MODX :: PHx, Template Variables and Wayfinder

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worchyld Reply #1, 2 years, 11 months ago

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I have created a rowTpl for Wayfinder and a Template Variable, [+sitemap_exclude+] which can be a 0 or 1.

If its 1 then this means to hide the entry from the sitemap.

<li[+wf.id+][+wf.classes+]>
[+phx:if=`[+sitemap_exclude+]`:is=`0`:then=`[+sitemap_exclude+]`+]
[+sitemap_exclude+] -- 
<a href="[+wf.link+]" title="[+wf.title+]" [+wf.attributes+]>[+wf.linktext+]</a>[+wf.wrapper+]</li>

The problem is:

1) If I do this:

[+phx:if=`[+sitemap_exclude+]`:is=`1`:then=`{{Sitemap_rowTpl}}`+]

Nothing ever appears.

I am trying to figure out what I am doing wrong with respects to the PHX, I want it to do this:

1. If the [+sitemap_exclude+] = 1 then show the list-item in my Wayfinder &rowTpl

But for some reason it doesn't work.

What is the correct way of doing this?

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sottwell Reply #2, 2 years, 11 months ago

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That's not a template variable tag, that's a placeholder tag. If you've created a TV, then you need [*...*] tags for it.

362

worchyld Reply #3, 2 years, 11 months ago

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Hi there.

Thanks for your reply.

I tried:

// Chunk: WF_rowTpl_Sitemap
// Chunk for the &rowTpl Wayfinder
[+phx:if=`[*sitemap_exclude*]`:is=`0`:then=`{{Sitemap_rowTpl}}`+]

Sitemap_rowTpl is:

<li[+wf.id+][+wf.classes+]><a href="[+wf.link+]" title="[+wf.title+]" [+wf.attributes+]>[+wf.linktext+]</a>[+wf.wrapper+]</li>

But I still get nothing returned/displayed, even though there should be something there.

If I put:

// Chunk: WF_rowTpl_Sitemap
// Chunk for the &rowTpl Wayfinder
[+phx:if=`[*sitemap_exclude*]`:is=`0`:then=`[+wf.linktext+]`+]

I get:

Home About Us Destination Guides Contact Us FAQs Latest Deals

But I do not get any sub-items, or indeed any of the children living in FAQs, even though there are children that are included.

// Template Variable: sitemap_exclude
Radio Options
Input Option Values: Include==0||Exclude==1
Default Value: 0

362

worchyld Reply #4, 2 years, 11 months ago

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It doesn't matter what I do, the Sitemap_Exclude template variable and PHX simply does not pick up the exclude/include value.

I've tried using a snippet to resolve the problem, however I do not understand why this isn't working properly.

[edit]

I've tried creating a simple checkbox with the value of "Yes" if it is checked, assigning it to a FAQ child page and then using the &rowTpl to ask whether the value is the default value of "0", and if is it is, then display the child page.

I've tried 3 different ways to get &rowTpl from Wayfinder and PHX to work with template variables and display a child page on an if-else statement and it just won't have it.

4

kal_exan Reply #5, 2 years, 2 months ago

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I encountered a similar problem and I found the following solution.

Let's say that a Wayfinder template chunk contains the following code:

[+phx:if=`[+template_variable+]`:is=`1`:then=`TV is one.`:else=`TV is NOT one.`+]

The evaluation fails because the template variable's value is not yet available in the PHx evaluation context. Try inserting the template variable in a "hidden" place, for example:

<span="display:none;">[+template_variable+]</span>
[+phx:if=`[+template_variable+]`:is=`1`:then=`It is one.`:else=`It is NOT one.`+]

The above worked for me. I am sure that there must be a better way to make the template variable's value available at the PHx evaluation context...

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sharkbait Reply #6, 2 years, 2 months ago

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I've tried using a snippet to resolve the problem, however I do not understand why this isn't working properly.

hey worchyld,

would you like to share the snippet ... i'm trying to achieve the same

thanks, j

2

djad33 Reply #7, 7 months, 3 weeks ago

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I know this is an old post, but I stumbled across it trying to find the answer to this same problem. Using kal_exan's explanation as to why it doesn't work until the variable's value can be evaluated, I used the variable as part of an undefined class name in the Wayfinder template chunk, like this:

<li class="myClass [+wf.classnames+] type[+template_variable+]">[+phx:if=`[+template_variable+]`:is=`0`:then=`OPTION A`:else=`OPTION B`+]</li>

'type' is the undefined class that is only used to allow for evaluation of the variable. It would print as 'type0' or 'type1'

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microcipcip Reply #8, 6 months ago

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Hi, after some test I have finally got this working. This is what I have done:

1. Create a Template Variable with the following values:
TV Name: dropdown-menu
TV Description: Show Dropdown Menu?
TV Type: DropDown List Menu
Input Option Values: Yes==0||No==dropdown-none

2. Now add &rowTpl=`chunkname` to your wayfinder snippet call:

[[Wayfinder?  &rowTpl=`chunkname` &parentClass=`dropdown`]]

3. Now go to "chunkname" chunk and put a code similiar to this one:

   
<li class="[+wf.classnames+] [+dropdown-menu+]">
<a href="[+wf.link+]">[+wf.linktext+]</a>
[+phx:if=`[+dropdown-menu+]`:is=`dropdown-none`:then=``:else=`[+wf.wrapper+]`+]
</li>

4. Now, open a resource in the root of your website which has children, set the dropdown for the TV previously created to "No", and then save.

MODX will apply a "dropdown-none" class to the <li> tag of that resource, so basically we can hide arrows or whatever we use to indicate that there is a dropdown menu, using just css. The PHx call will also stop the output for the second level of the menu in the html, so we don't have to hide it with css.

Important: remember that you have to put [+dropdown-menu+] placeholder before the PHx Call, if you remove it PHx will not work.

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cipa Reply #9, 6 months ago

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Important: remember that you have to put [+dropdown-menu+] placeholder before the PHx Call, if you remove it PHx will not work.

I never understood why PHx does this. Any ideas?

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sottwell Reply #10, 6 months ago

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PHx has its own garbage collection to remove its unused placeholders. Unfortunately it also eats any other placeholders in the document object, and since the MODx parser doesn't get to processing placeholders until after the PHx plugin is run, all placeholders are destroyed. I suspect a flaw in the regular expression that PHx uses in scanning for its placeholders when running its garbage collection routine. It should be possible for that regular expression to leave non-PHx placeholders alone, but I'm not experienced enough at regular expressions to try to figure it out.