module Spree::Core::ProductFilters

See specific filters below for concrete examples.

Public Class Methods

all_taxons() click to toggle source

Filtering by the list of all taxons

Similar idea as above, but we don't want the descendants' products, hence it uses one of the auto-generated scopes from Ransack.

idea: expand the format to allow nesting of labels?

# File lib/spree/core/product_filters.rb, line 183
def self.all_taxons
  taxons = Spree::Taxonomy.all.map { |t| [t.root] + t.root.descendants }.flatten
  {
    name: 'All taxons',
    scope: :taxons_id_equals_any,
    labels: taxons.sort_by(&:name).map { |t| [t.name, t.id] },
    conds: nil # not needed
  }
end
brand_filter() click to toggle source
# File lib/spree/core/product_filters.rb, line 104
def self.brand_filter
  brand_property = Spree::Property.find_by(name: 'brand')
  brands = brand_property ? Spree::ProductProperty.where(property_id: brand_property.id).pluck(:value).uniq.map(&:to_s) : []
  pp = Spree::ProductProperty.arel_table
  conds = Hash[*brands.map { |b| [b, pp[:value].eq(b)] }.flatten]
  {
    name: I18n.t('spree.taxonomy_brands_name'),
    scope: :brand_any,
    conds: conds,
    labels: brands.sort.map { |k| [k, k] }
  }
end
format_price(amount) click to toggle source
# File lib/spree/core/product_filters.rb, line 64
def self.format_price(amount)
  Spree::Money.new(amount)
end
price_filter() click to toggle source
# File lib/spree/core/product_filters.rb, line 68
def self.price_filter
  v = Spree::Price.arel_table
  conds = [[Spree.t(:under_price, price: format_price(10)), v[:amount].lteq(10)],
           ["#{format_price(10)} - #{format_price(15)}", v[:amount].between(10..15)],
           ["#{format_price(15)} - #{format_price(18)}", v[:amount].between(15..18)],
           ["#{format_price(18)} - #{format_price(20)}", v[:amount].between(18..20)],
           [Spree.t(:or_over_price, price: format_price(20)), v[:amount].gteq(20)]]
  {
    name: Spree.t(:price_range),
    scope: :price_range_any,
    conds: Hash[*conds.flatten],
    labels: conds.map { |k, _v| [k, k] }
  }
end
selective_brand_filter(taxon = nil) click to toggle source
# File lib/spree/core/product_filters.rb, line 140
def self.selective_brand_filter(taxon = nil)
  taxon ||= Spree::Taxonomy.first.root
  brand_property = Spree::Property.find_by(name: 'brand')
  scope = Spree::ProductProperty.where(property: brand_property).
          joins(product: :taxons).
          where("#{Spree::Taxon.table_name}.id" => [taxon] + taxon.descendants)
  brands = scope.pluck(:value).uniq
  {
    name: 'Applicable Brands',
    scope: :selective_brand_any,
    labels: brands.sort.map { |k| [k, k] }
  }
end
taxons_below(taxon) click to toggle source

Provide filtering on the immediate children of a taxon

This doesn't fit the pattern of the examples above, so there's a few changes. Firstly, it uses an existing scope which was not built for filtering - and so has no need of a conditions mapping, and secondly, it has a mapping of name to the argument type expected by the other scope.

This technique is useful for filtering on objects (by passing ids) or with a scope that can be used directly (eg. testing only ever on a single property).

This scope selects products in any of the active taxons or their children.

# File lib/spree/core/product_filters.rb, line 166
def self.taxons_below(taxon)
  return Spree::Core::ProductFilters.all_taxons if taxon.nil?

  {
    name: 'Taxons under ' + taxon.name,
    scope: :taxons_id_in_tree_any,
    labels: taxon.children.sort_by(&:position).map { |t| [t.name, t.id] },
    conds: nil
  }
end