// Generate a BaseHRef-relative link to this page
func (d *DataObjectBase) Link(args ...string) string {
hier := orm.IsHierarchical(d.ClassName)
if !hier {
return ""
}
obj := interface{}(d)
res := d.URLSegment
// @todo data.Eval.(int) may fail for a map where the ParentID may have type of string
for parentID := data.Eval(obj, "ParentID").(int); parentID > 0; {
// @todo don't hardcode "SiteTree", derive the base class using metadata.
q := orm.NewQuery("SiteTree").Where("\"SiteTree_Live\".\"ID\"=" + strconv.Itoa(parentID))
ds, e := q.Run()
if e != nil {
return ""
}
items, _ := ds.(orm.DataList).Items()
obj = items[0]
res = data.Eval(obj, "URLSegment").(string) + "/" + res
}
for _, a := range args {
res += "/" + a
}
if res == "home" {
res = "/"
}
return res
}
// helper function to get a variable or function reference from a context object. If context
// implements goss.Evaluater, then call Get directly on it. Otherwise use the default locator
// via data.Eval
func (exec *executer) evaluate(context interface{}, name string, args ...interface{}) interface{} {
e, ok := context.(goss.Evaluater)
if ok {
return e.Get(name, args...)
}
return data.Eval(context, name, args...)
}
func (c *ContentControllerStruct) ServeHTTP(w http.ResponseWriter, r *http.Request) {
className := data.Eval(c.GetObject(), "ClassName").(string)
templates := []string{"Page", className}
e := template.RenderWith(w, templates, c.context, nil, r)
if e != nil {
ErrorHandler(w, e)
return
}
}
// LinkingMode returns one of 3 values:
// - "link" if none of this page or its children are current
// - "section" if a child of this page is open
// - "current" this page is open
func LinkingMode(r *http.Request, obj interface{}) string {
// get relative path to obj
// get relative path of request URL
// if same -> current
// if request path is a subset of obj path
// otherwise link
requestRel := r.URL.Path
pageRel := data.Eval(obj, "Link").(string)
// fmt.Printf("Linking mode: requestRel: '%s', pageRel: '%s'\n", requestRel, pageRel)
if requestRel == pageRel {
return "current"
} else if len(requestRel) < len(pageRel) && requestRel == pageRel[0:len(requestRel)] {
return "section"
}
return "link"
}
// Given a page, find a controller that says it can handle it, and render the page with that.
func renderWithMatchedController(w http.ResponseWriter, r *http.Request, page interface{}) {
// locate a controller%s\n", page)
className := data.Eval(page, "ClassName").(string)
c, e := getControllerInstance(className)
if e != nil {
ErrorHandler(w, e)
return
}
c.Init(r)
// if the controller is a ContentController then set the object.
if cc, ok := c.(ContentController); ok {
cc.SetObject(page)
cc.SetContext(c)
}
// fmt.Printf("after init c is %s\n", c)
c.ServeHTTP(w, r)
}
