29 lines
620 B
Markdown
29 lines
620 B
Markdown
title: F
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---
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summary: Helper object to refer to fields in query filters.
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---
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module: lektor.db
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---
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template_var: F
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---
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type: class
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---
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body:
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When filtering a [Query :ref](../query/) it's often necessary to refer to a
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field of an arbitrary record. This can be achieved with the `F` object. Any
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attribute of it refers to a field in the record. To make this clearer, have a
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look at the example below.
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Accessing an attributes creates an [Expression :ref](../expression/).
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## Example
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```html+jinja
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<ul>
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{% for item in this.children.filter(F.status == 'published') %}
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<li>{{ item.title }}</li>
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{% endfor %}
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</ul>
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```
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