# Logstash concatenar dos campos strig
**URL:** https://discuss.elastic.co/t/logstash-concatenar-dos-campos-strig/291657
**Category:** Elasticsearch
**Created:** [December 13, 2021, 1:38pm UTC](https://discuss.elastic.co/t/logstash-concatenar-dos-campos-strig/291657 "2021-12-13T13:38:01Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Javier\_Garcia\_Alvare](https://discuss.elastic.co/u/Javier_Garcia_Alvare)
#### Post date: [December 13, 2021, 1:38pm UTC](https://discuss.elastic.co/t/logstash-concatenar-dos-campos-strig/291657/1 "2021-12-13T13:38:01Z")
Hola,
Necesito concatenar dos campos tipo string en el fichero de logtash
¿alguien me puede ayudar?
es decir, los campos ya exiten del csv.
filter..
mutate {
add\_field =\> {"CANALITSOFT" =\> ""}
}
ruby{
code =\> "
event.set('CANALITSOFT' , (event.get('MEDIO')+event.get('SOFT'))
"
}
es correcto?
---
### Author:  [@leandrojmp](https://discuss.elastic.co/u/leandrojmp)
#### Post date: [December 13, 2021, 1:44pm UTC](https://discuss.elastic.co/t/logstash-concatenar-dos-campos-strig/291657/2 "2021-12-13T13:44:02Z")
No necesitas utilizar Ruby, puedes utilizar solo el filtro Mutate.
```auto
mutate {
add_field => { "CANALITSOFT" => "%{MEDIO}%{SOFT}"}
}
```
---
### Author:  [@Javier\_Garcia\_Alvare](https://discuss.elastic.co/u/Javier_Garcia_Alvare)
#### Post date: [December 13, 2021, 1:52pm UTC](https://discuss.elastic.co/t/logstash-concatenar-dos-campos-strig/291657/3 "2021-12-13T13:52:28Z")
Muchas gracias. Correcto ya me funciona.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 10, 2022, 1:53pm UTC](https://discuss.elastic.co/t/logstash-concatenar-dos-campos-strig/291657/4 "2022-01-10T13:53:14Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.