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32 lines
1.6 KiB
Markdown
32 lines
1.6 KiB
Markdown
---
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navigation_title: "Lowercase"
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mapped_pages:
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- https://www.elastic.co/guide/en/elasticsearch/reference/current/lowercase-processor.html
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---
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# Lowercase processor [lowercase-processor]
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Converts a string to its lowercase equivalent. If the field is an array of strings, all members of the array will be converted.
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$$$lowercase-options$$$
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| Name | Required | Default | Description |
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| --- | --- | --- | --- |
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| `field` | yes | - | The field to make lowercase |
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| `target_field` | no | `field` | The field to assign the converted value to, by default `field` is updated in-place |
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| `ignore_missing` | no | `false` | If `true` and `field` does not exist or is `null`, the processor quietly exits without modifying the document |
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| `description` | no | - | Description of the processor. Useful for describing the purpose of the processor or its configuration. |
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| `if` | no | - | Conditionally execute the processor. See [Conditionally run a processor](docs-content://manage-data/ingest/transform-enrich/ingest-pipelines.md#conditionally-run-processor). |
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| `ignore_failure` | no | `false` | Ignore failures for the processor. See [Handling pipeline failures](docs-content://manage-data/ingest/transform-enrich/ingest-pipelines.md#handling-pipeline-failures). |
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| `on_failure` | no | - | Handle failures for the processor. See [Handling pipeline failures](docs-content://manage-data/ingest/transform-enrich/ingest-pipelines.md#handling-pipeline-failures). |
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| `tag` | no | - | Identifier for the processor. Useful for debugging and metrics. |
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```js
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{
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"lowercase": {
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"field": "foo"
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}
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}
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```
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