How can you iterate through an array of objects and return the entire object if a certain attribute is correct?
如果某个属性是正确的，如何遍历对象数组并返回整个对象?
I have the following in my rails app
我在rails应用程序中有如下内容
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 each with collect, map, keep_if as well as !favor.completed instead of favor.completed == false and none of them worked!
但是出于某种原因，这两个函数会返回相同的结果!我试着用collect、map、keep_if以及!favor.complete来替换它们，而不是帮助。完成== false，没有一个工作!
Any help is highly appreciated!
非常感谢您的帮助!
3 个解决方案
#1
14
array_of_objects.select { |favor| favor.completed == false }
Will return all the objects that's completed is false.
将返回已完成的所有对象为false。
You can also use find_all instead of select.
您还可以使用find_all而不是select。
#2
10
For first case,
对于第一种情况,
array_of_objects.reject(&:completed)
For second case,
第二个案例,
array_of_objects.select(&:completed)
#3
1
You need to use Enumerable#find_all to 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 }
#1
14
array_of_objects.select { |favor| favor.completed == false }
Will return all the objects that's completed is false.
将返回已完成的所有对象为false。
You can also use find_all instead of select.
您还可以使用find_all而不是select。
#2
10
For first case,
对于第一种情况,
array_of_objects.reject(&:completed)
For second case,
第二个案例,
array_of_objects.select(&:completed)
#3
1
You need to use Enumerable#find_all to 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 }