conditional PrevNext navigation - some help needed

616 Posts

mmjaeger Reply #1, 18 years, 10 months ago

Hello,

I’m trying to get some PrevNext navigation to work on all the childpages of a certain folder(category); I’was thinking of creating a @INHERIT TV so I could have an input field with e.g. the following: ’sortBy=createdon||sortHow=DESC||displayTitle=false’; this would be the parameters I would need to pass to the PrevNext script.

What I’m struggling with at the moment is how to convert a string like that to an parameter array so I could pass it to the snippet:

here is a start:

$tv    = $modx->getTemplateVarOutput('tvPrevNext', $modx->documentIdentifier);
$str = $tv['tvPrevNext'];
....

return $modx->runSnippet('PrevNext',$param);

I guess explode(’||’,$str) would give me a first array but how do I go from there?

Hope somebody can help.

P.S. if somebody has a better idea of how to do this, please let me know as well.

Thank you guys

Thank you in advance for your input.

Maybe, I’m a little closer - this is what I have and it seems that I’m able to set the parameters:

$tv    = $modx->getTemplateVarOutput('tvPrevNext', $modx->documentIdentifier);
$array = explode('|', $tv['tvPrevNext']);
$param = array();
foreach ($array as $key => $value) {
	$arr = explode('=', $value);
	
	$param[$arr[0]] = $arr[1];

}
return $modx->runSnippet('PrevNext',$param);

However, I guess there is an easier way?!

4,205 Posts

dev_cw Reply #2, 18 years, 10 months ago

To loop through the array PHP has the foreach() array function:
http://www.php.net/foreach

[font=Verdana]Shane Sponagle | [wiki] Snippet Call Anatomy | MODx Developer Blog | [nettuts] Working With a Content Management Framework: MODx

Something is happening here, but you don't know what it is.
Do you, Mr. Jones? - [bob dylan]

4,205 Posts

dev_cw Reply #3, 18 years, 10 months ago

Something like this might work:

<?php
$str = "sortBy=createdon||sortHow=DESC||displayTitle=false";
$str = explode('||',$str);

foreach ($str as $x) {
    //build the parameter string
    $x = explode('=',$x);
    $output .= '&'.$x[0].'=`'.$x[1].'` ';
}

echo $output;

?>

Edit: Pretty much the same as you have but this should return the entire string.
&sortBy=`createdon` &sortHow=`DESC` &displayTitle=`false`

[font=Verdana]Shane Sponagle | [wiki] Snippet Call Anatomy | MODx Developer Blog | [nettuts] Working With a Content Management Framework: MODx

Something is happening here, but you don't know what it is.
Do you, Mr. Jones? - [bob dylan]

616 Posts

mmjaeger Reply #4, 18 years, 10 months ago

really appreciate your input - from my understanding, the second argument of runSnippet needs to be an array, so a string won’t work.

4,205 Posts

dev_cw Reply #5, 18 years, 10 months ago

You are correct, here try this:

<?php
$tv = "tvPrevNext";
$str = $modx -> getTemplateVarOutput( $tv, $modx->documentIdentifier, $published = 1 );
//$str = "sortBy=createdon||sortHow=DESC||displayTitle=false";
$str = explode('||',$str[$tv]);
$param = array();

foreach ($str as $x) {
    $x = explode('=',$x);
    $param[$x[0]] = $x[1];
}

return $modx->runSnippet('PrevNext',$param); 

?>

Hope this works.

[font=Verdana]Shane Sponagle | [wiki] Snippet Call Anatomy | MODx Developer Blog | [nettuts] Working With a Content Management Framework: MODx

Something is happening here, but you don't know what it is.
Do you, Mr. Jones? - [bob dylan]

616 Posts

mmjaeger Reply #6, 18 years, 10 months ago

Quote from: dev_cw at Dec 22, 2007, 03:58 PM

You are correct, here try this:

<?php
$tv = "tvPrevNext";
$str = $modx -> getTemplateVarOutput( $tv, $modx->documentIdentifier, $published = 1 );
//$str = "sortBy=createdon||sortHow=DESC||displayTitle=false";
$str = explode('||',$str[$tv]);
$param = array();

foreach ($str as $x) {
    $x = explode('=',$x);
    $param[$x[0]] = $x[1];
}

return $modx->runSnippet('PrevNext',$param); 

?>

Hope this works.

Thanks again - this seems to work just fine - what I was wondering in general is this: from my understanding there are two way to achieve what I want:

1. I’ve something like this in my template: "[! call my snippet !]" - have some logic in the snippet and call the "PrevNext" snippet from here.
2. have a chunk in my template that would call my snippet

am I missing something - is one way better than the other or are they just about the same.

4,205 Posts

dev_cw Reply #7, 18 years, 10 months ago

The way I see it is if you want to be able to modify the snippet independently of other pages then a TV will give you more flexibility. However if you are going to use the same configuration throughout the site then a chunk may be lighter on the server.

[font=Verdana]Shane Sponagle | [wiki] Snippet Call Anatomy | MODx Developer Blog | [nettuts] Working With a Content Management Framework: MODx

Something is happening here, but you don't know what it is.
Do you, Mr. Jones? - [bob dylan]