Ruby on Rails 2在Hash中搜索字符串

时间:2011-05-26 14:49:41

标签: ruby-on-rails ruby search hash

我需要帮助......

我有这样的哈希:

@ingredients = Hash.new
@ingredients[1] = "Biscottes Mini(recondo)"
@ingredients[2] = "Abadejo"
@ingredients[3] = "Acelga"
@ingredients[4] = "Agua de Coco"
@ingredients[5] = "Ajo"
@ingredients[6] = "Almidón de Arroz"
@ingredients[7] = "Anillos Con Avena Integral cheerios (nestle)"
@ingredients[8] = "Apio"

当我写“scotte”时,我需要搜索那个哈希以找到“Biscottes Mini(recondo)”

一些帮助?

THK!

2 个答案:

答案 0 :(得分:2)

为什么在这里使用Hash而不是数组?你似乎没有使用除整数之外的其他键。

无论如何,这个解决方案适用于数组和哈希:

search_term = 'scotte'
# you could also use find_all instead of select
search_results = @ingredients.select { |key, val| val.include?(search_term) } 
puts search_results.inspect

请参阅http://ruby-doc.org/core/classes/Enumerable.html#M001488

答案 1 :(得分:1)

您可以在哈希上调用select(或find,如果您只想要第一个匹配项),然后传入一个块,该块评估是否在结果哈希中包含键/值。该块将键和值作为参数传递,因此您可以评估键或值是否匹配。

search_value = "scotte"
@ingredients.select { |key, value| value.include? search_value }