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If you have ever tried to deal with multiple primary keys in cakePHP then you have probably hit a brick wall at some stage. Although you still need to add a single id field, this example will allow you to save your data without needing to know the id.

In this quick snippet of code I will be setting the ID of a model based on other fields given. We want to save a note about each Post that is different for every Client, however we do not want to have to get the ID every time we save the data.