🎓 Ruby Hash method `delete_if`

Remove key, value pairs from a Hash given a condition.

Can be used to handle optional data from frontend filters.

user_options = {  
  theme: nil,  
  filters: [],  
  settings: :custom,  
  last_page: ""  
}  
  
user_options.delete_if { |_k, v| v.blank? }  
#=> {:settings=>:custom}  
  
class Options  
  include ActiveModel::Model  
  include ActiveModel::Attributes  
  
  attribute :theme, default: :dark  
  
  def initialize(attrs = {})  
    super(attrs.delete_if { |_k, v| v.blank? })  
  end  
end  
  
options_nil_theme = {  
  theme: nil  
}  
options = Options.new(options_nil_theme)  
puts options.theme  
#=> :dark  
  
options_theme = {  
  theme: :light  
}  
options = Options.new(options_theme)  
puts options.theme  
#=> :light