Err
文法
RESOURCE.Err
戻り値
resource.resourceError
The Err method on a resource returned by the resources.GetRemote function returns an error message if the HTTP request fails, else nil. If you do not handle the error yourself, Hugo will fail the build.
In this example we send an HTTP request to a nonexistent domain:
{{ $url := "https://broken-example.org/images/a.jpg" }}
{{ with resources.GetRemote $url }}
{{ with .Err }}
{{ errorf "%s" . }}
{{ else }}
<img src="{{ .RelPermalink }}" width="{{ .Width }}" height="{{ .Height }}" alt="">
{{ end }}
{{ else }}
{{ errorf "Unable to get remote resource %q" $url }}
{{ end }}
The code above captures the error from the HTTP request, then fails the build:
ERROR error calling resources.GetRemote: Get "https://broken-example.org/images/a.jpg": dial tcp: lookup broken-example.org on 127.0.0.53:53: no such host
To log an error as a warning instead of an error:
{{ $url := "https://broken-example.org/images/a.jpg" }}
{{ with resources.GetRemote $url }}
{{ with .Err }}
{{ warnf "%s" . }}
{{ else }}
<img src="{{ .RelPermalink }}" width="{{ .Width }}" height="{{ .Height }}" alt="">
{{ end }}
{{ else }}
{{ errorf "Unable to get remote resource %q" $url }}
{{ end }}