The question I guess I now need answered is why doesn't
Modell::saveAll validate HABTM data before saving it?
By digging into the core I found that Model::saveAll does not have a
switch case for hasAndBelongsToMany, but by my limited logical
reasoning that would mean the data would not get saved either, yet it
does.
I amended lines #1511 to #1525 to the following which results in my
HABTM model getting validated as required and my data is being saved
as expected, but I don't fully follow the code so there's a high
chance this is not a sensible solution:
if (isset($associations[$association])) {
switch ($associations[$association]) {
case 'belongsTo':
case 'hasAndBelongsToMany': // added
if ($this->__save($this->{$association}, $values, $options)) {
$data[$this->alias][$this->{$associations[$association]}
[$association]['foreignKey']] = $this->{$association}->id; // edited
} else {
$validationErrors[$association] = $this->{$association}-
>validationErrors;
$validates = false;
}
if (!$options['atomic']) {
$return[$association][] = $validates;
}
break;
}
}
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