```rb
[:red, 1.month, 10]
[:red, 1.year, 120]
[:blue, 1.month, 120]
[:blue, 1.year, 300]
Every possible attribute (name, interval, amount) has at least two objects that share a value
If you want to make it even shorter, you have a few options - it really just comes down to preference:
# Option 1. my personal favorite, follows structure of
# intervals and plans on a pricing page.
1.month => {red: 10, blue: 120},
1.year => {red: 120, blue: 300}
# Option 2. this is fine too
red: {1.month => 10, 1.year => 120},
blue: {1.month => 120, 1.year => 300}
# Option 3. possible and works, but hurts my brain, NOT recommended
10 => {red: 1.month},
120 => {red: 1.year, blue: 1.month},
300 => {blue: 1.year}
Just a note: if you try to create two plans with the same attributes, that would error because of ActiveRecord uniqueness validations (and DB constraints). No point in having multiple identical plans.