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How use data from a array in a object methode

 
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andi_steiner
Smarty n00b


Joined: 17 Jul 2019
Posts: 2

PostPosted: Wed Jul 17, 2019 12:07 pm    Post subject: How use data from a array in a object methode Reply with quote

Hello All

PHP code is like this:
Code:

class myObj{
   protected $addr = [];

   public function addAddress($str){
      $this->addr[] = $str;
   }
   public function getAddresses(){
      return $this->addr;
   }

   ...... a lot of other functions comes here....
}

$obj = new myObj();
$obj->addAddress('aaa');
$obj->addAddress('bbb');
$obj->addAddress('ccc');

$obj2 = new myObj();
$obj2->addAddress('ddd');
$obj2->addAddress('eee');
$obj2->addAddress('fff');

$smarty = new Smarty();
$smarty->assign('obj', $obj);
$smarty->assign('obj2', $obj2);


HTML code is like this:
Code:

   {$obj->getAddresses()[0]} vs. {$obj2->getAddresses()[0]}


Why crash smarty by this code:
Code:
$obj->getAddresses()[0]

someone has a solution??
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bsmither
Smarty Pro


Joined: 20 Dec 2011
Posts: 245
Location: West Coast

PostPosted: Wed Jul 17, 2019 7:50 pm    Post subject: Reply with quote

What you are doing in the HTML SMARTY tags is called 'function array dereference' (FAD).

The question to answer is, is Smarty complaining about a syntax error, or is PHP crashing because the PHP version is older than when FAD was implemented (as of PHP 5.4)?
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AnrDaemon
Administrator


Joined: 03 Dec 2012
Posts: 1572

PostPosted: Thu Jul 18, 2019 1:01 pm    Post subject: Reply with quote

Code:
PHP Fatal error:  Uncaught  --> Smarty Compiler: Syntax error in template "file:C:\Users\Daemon\Documents\.github\test-001\testcase.php"  on line 1 "{$a->b()[0]}"  - Unexpected "[", expected one of: "}" <--
  thrown in C:\Users\Daemon\Documents\.github\test-001\vendor\smarty\smarty\libs\sysplugins\smarty_internal_templatecompilerbase.php on line 1


This is with @dev Smarty version. It seems the parser is not prepared.
Addressing the issue as a whole, please don't do this, ever.
Or best case, use ArrayAccess objects. Relying on language specifics to build your templates you are unnecessarily increasing the entry level to template writing.
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AnrDaemon
Administrator


Joined: 03 Dec 2012
Posts: 1572

PostPosted: Thu Jul 18, 2019 9:07 pm    Post subject: Reply with quote

Testcase https://github.com/AnrDaemon/test-001/tree/forum-27812
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andi_steiner
Smarty n00b


Joined: 17 Jul 2019
Posts: 2

PostPosted: Tue Jul 23, 2019 9:41 am    Post subject: Re: How use data from a array in a object methode Reply with quote

andi_steiner wrote:
Hello All

PHP code is like this:
Code:

class myObj{
   protected $addr = [];

   public function addAddress($str){
      $this->addr[] = $str;
   }
   public function getAddresses(){
      return $this->addr;
   }

   ...... a lot of other functions comes here....
}

$obj = new myObj();
$obj->addAddress('aaa');
$obj->addAddress('bbb');
$obj->addAddress('ccc');

$obj2 = new myObj();
$obj2->addAddress('ddd');
$obj2->addAddress('eee');
$obj2->addAddress('fff');

$smarty = new Smarty();
$smarty->assign('obj', $obj);
$smarty->assign('obj2', $obj2);


HTML code is like this:
Code:

   {$obj->getAddresses()[0]} vs. {$obj2->getAddresses()[0]}


Why crash smarty by this code:
Code:
$obj->getAddresses()[0]

someone has a solution??


I have found a solution for this problem:

Code:

   {assign "addr2" $obj2->getAddresses() nocache}
   {foreach $obj->getAddresses() as $addr}
      {$addr} vs. {addr2[$addr@index]}
   {/foreach}
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