Get value from a repeatable field and use it in a module

Question

I use the field type "repeatable" in a Joomla module I've created but I don't know how to get the values out of it and use it in the module's default.php to create the output.

My repeatable field:

                    <field name="mitarbeiter"
                    type="Repeatable"
                    icon="list"
                    description="Mitarbeiter eingeben"
                    label="Mitarbeiter eingeben"
                    <fields name="params">
                        <fieldset hidden="true" name="mitarbeiter_template_modal" repeat="true">

                        <field name="mitarbeitername"
                            label="Name"
                            size="30"
                            type="text" />

                        <field name="mitarbeiterfunktion"
                            label="Funktion"
                            size="30"
                            type="text" />

                        <field name="mitarbeitertelefonnummer"
                            label="Funktion"
                            size="30"
                            type="text" />

                        <field name="mitarbeiteremail"
                            label="Funktion"
                            size="30"
                            type="text" />

                        <field name="mitarbeiterbild"
                            label="Bild-URL"
                            size="30"
                            type="text" />

                        </fieldset>
                    </fields>
                </field>

Normally I get the value of a field in the mod_modulename.php:

$fieldvalue = $parameters->get('fieldname');

Answer 1

I was hoping someone would eventually ask this question on here. I wrote a function for my first usage of repeatable form fields and use it for every extension I make now.

Here is how you do it:

Firstly, get the json object for the parameter like so:

$mitarbeiter = $params->get('mitarbeiter');

Then decode the json object:

$json = json_decode($mitarbeiter, true);

Then can then group each set of fields by key, like so:

public function group_by_key($array) 
{
    $result = array();

    foreach ($array as $sub) 
    {
        foreach ($sub as $k => $v) 
        {
            $result[$k][] = $v;
        }
    }
    return $result;
}

$filtered_array = group_by_key($json);

And finally, you'll need to iterate though it using a foreach loop, like so:

foreach ($filtered_array as $index=>$value) 
{   
    echo $value[0] . '<br>';   // mitarbeitername
    echo $value[1] . '<br>';   // mitarbeiterfunktion
    echo $value[2] . '<br>';   // mitarbeitertelefonnummer
    echo $value[3] . '<br>';   // mitarbeiteremail
    echo $value[4] . '<br>';   // mitarbeiterbild
}

Hope this helps

Answer 2

The above answer from @Lodder is correct, but you will also need to wrap the function with

if (!function_exists('yourFunctionname')) {
    // ... proceed to declare your function
}

If you do not, you can only render this function once per page.

So altogether it should look like this:

$mitarbeiter = $params->get('mitarbeiter');
$json = json_decode($mitarbeiter, true);

if (!function_exists('group_by_key')) {
  public function group_by_key($array) 
  {
      $result = array();

      foreach ($array as $sub) 
      {
          foreach ($sub as $k => $v) 
          {
              $result[$k][] = $v;
          }
      }
      return $result;
  }
}
$filtered_array = group_by_key($json);

foreach ($filtered_array as $index=>$value) 
{   
    echo $value[0] . '<br>';   // mitarbeitername
    echo $value[1] . '<br>';   // mitarbeiterfunktion
    echo $value[2] . '<br>';   // mitarbeitertelefonnummer
    echo $value[3] . '<br>';   // mitarbeiteremail
    echo $value[4] . '<br>';   // mitarbeiterbild
}