I built a view that includes a form_remote_tag that will take user input and dynamically generate a table list of requested items. The user can change the input to display different results.
The data is modeled similar to this
Item has a status (column) has a group (column) has many related other items (lookup table)
There are probably about 10 or more possible combinations of how the user could request to return back results. However, each combination may not return a result... So for instance, does GROUP A have an item in STATUS X where other_items exist? The user will need to hit each combination that will return results so that those items can be evaluated. But the problem is, the user shouldn't need to try every combination to find the ones with results.
So what I wanted to do was to display a table before the form that says...
Group Name Status Other Items How Many A Open True 5 A Open False 0 B Working False 2
A simple query returns all results Items.find(:all, :conditions => xyz). But i need to count how many items for each group that do and do not have other items. I dont want to have a bajillion queries to the database to count all the possible combinations. I guess my question boils down to how can I work with a hashed array to count these various combinations?
Sorry if this seems confusing.