As noted in my previous post, I am in the middle of building a utility (for work, and for my next SQLBLOG post), that will help when you need to drop the foreign key constraints on a table, but then replace them without having to save off the script manually. In that post, I showed how to manually create a foreign key constraint in three possible states.
Next, in order to create the utility to script the FOREIGN KEY constraints before dropping them, I need a way to script the constraint. In this post I present a user defined function that will generate a script that does the scripting of a foreign key constraint. The code is largely based on some code from Aaron Bertrand in this blog (with his permission naturally!) with a few edits to script constraints as enabled, disabled or untrusted if the source constraint was in that condition (or you can force the constraints to a certain way if you so desire as well.)
This could be particularly useful for ETL jobs.