Get the URL of the first Child: How?

64 Posts

gemand Reply #1, 10 years ago

There are several methods to get the url of the first child of a resource. But which one is the best?

1. Wayfinder? Probably totally oversized?

2. GetResources?

3. GetResourcesFields?

4. huh

24,544 Posts

BobRay Reply #2, 10 years ago

This snippet might do it if you're not too picky about which is the first child (generally, you'll get the first one created):

$docId = $modx->resource->get('id');
$children = $modx->getChildIds($docId);

if (! empty($children)) {
   return $modx->makeUrl($children[0], "", "", "full");
} else {
   return 'No Children';
}

If you want the first child defined by menuindex, it would be something like this:

$docId = $modx->resource->get('id');
$url = 'No Children';

$c = $modx->newQuery('modResource');
$c->sortby('menuindex', 'ASC');
$c->select(array('id','parent'));
$c->limit(1);
$c->where(array('parent' => $docId));

$childObj = $modx->getCollection('modResource', $c);

if ($childObj) {
    $childId = $childObj->get('id');
    $url = $modx->makeUrl($childId, "", "", "full");
}

return $url;

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64 Posts

gemand Reply #3, 10 years ago

Hi Bob,
thanks a lot!!! But does this mean that there is really no already existing plugin/snippet which returns the url of the first child?

As we need the first child which is not hidden from the menus can we use for this purpose your second code? Or did I misunderstand your posting?

And many thanks a lot again!!!

5,888 Posts

Bruno17 Reply #4, 10 years ago

if you prefer to use existing snippets, example with getResources:

[[getResources? &parents=`XXX` &limit=`1` &sortby=`menuindex` &sortorder=`ASC` &tpl=`resourceUrl`]]

chunk resourceUrl:

[[~[[+id]]]]

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

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sottwell Reply #5, 10 years ago

You might want to try it with pdoTools and either pdoResources or pdoMenu, as they are more efficient. For example, they don't check permissions unless you specifically tell them to. You can also cut down on the overhead by using an inline tpl, thus no need to load and parse a chunk.

&tpl=`@CODE [[~[[+id]]]]`

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5,888 Posts

Bruno17 Reply #6, 10 years ago

in this case I wouldn't use an inline tpl.

MODX would try to parse the makeUrl - tag and throw an error, if [[+id]] is empty.

And [[+id]] will be empty before getResources/pdoResources is running

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

you can buy me a beer, if you like MIGX

http://webcmsolutions.de/migx.html

Thanks!

5,888 Posts

Bruno17 Reply #7, 10 years ago

may be, this could work:

[[[[getResources? &parents=`XXX` &limit=`1` &sortby=`menuindex` &sortorder=`ASC` &tpl=`@INLINE ~[[+id]]`]]]]

[ed. note: Bruno17 last edited this post 10 years ago.]

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

you can buy me a beer, if you like MIGX

http://webcmsolutions.de/migx.html

Thanks!

☆ A M B ☆
24,524 Posts

sottwell Reply #8, 10 years ago

Ouch. That is pretty obvious. I think I'd better take a break. I have Cheetos, and this Charlie's Angel's movie...

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64 Posts

gemand Reply #9, 10 years ago

Hi Bruno

works perfectly!

We only had to add: &sortby=`{"menuindex":"ASC"}`
and delete: &sortorder=`ASC`

Thanks a lot!!!

24,544 Posts

BobRay Reply #10, 9 years, 11 months ago

Here's an improved version of the snippet above. It assumes that the first child is defined by menuindex and will return the URL of the child with the lowest menuindex. You can also send a &docId property to get the first child of another resource. If you leave that property out, the current resource is assumed. You can also set a &noResult property to set what will be returned if the resource has no children (defaults to an empty string).

<?php
/* FirstChildUrl Snippet */

/* Use current resource if no docId sent */
$docId = $modx->getOption('docId', $scriptProperties, $modx->resource->get('id'));

/* Set default noResult return */
$output = $modx->getOption('noResult', $scriptProperties, '');

$c = $modx->newQuery('modResource');
$c->sortby('menuindex', 'ASC');
$c->select(array('id','parent', 'menuindex'));

/* We only want one resource */
$c->limit(1);

/* Get first child of docId resource */
$c->where(array(
   'parent' => $docId,
));

$childObj = $modx->getCollection('modResource', $c);

if ($childObj) {
    $childId = $childObj->get('id');
    $output = $modx->makeUrl($childId, "", "", "full");
}

return $url;

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