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