我试着用codeigneter完成我的第一步，所以我在现有的类中编写了一个新的方法(函数(。
<?php
defined('BASEPATH') or exit('No direct script access allowed');
class App
{
/**
* Options autoload=1
* @var array
*/
private $options = [];
/**
* Quick actions create aside
* @var array
*/
private $quick_actions = [];
/**
* CI Instance
* @deprecated 1.9.8 Use $this->ci instead
* @var object
*/
private $_instance;
/**
* CI Instance
* @var object
*/
private $ci;
/**
* Show or hide setup menu
* @var boolean
*/
private $show_setup_menu = true;
/**
* Available reminders
* @var array
*/
private $available_reminders = ['customer', 'lead', 'estimate', 'invoice', 'proposal', 'expense', 'credit_note'];
/**
* Tables where currency id is used
* @var array
*/
private $tables_with_currency = [];
/**
* Media folder
* @var string
*/
private $media_folder;
/**
* Available languages
* @var array
*/
private $available_languages = [];
public function __construct()
{
$this->ci = & get_instance();
// @deprecated
$this->_instance = $this->ci;
$this->init();
do_action('app_base_after_construct_action');
}
/**
* Check if database upgrade is required
* @param string $v
* @return boolean
*/
public function is_db_upgrade_required($v = '')
{
if (!is_numeric($v)) {
$v = $this->get_current_db_version();
}
$this->ci->load->config('migration');
if ((int) $this->ci->config->item('migration_version') !== (int) $v) {
return true;
}
return false;
}
/**
* Return current database version
* @return string
*/
public function get_current_db_version()
{
$this->ci->db->limit(1);
return $this->ci->db->get('tblmigrations')->row()->version;
}
/**
* Upgrade database
* @return mixed
*/
public function upgrade_database()
{
if (!is_really_writable(APPPATH . 'config/config.php')) {
show_error('/config/config.php file is not writable. You need to change the permissions to 755. This error occurs while trying to update database to latest version.');
die;
}
$update = $this->upgrade_database_silent();
if ($update['success'] == false) {
show_error($update['message']);
} else {
set_alert('success', 'Your database is up to date');
if (is_staff_logged_in()) {
redirect(admin_url(), 'refresh');
} else {
redirect(site_url('authentication/admin'));
}
}
}
/**
* Make request to server to get latest version info
* @return mixed
*/
public function get_update_info()
{
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_SSL_VERIFYHOST => 0,
CURLOPT_USERAGENT => $this->ci->agent->agent_string(),
CURLOPT_SSL_VERIFYPEER => 0,
CURLOPT_TIMEOUT => 30,
CURLOPT_URL => UPDATE_INFO_URL,
CURLOPT_POST => 1,
CURLOPT_POSTFIELDS => [
'update_info' => 'true',
'current_version' => $this->get_current_db_version(),
],
]);
$result = curl_exec($curl);
$error = '';
if (!$curl || !$result) {
$error = 'Curl Error - Contact your hosting provider with the following error as reference: Error: "' . curl_error($curl) . '" - Code: ' . curl_errno($curl);
}
curl_close($curl);
if ($error != '') {
return $error;
}
return $result;
}
/**
* Return all available languages in the application/language folder
* @return array
*/
public function get_available_languages()
{
$languages = $this->available_languages;
return do_action('before_get_languages', $languages);
}
/**
* Function that will parse table data from the tables folder for amin area
* @param string $table table filename
* @param array $params additional params
* @return void
*/
public function get_table_data($table, $params = [])
{
$hook_data = do_action('before_render_table_data', [
'table' => $table,
'params' => $params,
]);
foreach ($hook_data['params'] as $key => $val) {
$$key = $val;
}
$table = $hook_data['table'];
$customFieldsColumns = [];
$path = VIEWPATH . 'admin/tables/' . $table . '.php';
if (file_exists(VIEWPATH . 'admin/tables/my_' . $table . '.php')) {
$path = VIEWPATH . 'admin/tables/my_' . $table . '.php';
