Looking for a Revo

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flinx777 Reply #1, 15 years, 1 month ago

In MODx Evo, I would use the "GetField" snippet for a lot of things (http://modx.com/extras/package/getfield). I primarily used it to go up the tree a certain number of levels from the current resource. I often did this in conjunction with PHx to determine if the current resource was a child, grandchild, or great grand child of a specific Resource. For example, I often had this in Evo to determine the depth of the current resource:

[+phx:if=`[[GetField? &field=`id` &parent=`1` &parentLevel=`2`]]`:is=`59`:then=`{{store_level2}}`:else=`{{store_level3}}`+]

I see in Revo there is the "getResourceField" snippet, but I'm not seeing how to determine the grandparent or great grandparent of a current Resource. My attempt is to do something like so:

-- Great Grandparent (1)
-- Grandparent (5)
--- Parent (45)
----- Child (77)

My goal would be to determine if the current resource is the grandchild of Resource 1, then output "X", but if the current Resource is a great grandchild of Resource 1, then output "Y". I'd be using MODx Revo "If" snippet of course. [ed. note: flinx777 last edited this post 15 years, 1 month ago.]

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romain Reply #2, 15 years, 1 month ago

Hi flinx,

You might want to have a look at the ultimateParent snippet (or over Github), which might achieve what you are looking for.

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flinx777 Reply #3, 15 years, 1 month ago

Hey Romain,

Thanks for your post.

I have been using the UltimateParent snippet for Revo, but it only tells you the top Resources from the root down. So for example, it will tell you the ultimate parent of the current resource at a level of "x". I need to be able to determine the ID of the resource a certain number of levels up from the current Resource. Seems the UltimateParent works the other way around (unless I'm missing something).

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romain Reply #4, 15 years, 1 month ago

Sorry, i was too hasty (also, i'm not using ultimateparent often).

Anyway, this post/snippet might be of any use.

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BobRay Reply #5, 15 years, 1 month ago

I can't think of any elegant way to do that in Revo (which doesn't mean there isn't one). The only thing that comes to mind is a set of pretty inelegant snippets:

<?php 
/* GetGrandParent */

$parent = $modx->resource->getOne('Parent');
$grandparent = $modx->resource->GetOne('Parent');
if ($grandparent) {
    return $grandparent->get('id');
} else {
    return "";
}

<?php
/* get GreatGrandParent */
$parent = $modx->resource->getOne('Parent');
$grandparent = $modx->resource->getOne('Parent');
$greatgrandparent = $grandparent->getOne('Parent');
if ($greatgrandparent) {
    return $greatgrandparent->get('id');
} else {
    return "";
}

A single snippet would be much more efficient; something like this:

[[!ShowStuff]]

<?
/* ShowStuff snippet */

$grandparentId = null;
$greatgrandparentId = null;

$parent = $modx->resource->getOne('Parent');
$grandparent = $modx->resource->getOne('Parent');
$greatgrandparent = $grandparent->getOne('Parent');
if ($grandparent) {
    $grandparentId = $grandparent->get('id');
}

if ($greatgrandparent) {
    $greatgrandparentID = $greatgrandparent->get('id');
}

if ($grandparentId == 1 {
    return 'x';
} else if ($greatgrandparentId == 1) {
    return 'y';
}
return "";

[ed. note: BobRay last edited this post 15 years, 1 month ago.]

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flinx777 Reply #6, 15 years, 1 month ago

Hey BobRay,

Thanks for the response ... will give it a spin. My hope was to find a snippet a little more flexible where a parameter could be specified to go up the tree a certain number of levels. The MODx Evo GetField snippet handled that easily with the "&parentLevel" parameter. Made it really easy for me in Evo to setup the tree structure in the backend so that clients didn't have to change templates or T.V.'s for certain levels in the tree to output certain content on the front of the site, but rather the snippet would output different content based on the level in the tree. But this may be a good starting point in the meantime.

Thanks again for posting that up!

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Bruno17 Reply #7, 15 years, 1 month ago

you can also try this simple snippet (untested):

<?php
//[[getParentId? &level=`3` ]]
//[[getParentId? &level=`2` &direction=`down`]]

$parentIds = $modx->getParentIds($modx->resource->get('id'),99);

return $direction=='down' ? $parentIds[count($parentIds)-$level-1] : $parentIds[$level-1];


?>

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BobRay Reply #8, 15 years, 1 month ago

I forgot about getParentIDs. That will be *much* more efficient than the method I posted.

I would be inclined to do it this way (untested):

<?php
//[[getParentId? &level=`3` ]] (greatgrandparent)
//[[getParentId? &level=`2`]]  (grandparent)
//[[getParentId? &level=`1`]]  (parent)
 
$parentIds = $modx->getParentIds($modx->resource->get('id'),99);
return $parentIds[$level-1];

I'm 99% sure that the array starts with the parent and goes up from there. If not, add this before the return statement:

$parentIds = array_reverse($parentIds);

I think the first item (the parent) is $parentIds[0]. If not you can take out the -1. [ed. note: BobRay last edited this post 15 years, 1 month ago.]

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flinx777 Reply #9, 15 years, 1 month ago

@Bob ... thanks so much ... will give this a try today and report back on it. Thanks!

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flinx777 Reply #10, 15 years, 1 month ago

@Bob ... finally implemented it today...works like a charm ... thanks so much, exactly what I needed!

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