How to Iterate Through All Fields of a Repeater?

[bytesource]

Hi all,

I have been trying to get the fields of a given page, and that page can also contains repeaters - which have their own set of fields.

Retrieving all fields was relatively easy, but I am not sure how to iterate through the fields of a repeater. As the below code is meant to be expanded to more than just one page, I also don't know the names of the repeaters fields.

This is what I have come up with so far:

<?php

// bootstrap Processwire
include("./index.php");

$languagePage = wire('pages')->get("/");
$pageFields   = $languagePage->fields;
$russian      = wire('languages')->get("ru");

// iterate through all fields of a page
foreach ($pageFields as $field) {
    $type = $field->type;
    // only select a field if it is translatable
    if ($type == "FieldtypeTextLanguage" || $type == "FieldtypeTextareaLanguage") {

        $languagePage->setLanguageValue($russian, $field->name, "some dummy text");

    } elseif ($type == "FieldtypeRepeater") {
        
        // How to I itereate through all fields of a repeater?
        foreach($field->fields as $subfield) {
            $type = $subfield->type;

            if ($type == "FieldtypeTextLanguage" || $type == "FieldtypeTextareaLanguage") {

                $languagePage->setLanguageValue($russian, $subfield->name, "some dummy text");

        }

    }

}

$languagePage->save();

The problem is the code inside the elseif statement.

I am aware that a repeater can contain other repeaters, which calls for a recursive approach, but before I tackle this problem I wanted to be sure everything else is working.

Any suggestions are highly welcome!

Cheers,

Stefan

[Wanze]

Hi Stefan,

The repeater field is PageArray holding pages. I'm not sure if a repeater can contain another repeater, if it's possible this wouldn't be a good idea in my opinion

Extract your logic into a function that can be called recursive, this is just an example written in the browser, not tested:

function setLanguageValue(Page $p, $language) {
  
  $pageFields = $p->fields;
  
  // iterate through all fields of the given page
  foreach ($pageFields as $field) {
    $type = $field->type;
    // only select a field if it is translatable
    if ($type == "FieldtypeTextLanguage" || $type == "FieldtypeTextareaLanguage") {

        $p->setLanguageValue($language, $field->name, "some dummy text");

    } elseif ($type == "FieldtypeRepeater") {
        
        // Go recursive here
        $repeaterFieldName = $field->name;
        foreach ($p->$repeaterFieldName as $subpage) {
          setLanguageValue($subpage, $language);
        }

     }

  }
 
  $p->save();

}

// Execute it
$startPage = wire('pages')->get("/");
$russian = wire('languages')->get("ru");
setLanguageValue($startPage, $russian);

[bytesource]

@Wanze

Wow, this is much more than I expected! Thank you so much!

I will test your code thoroughly, hopefully over the weekend, and then come back to you.

Cheers,

Stefan

[bytesource]

@Wanze

I just wanted to let you know that the code you posted is working as expected. Besides, it seems  FieldtypePageTable also is a PageArray containing pages, so I added this one, too:

<?php

// bootstrap Processwire
include("./index.php");

echo "Translation starts now...";

function setLanguageValue (Page $p, $language) {

    $pageFields   = $p->fields;

    // iterate through all fields of a page
    foreach ($pageFields as $field) {
        $type = $field->type;
        // only select a field if it is translatable
        if ($type == "FieldtypeTextLanguage" || $type == "FieldtypeTextareaLanguage") {

            // only translate if the field value for the default language is not empty
            $defaultValue = $p->getLanguageValue(wire('languages')->get('default'), $field);
            if (!empty($defaultValue)) {

                $p->setLanguageValue($language, $field->name, "some dummy text");
            }

        }
        elseif ($type == "FieldtypeRepeater" || $type == "FieldtypePageTable") {
            
            $fieldName = $field->name;
            // Repeater and and PageTable fields are PageArrays holding pages.
            foreach($p->$fieldName as $subpage) {
                setLanguageValue($subpage, $language);
            }
        }
    }

    $p->save();
}

$p       = wire('pages')->get("/");
$russian = wire('languages')->get("ru");

setLanguageValue($p, $russian);

Thanks again for your help!

Cheers,

Stefan