TYPO3 Exception 1255072832¶

Note

Below, the TYPO3 community may have provided additional information or solutions for this exception. However, these may or may not apply to your particular case. If you can provide more information, you should come back here and add your experience and solution steps to this issue once you have resolved it.

General TYPO3 troubleshooting tips can be found in the section "Troubleshooting" of the menu, and live support is available in the TYPO3 Slack channel #typo3-cms. (See How to get your TYPO3 Slack account.)

To add your experience, click "Edit on GitHub" above and follow the "Edit on GitHub" workflow. Also check out our tip on Coding Style and reST.

The form field "[items][][]" is invalid.¶

The form field "[items][][]" is invalid. Reason: "[]" used not as last argument, but somewhere in the middle (like foo[][bar]).

The value of "name" is missing in the form field.

For example at the selecting field:

<f:form.select '''name="paymentOptions"''' options="{payPal: 'PayPal International Services', visa: 'VISA Card'}" value="visa" />

The error also occurs having a Fluid template like

<f:for each="{collection}" as="item" key="key">
  <f:form.checkbox name="items[]"  value="{key}"  />
  <label for="item-{key}">{item.name}</label>
</f:for>

When you select a checkbox and submit the from, you will receive the error message.

Solution: Adding a counter/id in the brackets of the name attribute solves the problem:

<f:form.checkbox name="items[{key}]"  value="{key}"  />.

Since in the form.checkbox documentation the examples are given with empty brackets, I consider this a bug.1

Better solution (since TYPO3 7): Do not add yourself [] to the name of the checkbox. Simply add multiple="1" and Fluid will adds automatically the [] to all the checkbox of the group.

<f:for each="{collection}" as="item" key="key">
  <f:form.checkbox name="items" multiple="1"  value="{key}"  />
  <label for="item-{key}">{item.name}</label>
</f:for>