Class: TaggableCache::Store::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/taggable_cache/store/base.rb

Direct Known Subclasses

Redis

Instance Method Summary collapse

Constructor Details

#initialize(attrs = {}) ⇒ Base

:nodoc:

Raises:

  • (ActionController::NotImplemented) 


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# File 'lib/taggable_cache/store/base.rb', line 45

def initialize(attrs = {})
  raise ActionController::NotImplemented.new      
end

Instance Method Details

#add(tag, *members) ⇒ Object

:nodoc:

Raises:

  • (ActionController::NotImplemented) 


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# File 'lib/taggable_cache/store/base.rb', line 50

def add(tag, *members)
  raise ActionController::NotImplemented.new
end

#get(*members) ⇒ Object

:nodoc:

Raises:

  • (ActionController::NotImplemented) 


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# File 'lib/taggable_cache/store/base.rb', line 55

def get(*members)
  raise ActionController::NotImplemented.new
end

#id_for(obj) ⇒ Object

Returns taggable cache unique id for object



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# File 'lib/taggable_cache/store/base.rb', line 4

def id_for(obj)
  if obj.is_a? Class
    obj.to_s.downcase
  elsif obj.is_a? ActiveRecord::Base
    if obj.persisted?
      "#{obj.class.to_s.downcase}-#{obj.id}" 
    else
      id_for(obj.class)
    end
  elsif obj.is_a? Arel::SelectManager
    "query-keys-#{Digest::MD5.hexdigest(obj.to_sql)}"
  elsif obj.is_a? ActiveRecord::Relation
    id_for(obj.arel)
  elsif obj.is_a? String
    "string_#{obj.to_s}"
  elsif obj.is_a? Hash
    if obj.include?(:cls) && obj.include?(:id)
      "#{obj[:cls].to_s.downcase}-#{obj[:id]}"
    else
      nil
    end
  else
    nil
  end
end

#in_scope?(scope, object) ⇒ Boolean

Checks if object is in given scope

Returns:

  • (Boolean) 


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# File 'lib/taggable_cache/store/base.rb', line 36

def in_scope?(scope, object)
  return false unless object.persisted?

  query = scope.where(scope.froms.first[:id].eq(object.id)).to_sql

  object.class.connection.select_all(query).length > 0
end

#is_scope?(scope) ⇒ Boolean

Checks if this is AR scope

Returns:

  • (Boolean) 


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# File 'lib/taggable_cache/store/base.rb', line 31

def is_scope?(scope)
  (scope.is_a? ActiveRecord::Relation) || (scope.is_a? Arel::SelectManager)
end