You should refactor this out (along with the name in associations):
```ruby
def self.aspect_association_name
  "#{model_name.singular}_aspects"
end
def self.crop_association_name
   "#{model_name.singular}_crops"
end
```
And then call it below `class.crop_association_name` or in associations just `crop_association_name`.

The names of the methods can be changed, whatever you think sounds best.