Question

我有一个带有查询postgresql的ruby应用程序，我的param列表有问题。我有一些ID需要在数据库中搜索。

我得到的错误是关于字符串/整数param类型。如何为postgresql正确设置查询参数？

items.id IN ('91,147,149,150,152,140,160,121,125,161'))

您可以注意到错误显示的位置为if report_tags tolist = JSON.parse(report_tags).join(',').gsub(/"/, '').sub!(/^,/, '') scoped = scoped.joins("INNER JOIN taggings ON taggings.taggable_id = items.id INNER JOIN tags on taggings.tag_id = tags.id").where("items.id IN (?)", tolist) end

if report_tags
  tolist = JSON.parse(report_tags).reject { |e| e.to_s.empty? }
  scoped = scoped.
    joins("INNER JOIN taggings ON taggings.taggable_id = items.id INNER JOIN tags on taggings.tag_id = tags.id").
    where("tags.id IN (?)", tolist)
end

感谢Harald我只需要稍微更新它就可以完美了！

def softmax(x, axis=None):
    x = x - x.max(axis=axis, keepdims=True)
    y = np.exp(x)
    return y / y.sum(axis=axis, keepdims=True)

Answer 1

尝试

if report_tags
  tolist = JSON.parse(report_tags)
  scoped = scoped.
    joins("INNER JOIN taggings ON taggings.taggable_id = items.id INNER JOIN tags on taggings.tag_id = tags.id").
    where(id: tolist)
end

整数列表作为查询子句参数

1 个答案: