如何从存储在ruby哈希中的数组中删除特定值
我在我的错误列表中得到以下信息:如何从存储在ruby哈希中的数组中删除特定值,ruby,arrays,hashset,Ruby,Arrays,Hashset,我在我的错误列表中得到以下信息: @error_messages = { :password=>["can't be blank", "Password is required."], :"addresses.firstname"=>["can't be blank","Firstname is required."], :"addresses.city"=>["
@error_messages = {
:password=>["can't be blank", "Password is required."],
:"addresses.firstname"=>["can't be blank","Firstname is required."],
:"addresses.city"=>["can't be blank", "city is required."]
}
在这里,我想从这个散列中删除“不能为空”值,这样我就可以得到我包含的验证错误消息
是否可以从上面的哈希列表中删除“不能为空”值,我将在结果中得到此值:
@error_messages = {
:password=>["Password is required."],
:"addresses.firstname"=>["Firstname is required."],
:"addresses.city"=>["city is required."]
}
如何从哈希列表中删除特定值(要删除特定值而不是完整的键、值对)。是,可能
@error_messages = {
:password=>["can't be blank", "Password is required."],
:"addresses.firstname"=>["can't be blank","Firstname is required."],
:"addresses.city"=>["can't be blank", "city is required."]
}
@error_messages.each do |_,v|
v.delete( "can't be blank" )
end
@error_messages
# => {:password=>["Password is required."],
# :"addresses.firstname"=>["Firstname is required."],
# :"addresses.city"=>["city is required."]}
是的,有可能
@error_messages = {
:password=>["can't be blank", "Password is required."],
:"addresses.firstname"=>["can't be blank","Firstname is required."],
:"addresses.city"=>["can't be blank", "city is required."]
}
@error_messages.each do |_,v|
v.delete( "can't be blank" )
end
@error_messages
# => {:password=>["Password is required."],
# :"addresses.firstname"=>["Firstname is required."],
# :"addresses.city"=>["city is required."]}