I have 2 different content types "factory" and "measurement" that are related with an entity reference field. I am using a computed field to store the latest measurement as a field of the factory content type. The problem is that in order for the computed field to be "re-computed", the factory node that the measurement refers to, needs to be updated.
My first thought was to batch update all the factory nodes in predefined intervals. This has a very important downside: the factory information (and specifically the latest measurement that I'm interested in) will not be updated until the batch update is executed.
My next thought was that I could use a hook whenever a new measurement is created and update the corresponding (=the one that the entity reference points to) factory. The problem is that hook_node_insert will not give me the information that I want (i.e. the entity reference field that points to the factory) since in the hook's description it states clearly that:
You should not rely on data in the database at this time as it is not updated yet.
Is there any other way to execute a piece of code whenever a new node of specific type (i.e. measurement) is saved/created and have the node's fields available in my code? How do Rules do it?
P.S: I thought about using Rules but it seems like an overkill for such a simple thing to install a pretty heavy module.