英文:
Get the enum value out from protobuf messages
问题
这是一个protobuf消息定义：
message People {
enum PeopleName {
Alice = 100;
Bob = 101;
Cathy = 102;
}
optional PeopleName name = 1;
}
我想根据我创建的一些字符串填充name字段。例如，在golang中：
str := "Cathy"
我该如何填充protobuf消息中的"name"字段？
英文:
Here is a protobuf message definition:
message People {
enum PeopleName {
Alice = 100;
Bob = 101;
Cathy = 102;
}
optional PeopleName name = 1;
}
I would like to populate the name field based on some strings I created. E.g. in golang:
str := "Cathy"
How can I populate the "name" in the protobuf message?
答案1
得分: 34
Go的protobuf生成器会生成一个枚举名称到值（以及相反）的映射。你可以使用这个映射将字符串转换为枚举值：
str := "Cathy"
value, ok := People_PeopleName_value[str]
if !ok {
panic("invalid enum value")
}
var people People
people.Name = People_PeopleName(value)
英文:
The Go protobuf generator emits a map of enum names to values (and vice versa). You can use this map to translate your string to enum value:
str := "Cathy"
value, ok := People_PeopleName_value[str]
if !ok {
panic("invalid enum value")
}
var people People
people.Name = People_PeopleName(value)
答案2
得分: 4
使用proto3，从枚举值到字符串，你可以直接使用：
name.String()
英文:
With proto3, from enum value to string, you can directly use:
name.String()
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