Class: Filternator::ApplyFilter

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/filternator/apply_filter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filterer, params) ⇒ ApplyFilter 



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# File 'lib/filternator/apply_filter.rb', line 9

def initialize(filterer, params)
  @filterer = filterer
  @params = params
end

Instance Attribute Details

#filterer ⇒ Object (readonly)

Returns the value of attribute filterer.



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# File 'lib/filternator/apply_filter.rb', line 7

def filterer
  @filterer
end

#params ⇒ Object (readonly)

Returns the value of attribute params.



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# File 'lib/filternator/apply_filter.rb', line 7

def params
  @params
end

Instance Method Details

#as_json(*args) ⇒ Object 



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# File 'lib/filternator/apply_filter.rb', line 16

def as_json(*args)
  {
    scope_name => presenters.as_json(*args),
    :meta => {
      :filters        => all_filters,
      :applied_filter => filter,
      :pagination     => pagination.as_json,
    },
  }
end

#count ⇒ Object 



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# File 'lib/filternator/apply_filter.rb', line 27

def count
  filtered_scope.count
end

#filter ⇒ Object 



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# File 'lib/filternator/apply_filter.rb', line 43

def filter
  params[:filter].presence || default_filter
end

#filtered_scope ⇒ Object 



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# File 'lib/filternator/apply_filter.rb', line 47

def filtered_scope
  if valid_filter?
    # ignore 'all' on relations
    if scope.is_a?(::ActiveRecord::Relation) && filter.to_s == "all"
      scope
    else
      scope.public_send(filter)
    end
  else
    scope
  end
end

#paginated_scope ⇒ Object 



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# File 'lib/filternator/apply_filter.rb', line 39

def paginated_scope
  filtered_scope.paginate(page: params[:page].presence, per_page: params[:per_page].presence)
end

#pagination ⇒ Object 



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# File 'lib/filternator/apply_filter.rb', line 35

def pagination
  Pagination.new(paginated_scope)
end

#presenters ⇒ Object 



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# File 'lib/filternator/apply_filter.rb', line 31

def presenters
  paginated_scope.map(&presenter)
end

#valid_filter? ⇒ Boolean 



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# File 'lib/filternator/apply_filter.rb', line 60

def valid_filter?
  filter.present? && all_filters.include?(filter)
end