# Setting null value without removing the field

**URL:** https://discuss.elastic.co/t/setting-null-value-without-removing-the-field/139963
**Category:** Logstash
**Created:** [July 13, 2018, 2:35pm UTC](https://discuss.elastic.co/t/setting-null-value-without-removing-the-field/139963 "2018-07-13T14:35:22Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![imaad](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/imaad/32/48628_2.png) [@imaad](https://discuss.elastic.co/u/imaad)
#### Post date: [July 13, 2018, 2:35pm UTC](https://discuss.elastic.co/t/setting-null-value-without-removing-the-field/139963/1 "2018-07-13T14:35:23Z")

</div>

Hello,  
I'm using a jms input to index data from queues, some fields contains  
two values ("2018-07-12T23:30:00.000+0000" and  
"2018-07-12T00:00:00.000+0000") that I have to replace with null value.  
The input message look like this : `[{"DATE1":"2018-07-13T10:00:00.000+0000","ID":"13","DATE_1":null,"REF":"REF0000056062","SUBSCRIPTION_SUBREF":"118259","REPORT":"INSTRUCTIONS"},{"DATE1":"2018-07-13T00:00:00.000+0000","ID":"13","DATE_1":null,"REF":"REF0000056062","SUBSCRIPTION_SUBREF":"118259","REPORT":"INSTRUCTIONS"},{"DATE1":"2018-07-13T23:00:00.000+0000","ID":"13","DATE_1":null,"REF":"REF0000056062","SUBSCRIPTION_SUBREF":"118259","REPORT":"INSTRUCTIONS"}]`

My goal is to get this result:

`[{"DATE1":"2018-07-13T10:00:00.000+0000","ID":"13","DATE_1":null,"REF":"REF0000056062","SUBSCRIPTION_SUBREF":"118259","REPORT":"INSTRUCTIONS"},{"DATE1":null,"ID":"13","DATE_1":null,"REF":"REF0000056062","SUBSCRIPTION_SUBREF":"118259","REPORT":"INSTRUCTIONS"},{"DATE1":null,"ID":"13","DATE_1":null,"REF":"REF0000056062","SUBSCRIPTION_SUBREF":"118259","REPORT":"INSTRUCTIONS"}]`

I have tried this code but it remove completely the field from the JSON :

```
 mutate {
add_field => {
"replace_date1" => "%{+YYYY-MM-dd}T23:30:00.000+0000"
"replace_date2" => "%{+YYYY-MM-dd}T00:00:00.000+0000"
}
}
if [DATE1] == [replace_date1] or [DATE1] == [replace_date2] {
ruby { code => 'event.set("DATE1", nil)' }
}

```

Result :

`[{"DATE1":"2018-07-13T10:00:00.000+0000","ID":"13","DATE_1":null,"REF":"REF0000056062","SUBSCRIPTION_SUBREF":"118259","REPORT":"INSTRUCTIONS"},{"ID":"13","DATE_1":null,"REF":"REF0000056062","SUBSCRIPTION_SUBREF":"118259","REPORT":"INSTRUCTIONS"},{"ID":"13","DATE_1":null,"REF":"REF0000056062","SUBSCRIPTION_SUBREF":"118259","REPORT":"INSTRUCTIONS"}]`

Thank you

---

<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 10, 2018, 2:35pm UTC](https://discuss.elastic.co/t/setting-null-value-without-removing-the-field/139963/2 "2018-08-10T14:35:28Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.