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9 changes: 9 additions & 0 deletions Classes/Runtime/Domain/FormState.php
Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,15 @@ public function getPart(string $partName): ?array
return $this->parts[$partName] ?? null;
}

/**
* @param string $partName
* @return void
*/
public function removePart(string $partName): void
{
unset($this->parts[$partName]);
}

/**
* @return string[]
*/
Expand Down
23 changes: 18 additions & 5 deletions Classes/Runtime/FusionObjects/MultiStepProcessImplementation.php
Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,11 @@ class MultiStepProcessImplementation extends AbstractFusionObject implements Pro
*/
protected $targetSubProcessKey;

/**
* @var string
*/
protected $prevSubProcessKey;

/**
* Return reference to self during fusion evaluation
* @return $this
Expand Down Expand Up @@ -91,6 +96,13 @@ public function handle(ActionRequest $request, array $data = []): void
$this->currentSubProcessKey = (string)reset($subProcessKeys);
}

// select previous subprocess key
if (array_key_exists('__prev', $internalArguments)
&& $internalArguments['__prev']
) {
$this->prevSubProcessKey = (string)$internalArguments['__prev'];
}

// store target subprocess, but only if it already was submitted
if (array_key_exists('__target', $internalArguments)
&& $internalArguments['__target']
Expand All @@ -113,11 +125,12 @@ public function handle(ActionRequest $request, array $data = []): void
$this->currentSubProcessKey,
$currentSubProcess->getData()
);
} else {
if ($this->targetSubProcessKey) {
$request->setArgument('__submittedArguments', []);
$request->setArgument('__submittedArgumentValidationResults', new Result());
}
} elseif (
$this->state
&& $this->targetSubProcessKey !== $this->prevSubProcessKey
) {
$this->state->removePart($this->currentSubProcessKey);
$this->targetSubProcessKey = (string)$internalArguments['__current'];
}
}

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ prototype(Neos.Fusion.Form:Runtime.MultiStepProcess) {
hiddenFields = afx`
<Neos.Fusion.Form:Hidden field.name="__state" attributes.value={process.state} @if.has={process.state} />
<Neos.Fusion.Form:Hidden field.name="__current" attributes.value={process.current} @if.has={process.current} />
<Neos.Fusion.Form:Hidden field.name="__prev" attributes.value={process.prev} @if.has={process.prev} />
`

prototype(Neos.Fusion.Form:Runtime.SingleStepProcess) {
Expand Down