PHP, Smarty: Check for template in different folders

PHPsmartytemplates

for our latest project we used Django, where one can specify a list of folders, that are searched for a template, say, with name example.html. Now, we switched back to Smarty (PHP) and are wondering, if there is something similar.

Smarty version: Can be cutting-edge.

Behaviour:

Feed Smarty with an array of folders.
Call a template either with $smarty->display() or {include}.
Smarty searches through the folders and takes the first template matching the name.

I looked at Smarty resources, but they look like overkill for this task, and the docs are a bit sparse on this topic. Any ideas how this could be done?

An additional problem is, that the list of folders may change depending on the requested URL. Any ideas how to tell Smarty, which compiled template to use?

Cheers,

Best Answer

In Smarty.class.php, in the method Smarty::_parse_resource_name() :

foreach ((array)$params['resource_base_path'] as $_curr_path) {
    $_fullpath = $_curr_path . DIRECTORY_SEPARATOR . $params['resource_name'];
    if (file_exists($_fullpath) && is_file($_fullpath)) {
        $params['resource_name'] = $_fullpath;
        return true;
    }
    // didn't find the file, try include_path
    $_params = array('file_path' => $_fullpath);
    require_once(SMARTY_CORE_DIR . 'core.get_include_path.php');
    if(smarty_core_get_include_path($_params, $this)) {
        $params['resource_name'] = $_params['new_file_path'];
        return true;
    }
}

$params['resource_base_path'] is defaulted to $this->template_dir in Smarty::_fetch_resource_info().

So it looks like you can set $smarty->template_dir to an array of directories to look in. Note that this won't be recursive. This must be an undocumented feature.

Related Solutions

Php – How to check if PHP array is associative or sequential

You have asked two questions that are not quite equivalent:

Firstly, how to determine whether an array has only numeric keys
Secondly, how to determine whether an array has sequential numeric keys, starting from 0

Consider which of these behaviours you actually need. (It may be that either will do for your purposes.)

The first question (simply checking that all keys are numeric) is answered well by Captain kurO.

For the second question (checking whether the array is zero-indexed and sequential), you can use the following function:

function isAssoc(array $arr)
{
    if (array() === $arr) return false;
    return array_keys($arr) !== range(0, count($arr) - 1);
}

var_dump(isAssoc(['a', 'b', 'c'])); // false
var_dump(isAssoc(["0" => 'a', "1" => 'b', "2" => 'c'])); // false
var_dump(isAssoc(["1" => 'a', "0" => 'b', "2" => 'c'])); // true
var_dump(isAssoc(["a" => 'a', "b" => 'b', "c" => 'c'])); // true

C++ – Templated check for the existence of a class member function

Yes, with SFINAE you can check if a given class does provide a certain method. Here's the working code:

#include <iostream>

struct Hello
{
    int helloworld() { return 0; }
};

struct Generic {};    

// SFINAE test
template <typename T>
class has_helloworld
{
    typedef char one;
    struct two { char x[2]; };

    template <typename C> static one test( decltype(&C::helloworld) ) ;
    template <typename C> static two test(...);    

public:
    enum { value = sizeof(test<T>(0)) == sizeof(char) };
};
    
int main(int argc, char *argv[])
{
    std::cout << has_helloworld<Hello>::value << std::endl;
    std::cout << has_helloworld<Generic>::value << std::endl;
    return 0;
}

I've just tested it with Linux and gcc 4.1/4.3. I don't know if it's portable to other platforms running different compilers.

Best Answer

Related Solutions

Php – How to check if PHP array is associative or sequential

C++ – Templated check for the existence of a class member function

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