Tips for Data Model

rubyonrails-talk
1

I can't quite seem to get the data model down for a fairly simple set of data.

The data is:

Framework --> Strand --> Level --> Benchmark

It would be simple enough if there were only three levels but since there are four I can't use straight has_many xyz :through clause.

The end goal is to have users be able to select a framework, then a strand, then a level, then a benchmark.

Any help would be appreciated.

2

I’m not sure I understand why the number of levels (3, 4, or 104) is an issue. So, perhaps I’m not understanding your question. But why not:

class Framework < ActiveRecord::Base has_many :strands, :dependent => :destroy end

class Strand < ActiveRecord::Base belongs_to :framework has_many :levels, :dependent => :destroy end

class Level < ActiveRecord::Base belongs_to :strand has_many :benchmarks, :dependent => :destroy end

class Benchmark < ActiveRecord::Base belongs_to :level end

–wpd