Global Variable Parsing in Add-On Module

Question

Trying to figure out what appears to be a global variable parse issue in a module add-on template tag.

Here's a sample of the tag used in the template:

{exp:syn_fb_comments:show url="{current_url}"}{fb_comments}{/exp:syn_fb_comments:show}

---

In the module, when I grab the param url:

$url = $this->EE->TMPL->fetch_param( 'url' );

My understanding is that the {current_url} tag should already be parsed as the actual URL. However, in fetching the parameter value, it returns the raw tag itself, {current_url}.

Question, is there something specific that needs to be done to have these template variables parsed before processing the tagdata for the add-on?

Assuming either I'm missing something simple here, or I'm just doing it wrong! Any insight is appreciated.

EE Version 2.5.5

Answer 1

I think UltraBob is right in that if you need a global variable available inside the module you need parse them inside the add-on. parse_globals() looks to be the way to do so (thanks to this answer on Stack Overflow).

The following will show that the parsed global is available in the module:

$parameter = $this->EE->TMPL->fetch_param('parameter_name');
$parameter = $this->EE->TMPL->parse_globals($parameter);
echo 'The parsed global is: ' . $parameter;
die();

Answer 2

I think you either have to return global variables as they stand and let the parser handle them later on, or if you actually need to do something with them, you'd need to actually parse them inside your add-on.

The global variables are stored in $this->EE->config->_global_vars, so I guess one thing to do would be to parse through looking for {} pairs and doing something like

foreach ($matched_brace_contents as $potential_global_var) {
    if ( isset( $this->EE->config->_global_vars[$potential_global_var] )) {
        //do your worst
    }
}

That is untested code, and may very well need some work, but hopefully it gives an idea of one way of checking if the curly brace pair you see is a global variable or not?

Alternatively, perhaps the Template class can do what you need without you needing to do it on your own.

Answer 3

The answers here didn't work for me, but a simple query does. Just in case this helps soneone else...

$sql = "select variable_data from exp_global_variables where variable_name = '$glob_var' ";
$results = $this->EE->db->query($sql);
$row = $results->first_row();  //returns an object
$global_var_value = $row->variable_data;  //get result from property