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→Link between Business objects: updated for Dolibarr 3.1 & higher
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This is a portion of code that shows how you can do this:+
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= Link between Business objects =
= Link between Business objects =
Some business objects are linked to other business objects. This is done in Dolibarr using the [[Table llx_element_element]]. But you don't have to read this table to get objects linked to another.
Some business objects are linked to other business objects. This is done in Dolibarr using the [[Table llx_element_element]]. But you don't have to read this table to get objects linked to another.
−Here is how you can use this (Dolibarr 3.1 and higher):
+<source lang="php">
+// get invoices from an already loaded order:
+$result = $order->fetchObjectLinked($order->id, 'commande', null, 'facture');
+if ($result <= 0) {
+ // handle error
+}
+// important notice : the newly populated arrays are associative. Keys are llx_element_element row ids.
+// now if we expect only one linked invoice:
+// WRONG way to get it ($invoice_id will be NULL):
+$invoice_id = $order->linkedObjectsIds['facture'][0]
+// CORRECT way ($invoice_id will hold the ID):
+$invoice_id = array_values($order->linkedObjectsIds['facture'])[0]
+// Better (if there are more than one linked invoices) :
+foreach ($order->linkedObjectsIds['facture'] as $element_element_id => $facture_id) {
+ // process it
+}
+</source>
+Prior to Dolibarr < 3.1:
<source lang="php">
<source lang="php">
// This load the array linked_object with objects that link to this one
// This load the array linked_object with objects that link to this one