Twig with MVC - 如何在运行操作文件后获取变量

Question

I'm building my PHP project with MVC and Twig and I'm having problem with return one variable string after form validation on action 'input'. Here is my controller file:

// index.php file - here is the begin

require_once './vendor/autoload.php';
//require_once "autoloader.php";
require_once "class/blogcore.php";
require_once "class/pagination.php";
require_once "class/post.php";
require_once "class/validation.php";

$conf = parse_ini_file("config.ini");
$lang = parse_ini_file($conf['LANG_PATH']);
$db = new PDO('mysql:host='.$conf['DB_HOST'].';dbname='.$conf['DB_NAME'].';charset='.$conf['DB_CHARSET'], $conf['DB_USER'], $conf['DB_PASS']);

/*
** This is the controller file
*/

$action = !empty($_GET['action']) ? $_GET['action'] : 'Index';
require_once 'actions/' . $action . '.php';

$action = new $action($db, $lang);
$data = $action->generate();
$template = $action->getTemplate();

if ($template) {
    $loader = new Twig_Loader_Filesystem('templates');
    $twig = new Twig_Environment($loader);
    echo $twig->render($template, $data);   
}

Here is my index.php file which is displaying the index page:

// '/class/index.php' file with class called 'Index'

class Index {
    private $lang;
    private $db;

    public function __construct($db, $lang) {
        $this->lang = $lang;
        $this->db = $db;
    }

    public function generate() {

        // new Core object 
        $core = new BlogCore($this->db);

        /*
        ** pagination
        */
        $numRows = $core->getNumRows();
        $pagination = new Pagination($_GET['p']);
        $pagination->setNumRows($numRows);
        $pagination->setLimit(3); // set 3 posts on one page
        $limit = $pagination->sqlPagination();
        $offset = $pagination->sqlPaginationOffset($limit);

        /*
        ** select detalis form database
        */
        $posts = $core->select($limit, $offset);

        return [
                "posts"         => $posts,
                "pagination"    => $pagination,
                "lang"          => $this->lang
                ];
    }

    public function getTemplate() {
        return "default.tpl";
    }
}

And here is the insert.php file which is used on action insert (just when I want do input new data from form to my db). Here I'm checking with regular expression that data filled in fields are correctly. And if not, here I want to return to template my variable which will be displaying notification for user.

// '/class/insert.php' file with 'Insert' class

class Insert {
    private $lang;
    private $db;
    private $postText;
    private $fileName;
    private $myFile;
    private $phoneValidate;
    private $urlValidate;

    public function __construct($db, $lang) {
        $this->lang = $lang;
        $this->db = $db;
    }

    public function generate() {

        $postText   = $_POST["postText"];
        $myFile     = $_FILES["myFile"];
        $fileName   = $myFile["name"];
        $phoneNum   = $_POST['phoneNumber'];
        $url        = $_POST['url'];

        $validate   = new Validation;

        $phoneValidate = "test";
        // phoneValidate for form validation
        if (!$validate->phoneNum(isset($phoneNum))) {
            $phoneValidate = "error";
        } else {
            $phoneValidate = "ok";
        }

        // new Core object
        $core = new BlogCore($this->db);

        // do insert in SQL
        if (!empty($postText)) {
            $core->insert($postText, $fileName);
            $core->saveFile($myFile);
        }

        header("Location: /codeme/06_blog_v5_mvc/index.php");
    }

    public function getTemplate() {
        return null;
    }
}

So the question is: how can I modify this file to get my index file (like I'm doing this actually with header() function and get additional value of variable called $phoneValidate? If You need, this project is shared on my BitBucket account: https://bitbucket.org/Pirum/simple-blog/src

Answer 1

Okay, the one of possible method how to get it is prepare url with 'GET' params in header() function.

So, modified class Insert is like below (only a matter lines I've attached):

$validate   = new Validation;

// phoneValidate for form validation
if (!$validate->phoneNum($phoneNum)) {
    $headerUrlParam .= $validate->returnUrlParam($headerUrlParam) . "validatePhoneNum=error";
}

// url forf validation
if (!$validate->url($url)) {
    $headerUrlParam .= $validate->returnUrlParam($headerUrlParam) . "validateUrl=error";
}

header("Location: /codeme/06_blog_v5_mvc/index.php" . $headerUrlParam);
}

The method returnUrlParam() in $validate object is used just for prepare the right sign '?' or '&' because when url ends on index.php we need to use the '?' sign and if there is already some 'GET' values, we need to use the '&' sign.

When user will fill the phoneNum field properly and the url field not correctly I want to return in URL only this one wrong value.

Sample#1: when url is wrong and phoneNum is correct: index.php?validateUrl=error Sample#2: when url and phoneNum is wrong: index.php?validatePhoneNum=error&validateUrl=error