reflect.IsImageResource

Reports whether the given value is a Resource object representing a processable image.

Syntax

reflect.IsImageResource INPUT

Returns

bool

New in v0.154.0

processable image（可处理图像）是具有以下 media types（媒体类型）之一的图像文件：

image/gif
image/jpeg
image/png
image/tiff
image/webp

Hugo 可以解码和编码这些图像格式，允许您使用适用于图像的 resource methods（资源方法），如 Width、Height、Crop、Fill、Fit、Resize 等�

With this project structure:

project/
├── assets/
│   ├── a.json
│   ├── b.avif
│   └── c.jpg
└── content/
    └── example/
        ├── index.md
        ├── d.json
        ├── e.avif
        └── f.jpg

These are the values returned by the reflect.IsImageResource function:

layouts/page.html

{{ with resources.Get "a.json" }}
  {{ reflect.IsImageResource . }} → false
{{ end }}

{{ with resources.Get "b.avif" }}
  {{ reflect.IsImageResource . }} → false
{{ end }}

{{ with resources.Get "c.jpg" }}
  {{ reflect.IsImageResource . }} → true
{{ end }}

In the example above, the b.avif image is not a processable image because Hugo can neither decode nor encode the AVIF image format.

layouts/page.html

{{ with .Resources.Get "d.json" }}
  {{ reflect.IsImageResource . }} → false
{{ end }}

{{ with .Resources.Get "e.avif" }}
  {{ reflect.IsImageResource . }} → false
{{ end }}

{{ with .Resources.Get "f.jpg" }}
  {{ reflect.IsImageResource . }} → true
{{ end }}

In the example above, the e.avif image is not a processable image because Hugo can neither decode nor encode the AVIF image format.

layouts/page.html

{{ with site.GetPage "/example" }}
  {{ reflect.IsImageResource . }} → false
{{ end }}

Last updated: January 1, 0001

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