func reverseAppsArticle(a *app.App, art interface{}, checked map[*app.App]bool) (string, error) {
checked[a] = true
var articles []*article.Article
aa, _ := reusableapp.AppData(a).(*appData)
if aa != nil {
articles = aa.Articles
}
switch x := art.(type) {
case string:
for _, v := range articles {
if articleId(v) == x {
return a.Reverse(ArticleHandlerName, v.Slug())
}
}
case *article.Article:
return a.Reverse(ArticleHandlerName, x.Slug())
case article.Article:
return a.Reverse(ArticleHandlerName, x.Slug())
}
if p := a.Parent(); p != nil && !checked[p] {
return reverseAppsArticle(p, art, checked)
}
for _, v := range a.Included() {
if checked[v] {
continue
}
if url, err := reverseAppsArticle(v, art, checked); err == nil {
return url, nil
}
}
if id, ok := art.(string); ok {
return "", fmt.Errorf("no article with id %q found", id)
}
return "", fmt.Errorf("can't reverse Article from %T, must be *Article or string (article id)", art)
}
