Question

所以我之前已经问过这个问题，但即使问题得到解答，答案也没有发布，而且由于我没有足够的分数来评论答案，我需要再次提问。这是原帖

Is there a scope to allow me to show only products with variants with stock?

这适用于狂欢3.0。当我添加显示的代码

joins(
  variants_including_master: :stock_items
).group('spree_products.id').having("SUM(count_on_hand) > 0")

像我这样的产品装饰

def self.available(available_on = nil, currency = nil)
    # joins(:master => :prices).where("#{Product.quoted_table_name}.available_on <= ?", available_on || Time.now)      
    joins(:master => :prices).where("#{Product.quoted_table_name}.available_on <= ?", available_on || Time.now).joins(variants_including_master: :stock_items).group('spree_products.id').having("SUM(count_on_hand) > 0")  
end
search_scopes << :available

这打破了视图，因为据我所知，由于GROUP BY，结果有一些奇怪的属性。这个错误出现在<_ p>行的products_helper.rb文件中

  max_updated_at = (@products.maximum(:updated_at) || Date.today).to_s(:number)

因为@ products.maximum（：updated_at）返回哈希

{[6, 6]=>2015-07-04 19:08:36 UTC, [3, 3]=>2015-07-04 19:07:37 UTC, [10, 10]=>2015-07-07 19:01:12 UTC}

而不是返回日期

2015-07-07 19:01:12 UTC

它正常。

此代码也会在分类页面上爆炸，并出现以下错误：

PG :: GroupingError：ERROR：column＆＃34; spree_products_taxons.position＆＃34;必须出现在GROUP BY子句中或用于聚合函数第1行：选择DISTINCT＆＃34; spree_products＆＃34;。＆＃34; id＆＃34;，spree_products_taxon ... ^

：SELECT DISTINCT＆＃34; spree_products＆＃34;。＆＃34; id＆＃34;，spree_products_taxons.position AS alias_0 FROM＆＃34; spree_products＆＃34; INNER JOIN＆＃34; spree_variants＆＃34; ON＆＃34; spree_variants＆＃34;。＆＃34; product_id＆＃34; =＆＃34; spree_products＆＃34;。＆＃34; id＆＃34; AND＆＃34; spree_variants＆＃34;。＆＃34; is_master＆＃34; =＆＃39; t＆＃39; AND＆＃34; spree_variants＆＃34;。＆＃34; deleted_at＆＃34; IS NULL INNER JOIN＆＃34; spree_prices＆＃34; ON＆＃34; spree_prices＆＃34;。＆＃34; variant_id＆＃34; =＆＃34; spree_variants＆＃34;。＆＃34; id＆＃34; AND＆＃34; spree_prices＆＃34;。＆＃34; deleted_at＆＃34; IS NULL INNER JOIN＆＃34; spree_variants＆＃34; ＆＃34; variants_including_masters_spree_products＆＃34; ON＆＃34; variants_including_masters_spree_products＆＃34;。＆＃34; product_id＆＃34; =＆＃34; spree_products＆＃34;。＆＃34; id＆＃34; AND＆＃34; variants_including_masters_spree_products＆＃34;。＆＃34; deleted_at＆＃34; IS NULL INNER JOIN＆＃34; spree_stock_items＆＃34; ON＆＃34; spree_stock_items＆＃34;。＆＃34; variant_id＆＃34; =＆＃34; variants_including_masters_spree_products＆＃34;。＆＃34; id＆＃34; AND＆＃34; spree_stock_items＆＃34;。＆＃34; deleted_at＆＃34; IS NULL LEFT OUTER JOIN＆＃34; spree_products_taxons＆＃34; ON＆＃34; spree_products_taxons＆＃34;。＆＃34; product_id＆＃34; =＆＃34; spree_products＆＃34;。＆＃34; id＆＃34;在哪里＆＃34; spree_products＆＃34;。＆＃34; deleted_at＆＃34; IS NULL和（＆＃34; spree_products＆＃34; .deleted_at IS NULL或＆＃34; spree_products＆＃34; .deleted_at＆gt; =＆＃39; 2015-07-09 14：30：53.668422＆＃39;）AND （＆＃34; spree_products＆＃34; .available_on＆lt; =＆＃39; 2015-07-09 14：30：53.669089＆＃39;）和＆＃34; spree_products_taxons＆＃34;。＆＃34; taxon_id＆＃34 ; IN（2,7,14）AND（spree_prices.amount IS NOT NULL）和＆＃34; spree_prices＆＃34;。＆＃34;货币＆＃34; =＆＃39; USD＆＃39; GROUP BY spree_products.id具有SUM（count_on_hand）＆gt; 0 ORDER BY spree_products_taxons.position ASC LIMIT 12 OFFSET 0

所以必须有一个更好的方法来做到这一点，以便GROUP by子句不会抛弃所有东西。

Answer 1

尝试这样的事情：

  joins(:master => :prices, variants: :stock_items).where("#{StockItem.quoted_table_name}.count_on_hand > 0 AND #{Product.quoted_table_name}.available_on <= ?", available_on || Time.now).uniq

您可能也希望包含backorderable和track_inventory - 我不知道您的设置，也许您根本没有这样的变体。

修改：已添加uniq。如果您还想要主变体，那么只需将variants: :stock_items部分更改为variants_including_master: :stock_items。

spree 3.0仅显示有库存的产品

1 个答案: