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I'm using the Charge API to get a customer's next invoice date in a template:

{exp:charge:api call="Stripe_Invoice::upcoming" param_name="customer" key="{customer_id}"}
{if has_error}
    {error_message}
{if:else}
    {data}
        {if '{next_payment_attempt}' != ''}
            Your plan will renew automatically on:
            {exp:low_nice_date date="{next_payment_attempt}" format="%n/%j/%Y"}.
        {/if}
    {/data}
{/if}
{/exp:charge:api}

This calls the api() function in the module, and I can clearly see where {data} is being set:

$data = ee()->charge_stripe->api_call($call_name, $call_val, $call_param_name);

if ($data === false) {
    $ret['has_error'] = true;
    $ret['error_message'] = ee()->charge_stripe->api_error_message;
} else {
    $ret['data'] = $data;
    $ret['has_error'] = false;
    $ret['error_message'] = '';
}

If I var_dump($data['next_payment_attempt']) there I get a timestamp, as expected. But in the template I get an error about Array to String conversion. I can manually add the line $ret['next_payment_attempt'] = $data['next_payment_attempt']; and then use {next_payment_attempt} in my template.

Why can't I use {data}{next_payment_attempt}{/data} in my template without modifying the PHP directly, when it's clear that $data['next_payment_attempt'] is a timestamp?

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Alas I don't know the add-on, but for a tag pair, it needs to be a numerical indexed array for the return variable, so $ret['data'] = $data would need to be $ret['data'] = array($data), so that the variable pair has something to loop through, so the output should be in this structure: $ret['data'][0]['next_payment_attempt'] - even if it only contains 1 set of data (1 loop).

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  • Sure enough, I edited the PHP to do $ret['data'] = array($data) and now everything works as expected Feb 23 '16 at 22:36

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