}
include_once($path);
echo json_encode($output);
die;
}
/**
* Check if a option value is preset or individual
* @param string $name, string $value
* @return true/false
*/
public function option_is_preset($name,$value)
{
$str="`name`='".$name."' and value='".$value."' ";
$this->ci->db->select('id, name, value');
$this->ci->db->where($str);
$row = $this->ci->db->get('4U_tbloptions_preset')->row_array();
if ($row['id']>0) {
return true;
}
return false;
}
/**
* All available reminders keys for the features
* @return array
*/
public function get_available_reminders_keys()
{
return $this->available_reminders;
}
/**
* Get all db options
* @return array
*/
public function get_options()
{
return $this->options;
}
/**
* Function that gets option based on passed name
* @param string $name
* @return string
*/
public function get_option($name)
{
if ($name == 'number_padding_invoice_and_estimate') {
$name = 'number_padding_prefixes';
}
$val = '';
$name = trim($name);
if (!isset($this->options[$name])) {
// is not auto loaded
$this->ci->db->select('value');
$str="`name`='".$name."' and `maccid`='".$this->ci->session->userdata('macc_id')."'";
$this->ci->db->where($str);
$row = $this->ci->db->get('4U_accounts_tbloptions')->row();
if ($row) {
#echo"Wert aus account_tbloptions";
$val = $row->value;
}
} else {
#echo $name.'->'.$val.' Autoload - nicht aus DB!<br>';
$val = $this->options[$name];
}
$hook_data = do_action('get_option', ['name' => $name, 'value' => $val]);
//Fallback auf Standardwert
if ($hook_data['value']=='')
{
$this->ci->db->select('value');
$this->ci->db->where('name', $name);
$row = $this->ci->db->get('4U_tbloptions_preset')->row();
if ($row) {
#echo"Wert aus preset";
$val = $row->value;
}
$hook_data = do_action('get_option', ['name' => $name, 'value' => $val]);
}
return $hook_data['value'];
}
/**
* Add new quick action data
* @param array $item
*/
public function add_quick_actions_link($item = [])
{
$this->quick_actions[] = $item;
}
/**
* Quick actions data set from admin_controller.php
* @return array
*/
public function get_quick_actions_links()
{
$this->quick_actions = do_action('before_build_quick_actions_links', $this->quick_actions);
return $this->quick_actions;
}
/**
* Aside.php will set the menu visibility here based on few conditions
* @param int $total_setup_menu_items total setup menu items shown to the user
*/
public function set_setup_menu_visibility($total_setup_menu_items)
{
$this->show_setup_menu = $total_setup_menu_items == 0 ? false : true;
}
/**
* Check if should the script show the setup menu or not
* @return boolean
*/
public function show_setup_menu()
{
return do_action('show_setup_menu', $this->show_setup_menu);
}
/**
* Return tables that currency id is used
* @return array
*/
public function get_tables_with_currency()
{
return do_action('tables_with_currency', $this->tables_with_currency);
}
/**
* Return the media folder name
* @return string
*/
public function get_media_folder()
{
return do_action('get_media_folder', $this->media_folder);
}
/**
* Upgrade database without throwing any errors
* @return mixed
*/
private function upgrade_database_silent()
{
$this->ci->load->config('migration');
$beforeUpdateVersion = $this->get_current_db_version();
$this->ci->load->library('migration', [
'migration_enabled' => true,
'migration_type' => $this->ci->config->item('migration_type'),
'migration_table' => $this->ci->config->item('migration_table'),
'migration_auto_latest' => $this->ci->config->item('migration_auto_latest'),
'migration_version' => $this->ci->config->item('migration_version'),
'migration_path' => $this->ci->config->item('migration_path'),
]);
if ($this->ci->migration->current() === false) {
return [
'success' => false,
