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Data Model Questions /

update just one field of a DataObject


2 Posts   1248 Views


Community Member, 110 Posts

19 March 2011 at 4:09am


I have a form where a Breeder can add a Dog to the Database. In the form there is a Dropdownfield where they can choose an other dog that would be the kid of the new dog. Like Newdog is FatherOf....

Now i've come a long way ( in my opinion) but i have no idea how to update just one field in a record.

         $dogStep = $this->getSavedStepByClass('DogDetailStep');
         // Create the new Dog      
               $dog = new Dog();
               $dog->BreederID    = $dog->BreederID;
         // New Dog is in Database
         // I need the ID of the just created Dog
               $thisdog = $dog->PedigreeName;
               $newDog = DataObject::get_one('Dog', "PedigreeName = '$thisdog'");
               $assignkidID = $dog->FatherOfID;
         //FatherOfID is a field from the form where i choose which Dog is the kid.
               $kid = DataObject::get_one('Dog', "ID = '$assignkidID'");
         //So now i have the kid that i choose in the form.

         //Now i have to fill the field $kid->MyFatherID with $newDog->ID

And that is where i'm lost. I've tryed


but then it overwrites the whole dog with the new one, so i need to update just that one field MyFatherID.


Community Member, 110 Posts

19 March 2011 at 4:32am

Stupid me :(

I have to set the field first, and then it doesn't mather that it writes everything back, it's the same dog........duh

$kid->MyFatherID = $newDog->ID;