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Storing Constant Date in Rails
What is the best way to store a set of constants like country names, currencies, city lists in a rails app?
I was thinking of having a model named Constants that stores all this data and another model ConstantMaps that is polymorphic that maps the constants to the various other models
Is this a right approach?
If you want them to be editable, then storing them in a model makes sense. You can easily add and update them.
Otherwise if you really want them to be true constants, you could set a constant in Ruby in a Rails initializer file like so:
# config/initializers/countries.rb COUNTRIES = [ "United States", "Canada", #... etc ]
And then you could reference the
COUNTRIES variables in your code in other places.
Also, if you don't need this as a global constant you can also do something similar in a helper. But from the sound of it, you'd want a global constant for this use case.