How can I compare and validate that the user has not chose one
language several times?
Each language is embedded in a languages form, which is embedded in
the main form.
Language has columns 'member_id' (which is unset) and 'language_id'.
I need to compare and validate 'language_id'.
$lang_forms = new sfForm();
foreach ($nv_member->getNvMemberLanguages() as $pos=>$lang) {
$lang_form = new NvMemberLanguageForm($lang);
unset($lang_form['member_id']);
$lang_forms->embedForm($pos, $lang_form);
}
$this->embedForm('languages', $lang_forms);
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