Class: Reporter::Scope::ReferenceScope

Inherits:
Base
  • Object
show all
Defined in:
lib/reporter/scope/reference_scope.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(scoping, name, data_source, *args) ⇒ ReferenceScope

Returns a new instance of ReferenceScope.



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# File 'lib/reporter/scope/reference_scope.rb', line 3

def initialize scoping, name, data_source, *args
  mappings = args.extract_options!
  mappings = create_mappings_for_object_type(data_source, args.first, mappings) if args.first
  super scoping, data_source, name, mappings
  @limiter = nil
  @id_collection = nil
end

Class Method Details

.possible_scopes(sources) ⇒ Object 



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# File 'lib/reporter/scope/reference_scope.rb', line 61

def self.possible_scopes sources
  results = []
  # check reflections
  reflection_references = nil
  sources.each do |source|
    relations = source.relations_to_objects
    relation_pool = relations.keys + [source.active_record]
    reflection_references = reflection_references ? (reflection_references & relation_pool) : relation_pool
  end
  (reflection_references || []).each do |reflection_object|
    result_hash = { :type => :reference, :match => :loose, :object => reflection_object }
    sources.each do |source|
      fields = []
      fields << "id" if (source.active_record == reflection_object)
      fields += source.relations_to_objects[reflection_object] || []
      result_hash[source.model_name] = fields
    end
    results << result_hash
  end
  #Rails.logger.info reflection_references.inspect

  results
end

Instance Method Details

#apply_on(source) ⇒ Object 



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# File 'lib/reporter/scope/reference_scope.rb', line 33

def apply_on source
  raise "No mapped column for source #{source}" unless mappings.has_key? source.name
  reference = mappings[source.name]

  limiter = group_object || @limiter
  if limiter
    q, values = limit_through_association source, reference, limiter
    source.where(q, values)
  else
    source
  end
end

#change(object) ⇒ Object 



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# File 'lib/reporter/scope/reference_scope.rb', line 23

def change object
  scoping.serialize_scope name, item
end

#group_object ⇒ Object 



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# File 'lib/reporter/scope/reference_scope.rb', line 15

def group_object
  scoping.unserialize_scope(name)
end

#human_name ⇒ Object 



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# File 'lib/reporter/scope/reference_scope.rb', line 27

def human_name
  limiter = group_object || @limiter
  return limiter.collect { |item| human_name_for item }.to_sentence if limiter.is_a? Enumerable
  human_name_for limiter
end

#iterate(items, data_set, &block) ⇒ Object 



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# File 'lib/reporter/scope/reference_scope.rb', line 46

def iterate items, data_set, &block
  items ||= @limiter
  if items.is_a? Enumerable
    items.each do |item|
      scoping.serialize_scope name, item
      yield data_set.get_row
    end
    scoping.serialize_scope name, nil
  else
    scoping.serialize_scope name, items
    yield data_set.get_row
    scoping.serialize_scope name, nil
  end
end

#limit=(object_or_array) ⇒ Object 



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# File 'lib/reporter/scope/reference_scope.rb', line 11

def limit= object_or_array
  @limiter = object_or_array
end

#value ⇒ Object 



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# File 'lib/reporter/scope/reference_scope.rb', line 19

def value
  group_object || @limiter
end