What is the best approach for saving an attribute associated with an object that has not yet been created, using AJAX?

Currently, I am facing a situation where an object is not created yet and therefore lacks an ID. The user is in the process of entering data to create this object, including adding attributes that require the object's ID.

The problem arises because the object has not been fully created yet. When editing an existing object with an assigned ID, adding attributes is straightforward.

Consider this relational model:

OBJECT (name, id)
  ^ ATTRIBUTE (name, object_id, id)

How would you handle such scenarios effectively? One approach could be introducing an "is_temporary" field for the object to receive an immediate ID, but there may be other better solutions available.

javascriptmysqlajax

Answer №1

That's an excellent question! Here are two approaches you can take:

  • Adjust the "ATTRIBUTE" creation code to manage creation and preservation within the client-side form state.
  • Utilize the "is_temporary" field and regularly clean them up with a scheduled task.

The second option is simpler to execute, but it requires adding is_temporary='false' whenever accessing the objects, which may disrupt ID sequences if users cancel.

Your decision should be based on how challenging the ATTRIBUTE creation code is. If it's complex to keep it persistent in the form until the object is created (without an ID), then go with the second choice. Otherwise, opt for the first one.

Answer №2

It's important to differentiate between saving an object in a database and creating an object in JavaScript.

If you're saving the object to a database, one approach could be to pre-fetch the next ID from the database, but this can lead to issues like duplicates, especially with high traffic pages.

Consider saving the object, obtaining its ID, and then using it for attributes. To minimize server trips, delay handling IDs until submission and manage them server-side.

An example showcasing these concepts would provide better clarity :-)

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