How to dynamically call variables defined in initializers in rails

Question

I want to dynamically call variables defined in initializers. I have a created a file(brands.rb) in my initializers and it have some variable defined init like,

FEATURED_FASHION_BRAND=["something", "something"]
FEATURED_DIY_BRAND=["something", "something"]

so can I call this variables dynamically, I meant, something like this,

@name= params[:name]
FEATURED_"#{@name}"_BRAND

BTW, a much nicer way to do this is to make a hash of values in your config. Then you can just say FEATURED_BRANDS[@name] or similar, instead of mucking about with dynamic variable names. — Max Williams
– Max Williams, Commented Sep 19, 2014 at 13:28
And, to go further, you should actually store this stuff in your database: it feels like it would go in a brands table, with a "featured" boolean field. — Max Williams
– Max Williams, Commented Sep 19, 2014 at 13:30

Fer · Accepted Answer · 2014-09-19 11:14:42Z

1

you can use constantize for that:

"FEATURED_#{@name}_BRAND".constantize

answered Sep 19, 2014 at 11:14

Fer

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1 Comment

Max Williams Over a year ago

Note that you can use constantize for all sorts of things, for example to turn a string into a class: my_model_name.constantize.find(123)

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