mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-21 20:46:30 -05:00
tpl: Add errorf template function
Add template function that will build a string from the given format string and arguments, then log it to ERROR. This has an intended side-effect of causing the build to fail, when executed. Resolves #3817
This commit is contained in:
parent
47fdfd5196
commit
4fc67fe44a
3 changed files with 41 additions and 2 deletions
26
docs/content/functions/errorf.md
Normal file
26
docs/content/functions/errorf.md
Normal file
|
@ -0,0 +1,26 @@
|
|||
---
|
||||
title: errorf
|
||||
linktitle: errorf
|
||||
description: Evaluates a format string and logs it to ERROR.
|
||||
date: 2017-09-30
|
||||
publishdate: 2017-09-30
|
||||
lastmod: 2017-09-30
|
||||
categories: [functions]
|
||||
menu:
|
||||
docs:
|
||||
parent: "functions"
|
||||
keywords: [strings, log, error]
|
||||
signature: ["errorf FORMAT INPUT"]
|
||||
workson: []
|
||||
hugoversion:
|
||||
relatedfuncs: [printf]
|
||||
deprecated: false
|
||||
aliases: []
|
||||
---
|
||||
|
||||
`errorf` will evaluate a format string, then output the result to the ERROR log.
|
||||
This will also cause the build to fail.
|
||||
|
||||
```
|
||||
{{ errorf "Something went horribly wrong! %s" err }}
|
||||
```
|
|
@ -15,15 +15,17 @@ package fmt
|
|||
|
||||
import (
|
||||
_fmt "fmt"
|
||||
"github.com/gohugoio/hugo/helpers"
|
||||
)
|
||||
|
||||
// New returns a new instance of the fmt-namespaced template functions.
|
||||
func New() *Namespace {
|
||||
return &Namespace{}
|
||||
return &Namespace{helpers.NewDistinctErrorLogger()}
|
||||
}
|
||||
|
||||
// Namespace provides template functions for the "fmt" namespace.
|
||||
type Namespace struct {
|
||||
errorLogger *helpers.DistinctLogger
|
||||
}
|
||||
|
||||
// Print returns string representation of the passed arguments.
|
||||
|
@ -41,3 +43,8 @@ func (ns *Namespace) Printf(format string, a ...interface{}) string {
|
|||
func (ns *Namespace) Println(a ...interface{}) string {
|
||||
return _fmt.Sprintln(a...)
|
||||
}
|
||||
|
||||
func (ns *Namespace) Errorf(format string, a ...interface{}) string {
|
||||
ns.errorLogger.Printf(format, a...)
|
||||
return _fmt.Sprintf(format, a...)
|
||||
}
|
||||
|
|
|
@ -50,8 +50,14 @@ func init() {
|
|||
},
|
||||
)
|
||||
|
||||
return ns
|
||||
ns.AddMethodMapping(ctx.Errorf,
|
||||
[]string{"errorf"},
|
||||
[][2]string{
|
||||
{`{{ errorf "%s." "failed" }}`, `failed.`},
|
||||
},
|
||||
)
|
||||
|
||||
return ns
|
||||
}
|
||||
|
||||
internal.AddTemplateFuncsNamespace(f)
|
||||
|
|
Loading…
Reference in a new issue