SOLVED how to cal a snippet from within a snippet?

85 Posts

djemmers Reply #1, 12 years, 2 months ago

hi

I have an xpdo set up to handle data in an external db.
That works fine

but now as I am coding my site,
I find that I reuse some code quite a lot.

for example getting categories from my external db and putting them in an array.
Instead of letting each snippet execute that code over and over,
I would like to put it in a snippet of his own and call that from within the other snippets.
that way I can call my categories cached and I don't need to recode it each time!
But I can't seem to get that working: I always get the error "unexpected [" that is the [ from the snippet call in my snippet

can you still follow?

example [[blabla]] works fine
[[getcategories]]also works fine

but if I use [[getcategories]] in [[blabla]] I get the error above

can anyone help? [ed. note: djemmers last edited this post 12 years, 2 months ago.]

www.tornooi.net online database for (sport) events in dutch.
To be redesigned, rewritten to modx with multiple languages...
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sottwell Reply #2, 12 years, 2 months ago

You can't use snippet tags in PHP code. Use the API function instead.
http://rtfm.modx.com/display/revolution20/modX.runSnippet

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387 Posts

whistlemaker Reply #3, 12 years, 2 months ago

You need to use code tags in your post - otherwise we the readers do not see anything

code goes inside  code tags
any code not inside code tags gets eaten by the code monster
good idea to click the view button to confirm your post content

If you want to run a snippet from within a snippet you can use modX.runSnippet - see here for information and syntax: http://rtfm.modx.com/display/revolution20/modX.runSnippet

5,888 Posts

Bruno17 Reply #4, 12 years, 2 months ago

Quote from: djemmers at Feb 28, 2012, 11:28 AM

hi

I have an xpdo set up to handle data in an external db.
That works fine

but now as I am coding my site,
I find that I reuse some code quite a lot.

for example getting categories from my external db and putting them in an array.
Instead of letting each snippet execute that code over and over,
I would like to put it in a snippet of his own and call that from within the other snippets.
that way I can call my categories cached and I don't need to recode it each time!
But I can't seem to get that working: I always get the error "unexpected [" that is the [ from the snippet call in my snippet

can you still follow?
example
[[blabla]] 
works fine
[[getcategories]]
also works fine

but if I use
[[getcategories]] in [[blabla]]
I get the error above

can anyone help?

you can try

[[blabla? &categories=`[[getcategories]]`]]

[NOTE]

you can't return an array by snippets, only string can be returned
but you can return an json-string by your getcategories-snippet

return $modx->toJson($mycategories);

and get it back as array in your blabla-snippet by

$mycategories = $modx->fromJson($categories);

-------------------------------

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Thanks!

387 Posts

whistlemaker Reply #5, 12 years, 2 months ago

Cross posted again - Have to stop getting up for coffee while posting!

85 Posts

djemmers Reply #6, 12 years, 2 months ago

tnx guys, I got it to work now!

www.tornooi.net online database for (sport) events in dutch.
To be redesigned, rewritten to modx with multiple languages...
ANY help appreciated, I cannot offer money but I can offer free advertising on the site. just message me.

85 Posts

djemmers Reply #7, 12 years, 2 months ago

apparently I did not get it working:
my inner snippet:
getcategories ends with:

return $modx->toJson($categories);

outer snippet:
blabla

$mycategories=$modx->fromJson($modx->runSnippet('getcategories'));
print_r($mycategories);

but the blabla snippet shows 2 arrays:
first the array I want ( the print_r command)
but after that also the same array in another format ( I presume the Json format)

how can I get only the print_r one?

www.tornooi.net online database for (sport) events in dutch.
To be redesigned, rewritten to modx with multiple languages...
ANY help appreciated, I cannot offer money but I can offer free advertising on the site. just message me.

85 Posts

djemmers Reply #8, 12 years, 2 months ago

actulaly
above code works.
I had another call to getcategories somewhere else...

so tnx guys,

solved

www.tornooi.net online database for (sport) events in dutch.
To be redesigned, rewritten to modx with multiple languages...
ANY help appreciated, I cannot offer money but I can offer free advertising on the site. just message me.