Class: Hash

Inherits:
Object show all
Defined in:
lib/rad/support/hacks_and_fixes.rb

Overview

Problem: the Hash::slice method in ActiveSupport works a little differently than in Facets. And because Facets is overrides ActiveSupport version this causes problems (for example in to_json method) In ActiveSupport it returns :nil if there’s no key in Facets it raises error.

Use Case: hash = “slug”=>“item-z8w”, “name”=>“Item”, “created_at”=>“2011-01-10T07:04:01Z”, “dependent”=>“false”, “viewers”=>[“manager”, “user:user1”], “updated_at”=>“2011-01-10T07:04:01Z”, :icon_url=>“null”, “text”=>“null”, “tags”=>[], “owner_name”=>“user1”, “_type”=>“Selector” args = [“id”, “_type”, “slug”, “name”, “text”, “tags”, “dependent”, “owner_name”, “viewers”, “created_at”, “updated_at”] hash.slice *args

Solution: Redefining :slice the same way as in ActiveSupport.

Direct Known Subclasses

Rad::AliasRouter::TreeHash

Instance Method Summary collapse

Instance Method Details

#slice(*keep_keys) ⇒ Object 



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# File 'lib/rad/support/hacks_and_fixes.rb', line 15

def slice(*keep_keys)
  hash = {}
  keep_keys.each do |key|      
    # hash[key] = fetch(key)
    hash[key] = self[key]
  end
  hash
end