I came up with a little trick that I want to share, even though I'm sure there are better ways of doing this (perhaps someone will suggest them!)
OK, picture this: We have over half a dozen different types of workers -- Writers, Sr. Editors, Editors, etc. -- and we're going to pay them. So, in the database we have things like writer_payment, sr_editor_payment and editor_payment.
In the edit view, we have something like this (actually, there are many more cells, but I've omitted them for clarity):
And, I fully expect that we will be adding many more workers, so we can look forward to much cutting and pasting.
Well, I wanted to come up with a way of declaring an array, iterating through it and creating each row automagically.
My first thought was this:
But this doesn't work at all. The ActiveRecord attribute can't be built dynamically with string interpolation in the view. Similar efforts failed miserably.
But then I took at look at the ActiveRecord::Base class and noticed the attributes method. This got me a-thinkin' and here's what I came up with. Get the attributes from the ActiveRecord. Build a string with the array value and the "_payment", use straight array access to get the payment value
And, Holy Smakeral -- it works!