Modx Revo Count TV value and display summary of its values

74 Posts

random_noob Reply #1, 12 years, 3 months ago

I have a TV called engine_type which is a text box and it takes a string value. Using getresources as an example, how can I specify a parent, lets say 15, and the snippet check all of its children TV engine_type value, counts the total number of similiar string values and display it in the format below?

Engine Type

Type: 1000cc (5) //5 children resources has a value of 1000cc
Type: 1200cc (15) //15 children resources has a value of 1200cc
Type: 2000cc (7) //17 children resources has a value of 2000cc
Type: 2500cc (1) //1 child resource has a value of 2500cc
Type: 3000cc (3) //3 children resources has a value of 3000cc

I hope that my question is not too confusing.

This question has been answered by dashukin. See the first response.

24,544 Posts

BobRay Reply #2, 12 years, 3 months ago

That would take a custom snippet. Something like this (untested):

<?php
$doc = $modx->getObject('modResource', 15));
$values = array();
$output = '';

if ($doc) {

    $children = $doc->getMany('Children');
    foreach ($children as $child) {
      $tvValue = $child->getTVValue('engine_type');
      if (in_array($tvValue, array_keys($values))) {
          $values[$tvValue] = $values[$tvValue] + 1;
      } else {
          $values[$tvValue] = 1;
      }
    }
    foreach ($values as $key => $value) {
        $output .= '<br />Type: ' . $key . ' (' . $value . ')';
    }
}

return $output;

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74 Posts

random_noob Reply #3, 12 years, 3 months ago

Hey BobRay, I have tested the code and it works.

A few things however.

1) The snippet only grabs its immediate children (level 0). I understand the logic of your code

$children = $doc->getMany('Children');// First fetch all the children of the current resource

How can I grab ALL of the parent id children's children's children's etc?

I was thinking of doing a getresource call with another getresource call in the tpl. But after thinking it over, it would display the results like

Type: 1300cc (5)
Type: 1400cc (2)
Type: 1300cc (4)
Type: 1400cc (1)
etc...

To get an idea of my resource tree. The hidden resources has the engine_type TV.

24,544 Posts

BobRay Reply #4, 12 years, 3 months ago

That would involve a recursive function (that calls itself). This is probably wrong, but something like this:

<?php

function process ($children, &$values) {
    foreach ($children as $child) {
      $tvValue = $child->getTVValue('engine_type');
      if (in_array($tvValue, array_keys($values))) {
          $values[$tvValue] = $values[$tvValue] + 1;
      } else {
          $values[$tvValue] = 1;
      }
      $moreDocs = $child->getMany('Children');
      if (! empty($moreDocs)) {
          process($moreDocs);
      }
    }


}

$doc = $modx->getObject('modResource', 15));
$values = array();
$output = '';
 
if ($doc) {
    $children = $doc->getMany('Children');
    process($children, $values);

    foreach ($values as $key => $value) {
        if (!empty($key)) {
            $output .= '<br />Type: ' . $key . ' (' . $value . ')';
        }
    }
}
 
return $output;

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74 Posts

random_noob Reply #5, 12 years, 3 months ago

Thanks for your help so far. You was right again. The code doesn't work and again I understand its logic. This time I found it to be heavy on the server (due to the recursion) and it yields incorrect data.

I was looking again at the first snippet that you wrote.

$doc = $modx->getObject('modResource', 15));

Instead of using getObject, can it be getCollection?

My code most likely will be wrong

$parents = '216,215,408,499,214';
$doc = $modx->getCollection('modResource', $parents);
$values = array();
$output = '';
 
if ($doc) {
 
    $children = $doc->getMany('Children');
    foreach ($children as $child) {
      $tvValue = $child->getTVValue('engine_type');
      if (in_array($tvValue, array_keys($values))) {
          $values[$tvValue] = $values[$tvValue] + 1;
      } else {
          $values[$tvValue] = 1;
      }
    }
    foreach ($values as $key => $value) {
        $output .= '<br />Type: ' . $key . ' (' . $value . ')';
    }
}
 
return $output;

24,544 Posts

BobRay Reply #6, 12 years, 3 months ago

No, you can't do that, but you can do something like this:

[[SnippetName? &parentList=`216,215,408,499,214`]]

$parentList = $modx->getOption('parentList', $scriptProperties, '');

$parents = empty($parentList)? array() : explode(',', $parentList);
$values = array();
$output = '';

$c = $modx->newQuery('modResource');
$c->where(array('id:IN' => $parents));

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

if (! empty($docs)) {
  
    foreach($docs as $doc) {
        $children = $doc->getMany('Children');
        foreach ($children as $child) {
            $tvValue = $child->getTVValue('engine_type');
            if (in_array($tvValue, array_keys($values))) {
                $values[$tvValue] = $values[$tvValue] + 1;
            } else {
                $values[$tvValue] = 1;
            }
        }
        
    }
    natsort($values);
    foreach ($values as $key => $value) {
        $output .= '<br />Type: ' . $key . ' (' . $value . ')';
    }
}  
return $output;

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discuss.answer

2 Posts

dashukin Reply #7, 12 years, 3 months ago

Hi, random_noob! You could try this:

$engineTypeTVID = 100500; // your TV id
$carTemplateId = 78; // your car template id

$startParentId = 10;
$childrenIds = $modx->getChildIds($startParentId, 3, array('context' => 'web'));

$q = $modx->newQuery('modResource');
$q->leftJoin('modTemplateVarResource', 'eType', array('modResource.id = eType.contentid', 'eType.tmplvarid = ' . $engineTypeTVID ));
$q->select(array('count(modResource.id)', 'eType.value as eType'));
$q->where(array(
 'modResource.id:IN' => $childrenIds,
 'modResource.template' => $carTemplateId
));
$q->groupby('eType');
if ($q->prepare() && $q->stmt->execute()) {
 $rs = $q->stmt->fetchAll(PDO::FETCH_ASSOC);
 echo '<pre>';
 print_r($rs);
 echo '</pre>';
}

this should do the trick. [ed. note: dashukin last edited this post 12 years, 3 months ago.]

74 Posts

random_noob Reply #8, 12 years, 3 months ago

Thank you guys. Both of these snippets are awesome. I'm sorry for the late response as well. Got caught up developing another website.

Anyways, I will play around with these snippets and see what I can learn from them.

Cheers

24,544 Posts

BobRay Reply #9, 12 years, 3 months ago

dashukin's snippet would be significantly faster than mine.

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2 Posts

dashukin Reply #10, 12 years, 3 months ago

Quote from: BobRay at Jul 04, 2014, 02:59 PM

dashukin's snippet would be significantly faster than mine.

Hi, BobRay!
Most of the time we don't need full objects but only plain values from database. I think it's better to use such queries in these cases.
Cheers!

Answered Modx Revo Count TV value and display summary of its values