lektor-website/content/docs/api/db/expression/contains/contents.lr

title: contains
---
summary: Checks if an item contains another one.
---
type: method
---
signature: item
---
body:

This expression evaluates to true if an item is contained within a field.
This works with fields that are lists in nature or [strings
:ref](../../types/string/).  For instance a string can be
contained in another string or a item can be contained within a list.

## Template Example

```html+jinja
<h3>Projects Tagged 'amazing'</h3>
<ul>
{% for item in this.children.filter(F.tags.contains('amazing')) %}
  <li>{{ item.name }}</li>
{% endfor %}
</ul>
```