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Group template helper functions, remove Printf, improve template error messages (#23982)

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Major changes:

* Group the function in `templates/help.go` by their purposes. It could
make future work easier.
* Remove the `Printf` helper function, there is already a builtin
`printf`.
* Remove `DiffStatsWidth`, replace with `Eval` in template
* Rename the `NewTextFuncMap` to `mailSubjectTextFuncMap`, it's for
subject text template only, no need to make it support HTML functions.


----

And fine tune template error messages, to make it more friendly to
developers and users.


![image](https://user-images.githubusercontent.com/2114189/230714245-4fd202d1-2b25-41b2-8be5-03c5fee45091.png)


![image](https://user-images.githubusercontent.com/2114189/230714277-66783577-2a03-49d5-8e8c-ceba5e07a2d4.png)

---------

Co-authored-by: silverwind <me@silverwind.io>
This commit is contained in:
wxiaoguang 2023-04-08 21:15:22 +08:00 • committed by GitHub
parent cf5a281fdc
commit fdbd646113
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15 changed files with 307 additions and 295 deletions
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8
modules/context/context.go
View file

@ -47,7 +47,7 @@ import (
// Render represents a template render
type Render interface {
TemplateLookup(tmpl string) *template.Template
TemplateLookup(tmpl string) (*template.Template, error)
HTML(w io.Writer, status int, name string, data interface{}) error
}
@ -228,7 +228,7 @@ func (ctx *Context) HTML(status int, name base.TplName) {
}
if err := ctx.Render.HTML(ctx.Resp, status, string(name), templates.BaseVars().Merge(ctx.Data)); err != nil {
if status == http.StatusInternalServerError && name == base.TplName("status/500") {
ctx.PlainText(http.StatusInternalServerError, "Unable to find status/500 template")
ctx.PlainText(http.StatusInternalServerError, "Unable to find HTML templates, the template system is not initialized, or Gitea can't find your template files.")
return
}
if execErr, ok := err.(texttemplate.ExecError); ok {
@ -247,7 +247,7 @@ func (ctx *Context) HTML(status int, name base.TplName) {
if errorTemplateName != string(name) {
filename += " (subtemplate of " + string(name) + ")"
}
err = fmt.Errorf("%w\nin template file %s:\n%s", err, filename, templates.GetLineFromTemplate(errorTemplateName, line, target, pos))
err = fmt.Errorf("failed to render %s, error: %w:\n%s", filename, err, templates.GetLineFromTemplate(errorTemplateName, line, target, pos))
} else {
filename, filenameErr := templates.GetAssetFilename("templates/" + execErr.Name + ".tmpl")
if filenameErr != nil {
@ -256,7 +256,7 @@ func (ctx *Context) HTML(status int, name base.TplName) {
if execErr.Name != string(name) {
filename += " (subtemplate of " + string(name) + ")"
}
err = fmt.Errorf("%w\nin template file %s", err, filename)
err = fmt.Errorf("failed to render %s, error: %w", filename, err)
}
}
ctx.ServerError("Render failed", err)