Textpattern CMS

#1 2010-01-16 18:36:58

paagocom

New Member

Registered: 2010-01-16

Posts: 3

if-then-else logic in TextPattern

Hello all,

I am new to TextPattern and just read the book by Potts, Sable and Smith.

Currently I am working on a project involving the mlp and zem_event plugins. It seems that there are some logic shortcomings in the zem_event plugin that make it incompatible with mlp.

An a workaround, I am trying to determine if there is a way to write some php code in a page where I can set the value of a php variable to the value of a txp tag. This way, I can perform some more complex logic evaluations.

<txp:php

global $foo;

$foo = ‘<txp:l10n_get_lang />’;

if ($foo == ‘en’) { do something
}
</txp:php>

is there anyway to evaluate a txp tag inside some php code?

Many thanks,

Mark

#2 2010-01-16 18:48:54

Mary

Sock Enthusiast

Registered: 2004-06-27

Posts: 6,236

Re: if-then-else logic in TextPattern

All Txp tags are PHP functions. So of the above you have the following function available to you: l10n_get_lang().

#3 2010-01-16 20:16:32

els

Moderator

From: The Netherlands

Registered: 2004-06-06

Posts: 7,458

Re: if-then-else logic in TextPattern

There even is <txp:l10n_if_lang>...<txp:else />...</txp:l10n_if_lang> :)

#4 2010-01-16 20:16:52

paagocom

New Member

Registered: 2010-01-16

Posts: 3

Re: if-then-else logic in TextPattern

Thanks for the quick reply.

The snipit I suggested would yield $foo set to a string. How would you force the txp tag/function to be evaluated from within your php code?

#5 2010-01-16 20:26:29

els

Moderator

From: The Netherlands

Registered: 2004-06-06

Posts: 7,458

Re: if-then-else logic in TextPattern

I can’t help you with the php code, but depending on what you ‘do something’ is it may well be possible to achieve it with tags only. Or you can wait for Mary ;)

#6 2010-01-17 17:04:51

paagocom

New Member

Registered: 2010-01-16

Posts: 3

Re: if-then-else logic in TextPattern

Thanks everyone for the posts and help.

In the end, I found some work arounds using the txp:variable and txp:if_variable tags that allowed me enough conditional logic control to do what was required. It was not required to break out into raw PHP.

The first workaround was used to output the correct static language strings in a txp page/form.

<txp:variable name=“lang” value=’<txp:l10n_get_lang />’ />
<txp:if_variable name=“lang” value=“nl”> Text in het nederlands
<txp:else /> Text in English
</txp:if_variable>

The second workaround was used to deal with a shortcoming of MLS where I had to filter out articles not in the current language. To do this, one simply has to look for articles with a null “” permlinks.

<txp:variable name=“url” value=’<txp:zem_event_permlink />’ />
<txp:if_variable name=“url” value=”“> <!— do nothing —>
<txp:else /> <txp:zem_event_date format=”%d %b” class=”“ wraptag=”“ /> – <txp:zem_event_permlink> <txp:zem_event_name wraptag=”“ /> </txp:zem_event_permlink>
</txp:if_variable>

I hope this helps someone else down the line.

:)

#7 2010-01-17 17:21:39

els

Moderator

From: The Netherlands

Registered: 2004-06-06

Posts: 7,458

Re: if-then-else logic in TextPattern

paagocom wrote:

The first workaround was used to output the correct static language strings in a txp page/form.

That’s what snippets are for: just add ##snippet_name## in your page/form, and then find the snippet in MLP > snippets, and add the translations.