp Age');
$rows = array();
$sql = 'SELECT empid, name, age FROM {employee} ORDER BY name';
$result = db_query($sql);
while ($row = db_fetch_array($result)) {
$rows[] = $row;
}
print theme('table', $header, $rows);
?>

Answer 1

You can build it. You've already got your Read mode, so you need a Create/Update/Delete... there is some help on the internet for basic CRUD modules. Very basically, the update part, (first having a menu hook using % wildcard which is what arg(1) will be:
function crud_module_edit_form() {
$result = db_select('employee', 'e')
->fields('e', array('empid', 'name'))
->condition('empid', arg(1), '=')
->orderBy('name', 'DESC')
->execute()
->fetch();
$form['name'] = array(
'#type' => 'textfield',
'#title' => t('Name'),
'#default_value' => isset($result->name) ? $result->name : '',
'#required' => TRUE,
);
return $form;
}
Then the submit function for the above form to update the record. You could use db_merge here instead and then use the same page for both the Add and the Update functions.
function crud_app_edit_form_submit($form, &$form_state) {
db_update('employees')
->fields(array(
'name' => check_plain($form_state['values']['name']),
))
->condition('empid', arg(1), '=')
->execute();
drupal_set_message(t('Employee updated'));
}