33 lines
882 B
Plaintext
33 lines
882 B
Plaintext
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title: _id
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---
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summary: The local identifier of a record.
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---
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type: sysfield
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---
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body:
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Each record has an `_id`. This ID is basically a form of the filename.
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Depending on if you are looking at an attachment or a page the rules are
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slightly different.
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For pages the ID is the name of the folder. So if you have a page called
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`docs/overview/contents.lr` then `_id` is `overview`. If you have however
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an attachment named `docs/overview/screenshot.jpg` the `_id` will be the
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filename of the attachment: `screenshot.jpg`.
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Note that IDs are not globally unique! There is also the `_path` which is
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the entire path if the record.
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The `_id` is automatically set and cannot be overridden.
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## Example
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```html+jinja
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<ul class="nav">
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{% for item in site.query('/projects') %}
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<li{% if item._id == this._id %} class="active"{%
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endif %}>{{ item.name }}</li>
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{% endfor %}
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</ul>
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```
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