Modifying resource tags at runtime

I always thought it is possible to modify resource tags at runtime:



Even if I include this in a snippet and put it at the beginning of my template it will not affect [*longtitle].

However, If I do this it returns 'foo':



I see that I can manipulate my modResource object, but somehow this has not influence on the page rendering. Is there a way to change this? XPDO?

It might be a question of scope... your "$resource" variable isn't global, so changing its attributes won't stick when the template is parsed. I know during some plugin events, for example, you can use as an alias for the current resource, and since it's attached to the MODX super-variable, that *would* stick around. I don't know if you have access to that variable inside a Snippet however, but it might be worth a try.

You're creating a new object with the data from the resource object in the database. That's not the object being parsed for the page.

It might (or might not) work to use this:




If it makes sense to do what you're doing in a plugin. You can create one attached to OnParseDocument, and just use str_replace to replace the tags before they're parsed. That would be the most efficient.

If that doesn't work and you want a dynamic longtitle, I'd just replace the longtitle field tag with a snippet tag and have the snippet return whatever you want to go there.

Another option would be to use a built-in or custom output modifier to use in the longtitle tag.