func ArticleHandler(ctx *app.Context) {
slug := ctx.IndexValue(0)
var art *article.Article
articles := getArticles(ctx)
for _, v := range articles {
if v.Slug() == slug {
art = v
break
}
}
if art == nil {
for _, v := range articles {
for _, s := range v.AllSlugs() {
if s == slug {
ctx.MustRedirectReverse(true, ctx.HandlerName(), s)
return
}
}
}
ctx.NotFound("article not found")
return
}
fs := vfs.Memory()
filename := path.Base(art.Filename)
if filename == "" {
filename = "article.html"
}
if err := vfs.WriteFile(fs, filename, art.Text, 0644); err != nil {
panic(err)
}
log.Debugf("loading article %s", articleId(art))
tmpl, err := app.LoadTemplate(ctx.App(), fs, nil, filename)
if err != nil {
panic(err)
}
var buf bytes.Buffer
if err := tmpl.ExecuteTo(&buf, ctx, nil); err != nil {
panic(err)
}
body := buf.String()
data := map[string]interface{}{
"Article": art,
"Title": art.Title(),
"Body": template.HTML(body),
}
ctx.MustExecute("article.html", data)
}
// NewPager returns a new *Pager instance. Note that the
// Context must satisfy the conditions mentioned in the
// Pager type documentation. Otherwise an error will be
// returned.
func NewPager(ctx *app.Context) (*Pager, error) {
name := ctx.HandlerName()
if name == "" {
return nil, errors.New("can't generate a pager from an unnamed handler")
}
names := ctx.Provider().ParamNames()
if len(names) == 0 {
return nil, errors.New("can't generate a pager from a handler with no parameters, must have a page parameter")
}
if names[len(names)-1] != "page" {
return nil, fmt.Errorf("last named parameter is %q, not page", names[len(names)-1])
}
params := make([]interface{}, ctx.Count()-1)
for ii := 0; ii < ctx.Count()-1; ii++ {
params[ii] = ctx.IndexValue(ii)
}
return &Pager{
Name: name,
Parameters: params,
Ctx: ctx,
}, nil
}