# proto-go-setter
Add setters for generated message fields. Supports scalar values (string, int32, etc) and maps
with primitive types for both key and value.
This is an often-requested feature for protoc-gen-go that won't be added to the core generator. See:
* https://github.com/golang/protobuf/issues/65
* https://github.com/golang/protobuf/issues/664
## Example
The simplest option is to just generate a setter for a single field.
```proto
syntax = "proto3";
import "github.com/confluentinc/proto-go-setter/setter.proto";
message Person {
string id = 1;
string name = 2 [(setter.include)=true];
}
```
Alternatively, you may want to generate setters for all fields in a message, or
all fields _except_ a single field.
```proto
syntax = "proto3";
import "github.com/confluentinc/proto-go-setter/setter.proto";
message Person {
option (setter.all_fields) = true;
string id = 1 [(setter.exclude)=true];
string name = 2;
}
```
Lastly, you may want to generate setters for everything in a file.
```proto
syntax = "proto3";
import "github.com/confluentinc/proto-go-setter/setter.proto";
option (setter.all_messages) = true;
message Person {
string id = 1 [(setter.exclude)=true];
string name = 2;
}
```
You'd generate the setters code by running
```bash
$ protoc --setter_out=. person.proto
```
All three examples above would result in `person_setter.go` containing
```go
func (t *Person) SetName(name string) {
t.Name = name
}
```
## LICENSE
MIT
---
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