我试图在通过每个循环迭代时将散列添加到数组。这里是我的控制器代码:我与挣扎的线路设置@royaltiesbychannel变量在每次循环:将散列推入循环中的数组中
def royalty(isbn)
sales_hash_by_channel = Sale.find_all_by_isbn_id(@isbn).group_by(&:channel_id)
sales_hash_by_channel.each do |ch_id, sale_array|
@royaltiesbychannel = Array.new()
value_total_by_channel = sale_array.sum(&:value)
quantity_total_by_channel = sale_array.sum(&:quantity)
@isbn.rules.each do |rule|
next unless rule.channel_id == ch_id
case quantity_total_by_channel
when 0..5000
@royaltiesbychannel = @royaltiesbychannel << {ch_id => value_total_by_channel * 0.5}
# (some other case-when statements)
end
end
end
在控制台中,当我设置ch_id和价值,新的东西,推新值入阵:
@royaltiesbychannel = @royaltiesbychannel << {ch_id => value_total_by_channel * 0.5}
我得到散列的很好的数组:
[{1=>100000.0}, {2=>3000.0}]
然而,当我在视图中做@ royaltiesbychannel.inspect,我得到的只是一个键 - 值对:
[{2=>3000.0}]
对于裁判:
@royaltiesbychannel.class = Array
@royaltiesbychannel.class = 1
@sales_hash_by_channel.class = Hash
@sales_hash_by_channel.size = 2
@isbn.rules.size = 4
所以它看起来像推入阵列覆盖,而不是增加。我究竟做错了什么?我完全错过了循环和.push的工作原理吗?提前谢谢了。
首先,你应该把所有的逻辑放在你的模型中:) – corroded 2011-05-25 11:28:18
所以如此。我想知道让事情先工作然后重构... – snowangel 2011-05-25 11:30:25
@royaltiesbychannel = @royaltiesbychannel << {ch_id => value_total_by_channel * 0.5}你为什么要将渠道的版税等同于自己?你可以不使用=符号,这可能是你覆盖了 – corroded 2011-05-25 11:32:04