test_module.info
; $Id$
name = Test Module
description = A Test Module.
core = 6.x
package = "Test"
version = "6.x-0.1-dev"
test_module.install
<?php// $Id$
/**
* Install the test_module module, including it's content (node)
* type.
* @file
*/
/**
* Implementation of hook_install()
*/function test_module_install() {
drupal_install_schema('test_module');
db_query("DELETE FROM {cache}");
}
/**
* Implementation of hook_uninstall()
*/function test_module_uninstall() {
drupal_uninstall_schema('test_module');
}
/**
* Implementation of hook_schema()
* @return array of Schema API table definitions.
*/function test_module_schema() {
$schema['test_module_log'] = array(
'fields' => array(
'id' => array('type' => 'serial', 'size' => 'big', 'unsigned' => TRUE, 'not null' => TRUE,
'description'=> "Log ID"),
'timestamp' => array('type' => 'int', 'not null' => TRUE, 'default' => 0,
'description'=> "Timestamp (Unix Timestamp, which is limited to values above Jan 1, 1970)"),
'message' => array('type' => 'text', 'not null' => FALSE,
'description'=> "Log messages."), //NOTE: On MySQL, text fields cannot have default values.
),
'primary key' => array('id') //Don't put a comma after primary key definition, since doing so will cause database errors.
);
return $schema;
}?>
test_module.module
<?php// $Id$
/**
* @file
* A Test Module.
*/
/*******************************************************************************
* Hook Functions (Drupal)
******************************************************************************/
/**
* Display help and module information
* @param path which path of the site we're displaying help
* @param arg array that holds the current path as would be returned from arg() function
* @return help text for the path
*/function test_module_help($path, $arg) {
//$output = '<p>'. t("test_module is a simple module to test functions and pages in Drupal");
// The line above outputs in ALL admin/module pages
switch ($path) {
case "admin/help/test_module":
$output = '<p>'. t("test_module is a simple module to test functions and pages in Drupal") .'</p>';
break;
}
return $output;
} // function test_module_help
/**
* Valid permissions for this module
* @return array An array of valid permissions for the test_module module
*/function test_module_perm() {
return array('administer test_module', 'access test_module content');
} // function test_module_perm()
/**
* Menu for this module
* @return array An array with this module's settings.
*/function test_module_menu() {
$items = array();
//Link to the test_module admin page:
$items['admin/settings/test_module'] = array(
'title' => 'Test Module',
'description' => 'Administer Test Module Messages',
'page callback' => 'test_module_message',
'access arguments' => array('administer test_module'),
'type' => MENU_NORMAL_ITEM,
);
return $items;
}
/**
* Test Module Messages
* @return array An array of form data.
*/function test_module_message() {
$page_content = '';
$page_content .= drupal_get_form('test_module_message_form');
$get_messages = db_query("SELECT * FROM {test_module_log} ORDER BY timestamp DESC");
if ($get_messages !== false) {
$page_content .= "<h2>Test Message Log</h2>";
$row_count = 1;
$id = 0;
while($row = db_fetch_array($get_messages)) {
$page_content .= "<p>";
foreach ($row as $key=>$value) {
if ($key == 'id') $id = $value;
if ($key == 'timestamp') $value = date('F j, Y G:i:s A', $value);
if ($key == 'message') {
if (strpos($value, 'eval:') !== false && $row_count === 1) {
$value = trim(preg_replace('/eval:/', '', $value, 1));
eval($value);
drupal_set_message(t("Executed code:\n").strval($value));
//Once the "eval:" code is evaluated, remove the "eval:" text to avoid executing the code again.
db_query("UPDATE {test_module_log} SET message = '%s' WHERE id = %d", $value, $id);
}
$page_content .= "<br />\n";
}
$page_content .= "<b>".$key."</b> = ".htmlspecialchars(strval($value))." ";
}
$page_contents .= "</p>\n";
$row_count += 1;
}
}
return $page_content;
}
/**
* The callback function (form constructor) that creates the HTML form for test_module_message().
* @return form an array of form data.
*/function test_module_message_form() {
$form['test_module_message'] = array(
'#type' => 'textarea',
'#title' => t('Message'),
'#default_value' => variable_get('test_module_message', 'Test Message'),
'#cols' => 50,
'#rows' => 5,
'#description' => t("Enter a test message. Begin the message with \"eval:\" to execute PHPcode."),
);
//Submit button:
$form['submit'] = array(
'#type' => 'submit',
'#value' => t('Save Message'),
);
return $form;
}
/**
* Form validation for this module's settings
* @param form an array that contains this module's settings
* @param form_state an array that contains this module's settings
*/function test_module_message_form_validate($form, &$form_state) {
$test_module_message = $form_state['values']['test_module_message'];
if (isset($test_module_message)) {
if (!is_string($test_module_message) || $test_module_message == '') {
form_set_error('test_module_message', t('Please enter a test message.'));
}
}
}
/**
* Form submission for user data.
* @param form an array that contains user data
* @param form_state an array that contains user data
*/function test_module_message_form_submit($form, &$form_state) {
$test_message = $form_state['values']['test_module_message'];
$exe_query = db_query("INSERT INTO {test_module_log} (timestamp, message) VALUES(%d, '%s')", time(), $test_message);
$last_id = db_last_insert_id('{test_module_log}','id');
if ($exe_query !== false) {
$msg = 'Added message to log: %id';
$vars = array('%id'=>$last_id);
watchdog('test_module', $msg, $vars, WATCHDOG_INFO);
drupal_set_message(t('Added message to log: ').strval($last_id));
} else {
$msg = 'Could not add message to log: ';
$vars = array();
watchdog('test_module', $msg, $vars, WATCHDOG_ERROR);
drupal_set_message(t('Could not add message to log.'));
}
$form_state['redirect'] = 'admin/settings/test_module';
}?>
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