# Canvas - Time Filter has no Data Source?

**URL:** <https://discuss.elastic.co/t/canvas-time-filter-has-no-data-source/305763>\
**Category:** Kibana\
**Tags:** canvas\
**Created:** [May 27, 2022, 2:52am UTC](https://discuss.elastic.co/t/canvas-time-filter-has-no-data-source/305763 "2022-05-27T02:52:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dave21854207](https://avatars.discourse-cdn.com/v4/letter/d/6de8d8/32.png) [@Dave21854207](https://discuss.elastic.co/u/Dave21854207)\
**Post date:** [May 27, 2022, 2:52am UTC](https://discuss.elastic.co/t/canvas-time-filter-has-no-data-source/305763/1 "2022-05-27T02:52:34Z")

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![Capture](https://us1.discourse-cdn.com/elastic/original/3X/9/9/99fd3f69b8048c0feefb3074b655a44be211fe8d.png)  
I cant find any info on how to add a data source to the canvas time filter? It just appears to be a static image

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**Author:** ![charlesfr.rey](https://avatars.discourse-cdn.com/v4/letter/c/c6cbf5/32.png) [@charlesfr.rey](https://discuss.elastic.co/u/charlesfr.rey)\
**Post date:** [May 31, 2022, 5:09pm UTC](https://discuss.elastic.co/t/canvas-time-filter-has-no-data-source/305763/2 "2022-05-31T17:09:58Z")

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Why would you add a datasource to a time filter ? (i.e. what are you trying to achieve)

It's purpose is to apply a filter to a time column (by default `@timestamp`, but could be another column). Since it is a time filter, the values come from what the widget shows. Doc is here : [https://www.elastic.co/guide/en/kibana/8.2/canvas-function-reference.html#timefilter\_fn](https://www.elastic.co/guide/en/kibana/8.2/canvas-function-reference.html#timefilter_fn)

`dropdownControl`, on the other side, is a more generic filter that takes a datasource as input for the values that can be selected : [https://www.elastic.co/guide/en/kibana/8.2/canvas-function-reference.html#dropdownControl\_fn](https://www.elastic.co/guide/en/kibana/8.2/canvas-function-reference.html#dropdownControl_fn)

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 28, 2022, 5:10pm UTC](https://discuss.elastic.co/t/canvas-time-filter-has-no-data-source/305763/3 "2022-06-28T17:10:54Z")

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