'message' => $this->ci->migration->error_string(),
];
}
update_option('upgraded_from_version', $beforeUpdateVersion);
return [
'success' => true,
];
}
/**
* Init necessary data
*/
protected function init()
{
//Autoloadfelder zuerst alle Presetfelder, die dann mit den Individualfeldern ueberschrieben werden
$optionsA = $this->ci->db->select('name, value')
->where('autoload', 1)
->get('4U_tbloptions_preset')->result_array();
$str=" 'maccid'='".$this->ci->session->userdata('macc_id')."' AND 'autoload'='1' ";
$optionsB = $this->ci->db->select('name, value')
->where($str)
->get('4U_accounts_tbloptions')->result_array();
$options=array_merge($optionsA, $optionsB);
// Loop the options and store them in a array to prevent fetching again and again from database
foreach ($options as $option) {
$this->options[$option['name']] = $option['value'];
}
/**
* Available languages
*/
foreach (list_folders(APPPATH . 'language') as $language) {
if (is_dir(APPPATH . 'language/' . $language)) {
array_push($this->available_languages, $language);
}
}
/**
* Media folder
* @var string
*/
$this->media_folder = do_action('before_set_media_folder', 'media');
/**
* Tables with currency
* @var array
*/
$this->tables_with_currency = [
[
'table' => 'tblinvoices',
'field' => 'currency',
],
[
'table' => 'tblexpenses',
'field' => 'currency',
],
[
'table' => 'tblproposals',
'field' => 'currency',
],
[
'table' => 'tblestimates',
'field' => 'currency',
],
[
'table' => 'tblclients',
'field' => 'default_currency',
],
[
'table' => 'tblcreditnotes',
'field' => 'currency',
],
[
'table' => 'tblsubscriptions',
'field' => 'currency',
],
];
}
/**
* Predefined contact permission
* @deprecated 1.9.8 use get_contact_permissions() instead
* @return array
*/
public function get_contact_permissions()
{
return get_contact_permissions();
}
}
现在我想使用这种方法，例如
echo"Test1: ".get_option('company_logo_dark');
echo"Test2: ".option_is_preset('company_logo_dark');
方法"get_option"是类中现有的方法之一。
这(get_option(起作用，但option_is_present产生错误"调用未定义的函数option_is_prest((">
如果我尝试
echo "Test3: ".$this->app->option_is_preset('company_logo',$company_logo);
它会起作用的。
为什么我可以用这种方式使用第一个方法"get_option"(echo"Test:".get_option(string(；"为什么我不能对另一种方法采取同样的方法？
非常感谢您对我的支持：-(
在类内部，您需要使用伪变量$this
echo"Test1: ". $this->get_option('company_logo_dark');
echo"Test2: ". $this->option_is_preset('company_logo_dark', 'some_value');
取消类的实例：
$instance = new App();
echo"Test1: ". $instance ->get_option('company_logo_dark');
echo"Test2: ". $instance ->option_is_preset('company_logo_dark', 'some_value');
如果类应用程序放置在库目录中，则可以使用Codeigniter Loader类
$this->load->library('app');
echo"Test1: ". $this->app->get_option('company_logo_dark');
echo"Test2: ". $this->app->option_is_preset('company_logo_dark', 'some_value');
编辑1
get_option方法只有在类外声明时才能直接调用。请参阅下一个示例
function method_a($var) {
echo __METHOD__ . ' : ' . $var .'<br />';
}
class MyClass {
public function method_a($var) {
echo __METHOD__ . ' : ' . $var .'<br />';
$this->method_b($var);
}
public function method_b($var) {
echo __METHOD__ . ' : ' . $var .'<br />';
}
}
$instance = new MyClass();
$instance->method_a("Test");
method_a("Test");
这将返回：
MyClass::method_a : Test
MyClass::method_b : Test
method_a : Test
编辑2
根据更新后的类，方法option_is_preset接受两个参数，$name和$value，并且您试图只使用一个参数进行调用
echo"Test2: ".option_is_preset('company_logo_dark'); // wrong
echo"Test2: ".option_is_preset('company_logo_dark', 'some_value'); // correct
在另一个文件中，我发现
function get_option($name)
{
$CI = & get_instance();
if (!class_exists('app')) {
$CI->load->library('app');
}
return $CI->app->get_option($name);
}
这就解释了为什么可以用函数的正常方式调用"get_option"。
所以我添加了
function option_is_preset($name, $value)
{
$CI = & get_instance();
if (!class_exists('app')) {
$CI->load->library('app');
}
return $CI->app->option_is_preset($name, $value);
}
现在我可以像函数一样调用新方法：-(