# Mappings.\_default\_.dynamic\_templates doesn't show up in resulting mapping
**URL:** https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030
**Category:** Elasticsearch
**Created:** [August 26, 2016, 11:12am UTC](https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030 "2016-08-26T11:12:12Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@Carsten\_Germer](https://discuss.elastic.co/u/Carsten_Germer)
#### Post date: [August 26, 2016, 11:12am UTC](https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030/1 "2016-08-26T11:12:12Z")
Hi everyone,
Using ES 2.3 I create an index with default dynamic templates, just like in the examples.
```
PUT /myindex
{
"mappings": {
"_default_": {
"dynamic_templates": [
{
"no_date_detection": {
"match_mapping_type": "string",
"mapping": {
"type": "string",
"date_detection": false
}
}
}
]
}
}
}
```
Then I create a new type and object by
```
PUT /myindex/gardeners/1
{
"name": "Oscar"
}
```
When I GET the \_mapping afterwards it shows that the default mapping is handed down to the type "gardeners" but `"date_detection": false` does not show up in the mapping of the new field "name".
```
{
"myindex": {
"mappings": {
"_default_": {
"dynamic_templates": [
{
"no_date_detection": {
"mapping": {
"type": "string",
"date_detection": false
},
"match_mapping_type": "string"
}
}
]
},
"gardeners": {
"dynamic_templates": [
{
"no_date_detection": {
"mapping": {
"type": "string",
"date_detection": false
},
"match_mapping_type": "string"
}
}
],
"properties": {
"name": {
"type": "string"
}
}
}
}
}
}
```
Shouldn't the properties for the field "name" be
```
"properties": {
"name": {
"type": "string",
"date_detection": false
}
}
```
?
Is this expected behaviour? And if, how can I verify the mapping got applied to the field?
Thanks in advance and cheers /Carsten
Edit: Fixed preformatted
---
### Author:  [@ywelsch](https://discuss.elastic.co/u/ywelsch)
#### Post date: [August 26, 2016, 11:38am UTC](https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030/2 "2016-08-26T11:38:37Z")
yes, this is expected behavior. Once the String type is determined for the `name` field, there is no need for `date_detection` on that level. The `date_detection` is only relevant when ES encounters a new String field (see [here](https://www.elastic.co/guide/en/elasticsearch/guide/current/custom-dynamic-mapping.html#date-detection)).
If you want to test that the templates get properly applied to the field, try indexing a new document with a different field where you put a date as string value.
---
### Author:  [@Carsten\_Germer](https://discuss.elastic.co/u/Carsten_Germer)
#### Post date: [August 26, 2016, 12:09pm UTC](https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030/3 "2016-08-26T12:09:12Z")
Understood. But when, after deleting the index and creating it again, I put in
```
PUT /myindex/gardeners/1
{
"name": "2009-11-15T14:12:12"
}
```
GET \_mapping shows
```
"properties": {
"name": {
"type": "date",
"format": "strict_date_optional_time||epoch_millis"
}
}
```
So, the dynamic template didn't get applied. I can't find the error in that minimalistic code I more or less copied from the documentation. I think I remember that, when I first tried ES, it actually did work.
---
### Author:  [@ywelsch](https://discuss.elastic.co/u/ywelsch)
#### Post date: [August 26, 2016, 12:38pm UTC](https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030/4 "2016-08-26T12:38:48Z")
ok, I think that dynamic\_templates don't allow you to specify the `date_detection`.
You have to specify the `date_detection` directly on the mapping (not at the level of a specific type), i.e. do
```auto
PUT /myindex
{
"mappings": {
"gardeners": {
"date_detection": false
}
}
}
```
before indexing the first document.
If you want this to get automatically added to new indices, you can use index templates.
---
### Author:  [@Carsten\_Germer](https://discuss.elastic.co/u/Carsten_Germer)
#### Post date: [August 26, 2016, 12:56pm UTC](https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030/5 "2016-08-26T12:56:48Z")
Thanks Yannick, that is the case.
Now that I know what I'm looking for I also find that in the documentation [https://www.elastic.co/guide/en/elasticsearch/guide/current/custom-dynamic-mapping.html](https://www.elastic.co/guide/en/elasticsearch/guide/current/custom-dynamic-mapping.html)
Well, I'll be off checking and fixing like 20 models 😉
Looks like
```
PUT /myindex
{
"mappings": {
"_default_": {
"date_detection": false
}
}
}
```
achieves what I need.
---
### Author:  [@ywelsch](https://discuss.elastic.co/u/ywelsch)
#### Post date: [August 27, 2016, 1:58pm UTC](https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030/6 "2016-08-27T13:58:33Z")
> [@Carsten\_Germer](#):
>
> ```auto
> PUT /myindex
> {
> "mappings": {
> "_default_": {
> "dynamic_templates": [
> {
> "no_date_detection": {
> "match_mapping_type": "string",
> "mapping": {
> "type": "string",
> "date_detection": false
> }
> }
> }
> ]
> }
> }
> }
>
> ```
Just one thing I wanted to add here for sake of completeness: In ES v5.0.0, we are throwing an exception that `date_detection` is an invalid parameter in that place.
---
### Author:  [@iamredlus](https://discuss.elastic.co/u/iamredlus)
#### Post date: [February 14, 2017, 3:49pm UTC](https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030/7 "2017-02-14T15:49:30Z")
Hey everyone,
On the same subject - do you know if it is possible to mix date\_detection true and false within the same mapping?
i.e. something similar to this:
> ```
> PUT /myindex
> {
> "mappings": {
> "_default_": {
> "dynamic": true,
> "date_detection": false,
> "dynamic_templates": [
> {
> "date_detection_off": {
> "match": "*_nodate",
> "match_mapping_type": "string",
> "mapping": {
> "type": "string",
> }
> }
> },
> {
> "date_detection_on": {
> "match": "*_yesdate",
> "match_mapping_type": "string",
> "mapping": {
> "type": "dateOptionalTime",
> "date_detection": true
> }
> }
> }
> ]
> }
> }
> }
>
> ```
Thanks
Lior
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2017, 10:03pm UTC](https://discuss.elastic.co/t/mappings--default--dynamic-templates-doesnt-show-up-in-resulting-mapping/59030/8 "2017-07-05T22:03:15Z")