String substitution question

Hi,

I need to by default put the title of a document into a template variable and replace the spaces with an underscore "_". I am sure this is very easy to do but I’m not quite sure where to start, please help.

Tore

Use a plugin to copy the data to the TV when saving the document. Take a look at this plugin for an example of how to approach this:
http://modxcms.com/forums/index.php/topic,36496.0.html

Just have a look at some string-functions of PHP.
http://us2.php.net/manual/en/function.str-replace.php

You could set a default value to every template variable using the @-bindings.
http://svn.modxcms.com/docs/display/MODx096/What+are+(at)+Bindings

Not tested, but might work this way
@EVAL return str_replace(" ", "_", ’[*pagetitle*]’);

Thanks for the help on this. The string substitution should work and is kind of what I was thinking of but for some reason it ignores the substitution and just returns the pagetitle

As an example I have the page title set to VC and have put in the following to test it:

@EVAL return strtr(’[*pagetitle*]’, "V", "O");

but the TV just returns VC, i.e it doesn’t substitute the V with the O.

BTW I did also try @EVAL return str_replace(" ", "_", ’[*pagetitle*]’); but that didn’t work either. :’(

Approved... the str_replace returns the string without replacing the occurences... strange.

What you might do now...

Create a snippet that takes a string as an argument, modifies it and returns the modified value.

Call that snippet via the @EVAL-binding and let it return the output of that snippet.

Your TV might take this as a default value:
@EVAL return $modx->runSnippet(’test_str’, array(’string’=> ’[*pagetitle*]’));

Your snippet should look like this for example:



This should work, but doesn´t. The passed string might be no "real" string consisting of single characters...
Is it URL-encoded, HTML or somewhat?

You can’t use MODx tags in PHP code. If you have PHP code in a snippet or a TV with @EVAL you have to use one of the $modx API functions or arrays. For example:

Thank you Susan. Again.
Take the variable from the documentObject and you’re fine.

PHP took that MODx-Tag as text, but PHP couldn´t get it as I expected it to do. Strange behaviour.

Quote from: sottwell at Jul 06, 2009, 07:07 AM

You can’t use MODx tags in PHP code. If you have PHP code in a snippet or a TV with @EVAL you have to use one of the $modx API functions or arrays. For example:

@EVAL return str_replace(" ", "_", $modx->documentObject['pagetitle']); 

Thanks a million Susan, I was kind of gradually getting there myself but it was a bloody frustrating journey so you just saved a me a lot of headaches

Also big thanks to Katzenfutter and dev_cw, this forum rocks