ruby Rails 3.2 遍历数组
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Rails 3.2 iterate through an array
提问by ctilley79
I have an array that looks like this:
我有一个看起来像这样的数组：
@shipment_products
[
{"old_qty_shipped"=>"324", "product_id"=>"1", "qty_shipped"=>"12443"}
{"old_qty_shipped"=>"4343423", "product_id"=>"3", "qty_shipped"=>"321344"}
{"old_qty_shipped"=>"23", "product_id"=>"4", "qty_shipped"=>"321"}
]
I want to end up being able to do something like this
我希望最终能够做这样的事情
@shipment_products.each do |p|
Product.adjust_qtys(p.old_qty_shipped, p.qty_shipped, p.product_id)
end
I'm getting the following error
我收到以下错误
NoMethodError (undefined method `qty_shipped' for #<ActiveSupport::HashWithIndifferentAccess:0x007f>)
The array is not quite in the right format to do this. I need to find a way to be able to iterate through the key/values and extract the attributes so I can call the method I created in the model. Any ideas?
该数组的格式不太适合执行此操作。我需要找到一种方法来遍历键/值并提取属性，以便我可以调用我在模型中创建的方法。有任何想法吗？
回答by Shamith c
Check following code.
检查以下代码。
@shipment_products = [ {"old_qty_shipped"=>"324", "product_id"=>"1", "qty_shipped"=>"12443"}, {"old_qty_shipped"=>"4343423", "product_id"=>"3", "qty_shipped"=>"321344"} , {"old_qty_shipped"=>"23", "product_id"=>"4", "qty_shipped"=>"321"}]
@shipment_products.each do |p|
Product.adjust_qtys(p['old_qty_shipped'], p['qty_shipped'], p['product_id'])
end
