After pulling some hair and digging a lot in FuelPHP core I finally discovered a litle hack that allows validation of input arrays and its re-population using FuelPHP Validation Class.
Here’s how I did it:
View simplified for the sake of the example:
<?php echo \Form::label("Price", "options[0][price]"); ?>
<?php echo \Form::input("options[0][price]", \Validation::instance()->input("options.0.price"); ?>
<?php echo \Form::label("Name", "options[0][name]"); ?>
<?php echo \Form::input("options[0][name]", \Validation::instance()->input("options.0.name"); ?>
<?php echo \Form::label("Price", "options[1][price]"); ?>
<?php echo \Form::input("options[1][price]", \Validation::instance()->input("options.1.price"); ?>
<?php echo \Form::label("Name", "options[1][name]"); ?>
<?php echo \Form::input("options[1][name]", \Validation::instance()->input("options.1.name"); ?>
Mind the options.0.name instead of options[0]name inside the Validation Input.
In my controller I did this:
$val = \Validation::factory();
if ( \Input::post("options") )
{
$form_options = \Input::post("options");
foreach ( $form_options as $form_id => $option )
{
$val->add("options.{$form_id}.price", "{$option["name"]} price")
->add_rule("required")
->add_rule("match_pattern", '/[0-9]*(\.|,)?[0-9]+/');
$val->add("options.{$form_id}.name", "{$option["name"]} name")
->add_rule("required");
}
}
And that’s it, this should validate the fields and repopulating them in case of errors. It’s a bit stupid that it only works like this.
FuelPHP should provide a friendlier way and a documented one to validate array input fields, it’s a common feature when dealing with dynamic built forms that have one-to-many objects in it.
Tested with FuelPHP 1.0.1