core/templates/pongo/loader.go
Alex Dunmow 32c6528162 feat(templates): add HTMLComponent interface and first-class pongo2 engine
Decouple TemplateFunc from templ.Component by introducing a generic
HTMLComponent interface that both templ and pongo2 satisfy via Go
structural typing. Add a complete pongo2 rendering engine in
templates/pongo/ with page templates, block templates (with BlockContext
injection and icon processing), template overrides, and email wrappers.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-06-02 23:07:11 +08:00

44 lines
906 B
Go

package pongo
import (
"fmt"
"io"
"io/fs"
"github.com/flosch/pongo2/v6"
)
// fsLoader adapts an fs.FS to pongo2's TemplateLoader interface.
type fsLoader struct {
fsys fs.FS
}
func (l *fsLoader) Abs(base, name string) string {
return name
}
func (l *fsLoader) Get(path string) (io.Reader, error) {
return l.fsys.Open(path)
}
// multiLoader chains multiple loaders, returning the first hit.
// Plugin templates can {% extends "base.html" %} where base.html
// lives in the core embedded FS rather than the plugin FS.
type multiLoader struct {
loaders []pongo2.TemplateLoader
}
func (l *multiLoader) Abs(base, name string) string {
return name
}
func (l *multiLoader) Get(path string) (io.Reader, error) {
for _, loader := range l.loaders {
r, err := loader.Get(path)
if err == nil {
return r, nil
}
}
return nil, fmt.Errorf("pongo: template %q not found in any loader", path)
}