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8 September 2009 at 4:59pm
has anyone got any hints on writing to a many_many relationship? I'm just starting to understand dataobjects a little better and trying to build some forms... the wiki is awesome for info but I can't find anything on saving relationships.
The following is what I have in my head but not too sure how it all fits together
$myDataObject = new myDataObject;
$myDataObject->relationship = form data;
8 September 2009 at 5:40pm
a many_many is just a link between 2 dataobjects. Note you will need to write() both objects before you add it to the relationship as the ID of the object is created on write()
// MyDataObject has a many_many to MyOtherDataObject called 'Others'
$dataobject = new MyDataObject();
$other = new MyOtherDataObject();
// you should see a MyDataObject_Others table in your database with 1 entry
8 September 2009 at 5:57pm
Thanks for the fast reply willr!
That makes a little more sense. So I imagine I'll be able to add relationships to existing dataobjects by
$dataObject = DataObject::get('mydataobject');
$other = DataObject::get('another');
I'll give it ago. Thnks man.
20 December 2013 at 7:08am
Hi Will, you know when we add successully how to update it because the add function wont update when we change the existing value of the field
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