Add classrooms section with grade and classroom rosters

internal/directory/directory.go

@@ -36,6 +36,8 @@ func Register(mux *http.ServeMux, cache *Cache) {
 	}
 	mux.HandleFunc("GET /people/{email}", a.page)
 	mux.HandleFunc("GET /families/{key}", a.page)
+	mux.HandleFunc("GET /classrooms/{name}", a.page)
+	mux.HandleFunc("GET /grades/{name}", a.page)
 	mux.HandleFunc("GET /dl/", a.legacyRedirect)
 	mux.HandleFunc("GET /api/directory/model", a.model)
 }

internal/directory/load.go

@@ -125,9 +125,13 @@ func LoadModel(source data.Source) (*Model, error) {
 		if row["Class"] == "" {
 			continue
 		}
+		imageURL := ""
+		if row["Classroom Image"] != "" {
+			imageURL = "/static/brand/classrooms/classroom-" + strings.ToLower(row["Class"]) + ".jpg"
+		}
 		model.Classrooms = append(model.Classrooms, Classroom{
 			Name:        row["Class"],
-			ImageURL:    row["Classroom Image"],
+			ImageURL:    imageURL,
 			HasSections: row["Has Sections"] == "TRUE",
 		})
 	}