Ruby 根据属性查找并返回数组中的对象
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Ruby find and return objects in an array based on an attribute
提问by fardin
How can you iterate through an array of objects and return the entire object if a certain attribute is correct?
如果某个属性正确，如何遍历对象数组并返回整个对象？
I have the following in my rails app
我的 rails 应用程序中有以下内容
array_of_objects.each { |favor| favor.completed == false }
array_of_objects.each { |favor| favor.completed }
but for some reason these two return the same result! I have tried to replace eachwith collect, map, keep_ifas well as !favor.completedinstead of favor.completed == falseand none of them worked!
但出于某种原因，这两个返回相同的结果！我试图取代each有collect，map，keep_if以及!favor.completed，而不是favor.completed == false和他们没有工作！
Any help is highly appreciated!
任何帮助都非常感谢！
回答by Babar
array_of_objects.select { |favor| favor.completed == false }
Will return all the objects that's completed is false.
将返回所有完成的对象是假的。
You can also use find_allinstead of select.
您也可以使用find_all代替select。
回答by Wand Maker
For first case,
对于第一种情况，
array_of_objects.reject(&:completed)
For second case,
对于第二种情况，
array_of_objects.select(&:completed)
回答by Arup Rakshit
You need to use Enumerable#find_allto get the all matched objects.
您需要使用Enumerable#find_all来获取所有匹配的对象。
array_of_objects.find_all { |favor| favor.completed == false }
