Referencing an Object's attributes

[MattyMoose]

Hi! Long time no post... (Hi jk!)

This is probably a really simple question, but I'm not familiar enough with PHP and how it works with objects.

I'm experimenting with a CMS called concrete5. It seems pretty cool.

Anyway, I'm calling a method within an object ("$c"), which returns what is effectively an array, but I'm not sure how ot specifically call the objects returned individually... Here's my code, and the output:

$surroundings = $c->getCollectionAttributeValue('trail_surroundings');
echo '<pre>' . print_r($surroundings) . '</pre>';

The print_r results in:

SelectAttributeTypeOptionList Object
(
[options:private] => Array
(
[0] => SelectAttributeTypeOption Object
(
[error] =>
[ID] => 1
[value] => Wooded
[displayOrder] => 0
)

[1] => SelectAttributeTypeOption Object
(
[error] =>
[ID] => 4
[value] => Rivers or Streams
[displayOrder] => 3
)

[2] => SelectAttributeTypeOption Object
(
[error] =>
[ID] => 5
[value] => Open Fields
[displayOrder] => 4
)

)

[error] =>
)

If I try to do something fancy like

echo $surroundings[0][ID]

, I get:

Fatal error: Cannot use object of type SelectAttributeTypeOptionList as array

.

Any hints? :)

[Sandro87]

I'm not sure but maybe "->" is the right sintax

[MattyMoose]

Ya, that didn't do it for me. I've had the bright idea of asking in the c5 forums as well, since I realized there's probably a function already built to do this!

Thanks for your help.

The question still stands, though, for my own learning/understanding - if I had this object, how would I reference the properties?

[penders]

In order to access the part you are after it looks like you would do something like:

echo $surroundings->options[0]['ID'];

BUT, the options property is declared private... [options:private]
So, it is not directly accessible from outside the object! You will need to call a method of the object in order to access this property - which might not exist, or return the value you are expecting - print_r() does not show methods, just object properties.

[astupidname]

A quick consult of the documentation [concrete5.xross-cube.com...] reveals the methods available within a SelectAttributeTypeOptionList Object, which is what $surroundings is. So it would appear you could do something like:

for ($i = 0, $len = $surroundings->count(); $i < $len; $i++) {
    $sato = $surroundings->get($i); //a SelectAttributeTypeOption Object (thus the s a t o)
    echo 'id = '.$sato->ID.', value = '.$sato->value.', displayOrder = '.$sato->displayOrder.'<br>';
}