---
title: UnsupportedFilterArguments
description: >-
  Identifies when filters are applied to arguments passed to a `render`,
  `include`, or `content_for` tag.
source_url:
  html: >-
    https://shopify.dev/docs/storefronts/themes/tools/theme-check/checks/unsupported-filter-arguments
  md: >-
    https://shopify.dev/docs/storefronts/themes/tools/theme-check/checks/unsupported-filter-arguments.md
api_name: liquid
---

# Unsupported​Filter​Arguments

Filters aren't supported on values passed as arguments to the [`render`](https://shopify.dev/docs/api/liquid/tags/render), [`include`](https://shopify.dev/docs/api/liquid/tags/include), or [`content_for`](https://shopify.dev/docs/api/liquid/tags/content_for) tags. When a filter is applied to an argument, the value is silently passed through unchanged, which can produce unexpected output with no feedback.

To use a filtered value as an argument, apply the filter beforehand with an [`assign`](https://shopify.dev/docs/api/liquid/tags/assign) tag and pass the resulting variable instead.

***

## Examples

The following examples contain code snippets that either pass or fail this check.

### ✗ Fail

In the following example, a filter is applied directly to an argument passed to the `render` tag. The filter is ignored, so `text` is rendered as `Hello,` instead of `Hello, World!`:

## sections/section.liquid

```liquid
{% render 'paragraph', text: 'Hello,' | append: ' World!' %}
```

### ✓ Pass

In the following example, the filter is applied with an `assign` tag and the resulting variable is passed as the argument:

## sections/section.liquid

```liquid
{% assign text = 'Hello,' | append: ' World!' %}
{% render 'paragraph', text: text %}
```

***

## Options

The following example contains the default configuration for this check:

```yaml
UnsupportedFilterArguments:
  enabled: true
  severity: error
```

| Parameter | Description |
| - | - |
| `enabled` | Whether this check is enabled. |
| `severity` | The [severity](https://shopify.dev/docs/storefronts/themes/tools/theme-check/configuration#check-severity) of the check. |

***

## Disabling this check

Disabling this check isn't recommended.

***