# Able to filter a field from document
**URL:** https://discuss.elastic.co/t/able-to-filter-a-field-from-document/20083
**Category:** Elasticsearch
**Created:** [October 6, 2014, 7:02am UTC](https://discuss.elastic.co/t/able-to-filter-a-field-from-document/20083 "2014-10-06T07:02:30Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Gurvinder\_Singh](https://discuss.elastic.co/u/Gurvinder_Singh)
#### Post date: [October 6, 2014, 7:02am UTC](https://discuss.elastic.co/t/able-to-filter-a-field-from-document/20083/1 "2014-10-06T07:02:30Z")
I am wondering if it is possible to filter a field from a document
using aliases. For example if I have an index with documents such as
{
"user" : "test",
"secret\_field": "value",
"post\_date" : "2014-06-05T09:12:12",
"message" : "trying out Elasticsearch"
}
Now if I want to create an alias for this index which has all the
documents with fields as above except the secret\_field. I can use the
term filter in the alias creation but that works at document level and
filters the documents based on specified terms. So I am wondering is
there any other method to filter only field but not the whole document
from index.
Regards,
Gurvinder
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [October 6, 2014, 7:14am UTC](https://discuss.elastic.co/t/able-to-filter-a-field-from-document/20083/2 "2014-10-06T07:14:13Z")
I'm not sure I understood what you are looking for.
May be exclude is what you want?
See: [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/mapping-source-field.html#include-exclude)
> Le 6 oct. 2014 à 09:02, Gurvinder Singh [gurvindersinghdahiya@gmail.com](mailto:gurvindersinghdahiya@gmail.com) a écrit :
>
> I am wondering if it is possible to filter a field from a document
> using aliases. For example if I have an index with documents such as
>
> {
> "user" : "test",
> "secret\_field": "value",
> "post\_date" : "2014-06-05T09:12:12",
> "message" : "trying out Elasticsearch"
> }
>
> Now if I want to create an alias for this index which has all the
> documents with fields as above except the secret\_field. I can use the
> term filter in the alias creation but that works at document level and
> filters the documents based on specified terms. So I am wondering is
> there any other method to filter only field but not the whole document
> from index.
>
> Regards,
> Gurvinder
>
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### Author:  [@Gurvinder\_Singh](https://discuss.elastic.co/u/Gurvinder_Singh)
#### Post date: [October 7, 2014, 6:26am UTC](https://discuss.elastic.co/t/able-to-filter-a-field-from-document/20083/3 "2014-10-07T06:26:20Z")
On 10/06/2014 09:14 AM, David Pilato wrote:
> I'm not sure I understood what you are looking for.
> May be exclude is what you want?
>
> See: [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/mapping-source-field.html#include-exclude)
> This might have worked if Elasticsearch can apply mapping seperately to
> aliases. As it seems in version 1.3.2, the mapping is only applied to
> the index and alias inherent that from index. So I can not use source
> exclusion, as I want to have secret field in original index and hidden
> in the alias.
- Gurvinder
> Le 6 oct. 2014 à 09:02, Gurvinder Singh \<[gurvindersinghdahiya@gmail.com](mailto:gurvindersinghdahiya@gmail.com)
> [mailto:gurvindersinghdahiya@gmail.com](mailto:gurvindersinghdahiya@gmail.com)\> a écrit :
>
> > I am wondering if it is possible to filter a field from a document
> > using aliases. For example if I have an index with documents such as
> >
> > {
> > "user" : "test",
> > "secret\_field": "value",
> > "post\_date" : "2014-06-05T09:12:12",
> > "message" : "trying out Elasticsearch"
> > }
> >
> > Now if I want to create an alias for this index which has all the
> > documents with fields as above except the secret\_field. I can use the
> > term filter in the alias creation but that works at document level and
> > filters the documents based on specified terms. So I am wondering is
> > there any other method to filter only field but not the whole document
> > from index.
> >
> > Regards,
> > Gurvinder
> >
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> > [https://groups.google.com/d/msgid/elasticsearch/54323E86.8000001%40gmail.com](https://groups.google.com/d/msgid/elasticsearch/54323E86.8000001%40gmail.com).
> > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout).
>
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> [https://groups.google.com/d/msgid/elasticsearch/3C7E7F56-792C-4425-A4C0-A55A3C78D380%40pilato.fr?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/3C7E7F56-792C-4425-A4C0-A55A3C78D380%40pilato.fr?utm_medium=email&utm_source=footer).
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 12:57am UTC](https://discuss.elastic.co/t/able-to-filter-a-field-from-document/20083/4 "2017-07-06T00:57:59Z")