gophertype/pkg/responses/templates.go

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package responses
import (
"html/template"
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"io"
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"net/http"
"git.kirsle.net/apps/gophertype/pkg/console"
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"git.kirsle.net/apps/gophertype/pkg/markdown"
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)
// RenderTemplate renders a Go HTML template.
// The io.Writer can be an http.ResponseWriter.
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func RenderTemplate(w io.Writer, r *http.Request, tmpl string, vars interface{}) error {
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if vars == nil {
vars = NewTemplateVars(w, r)
}
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// Look for the built-in template.
b, err := GetFile(tmpl)
if err == nil {
t, err := template.New(tmpl).Funcs(TemplateFuncs(r)).Parse(string(b))
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if err != nil {
console.Error("RenderTemplate: bundled template '%s': %s", tmpl, err)
return err
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}
// We found the template. Can we find the layout html?
if layout, err := GetFile(".layout.gohtml"); err == nil {
_, err := t.New("layout").Parse(string(layout))
if err != nil {
console.Error("RenderTemplate(.layout.gohtml): %s", err)
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}
} else {
console.Error("RenderTemplate: .layout.gohtml not found to wrap %s", tmpl)
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}
console.Debug("Render Templ: %s", tmpl)
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if err := t.ExecuteTemplate(w, "layout", vars); err != nil {
console.Error("RenderTemplate(%s): %s", tmpl, err)
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}
return nil
}
Panic(w, http.StatusInternalServerError, err.Error())
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return nil
}
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// RenderMarkdown renders a Markdown page in the layout template.
func RenderMarkdown(w io.Writer, r *http.Request, tmpl string) error {
vars := NewTemplateVars(w, r)
b, err := GetFile(tmpl)
if err == nil {
body := string(b)
title, _ := markdown.TitleFromMarkdown(body)
vars.V["title"] = title
vars.V["markdown"] = template.HTML(markdown.RenderTrustedMarkdown(body))
RenderTemplate(w, r, "_builtin/markdown.gohtml", vars)
return nil
}
Panic(w, http.StatusInternalServerError, err.Error())
return nil
}
// PartialTemplate renders a partial HTML template.
func PartialTemplate(w io.Writer, r *http.Request, tmpl string, vars interface{}) error {
if vars == nil {
vars = NewTemplateVars(w, r)
}
// Look for the built-in template.
b, err := GetFile(tmpl)
if err == nil {
t, err := template.New(tmpl).Funcs(TemplateFuncs(r)).Parse(string(b))
if err != nil {
console.Error("RenderTemplate: bundled template '%s': %s", tmpl, err)
return err
}
if err := t.ExecuteTemplate(w, tmpl, vars); err != nil {
console.Error("PartialTemplate(%s): %s", tmpl, err)
}
return nil
}
Panic(w, http.StatusInternalServerError, err.Error())
return nil
}