Erste Experimente mit Reihen

pages/reihen.go

@@ -0,0 +1,75 @@
+package pages
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/Theodor-Springmann-Stiftung/musenalm/app"
+	"github.com/Theodor-Springmann-Stiftung/musenalm/dbmodels"
+	"github.com/Theodor-Springmann-Stiftung/musenalm/pagemodels"
+	"github.com/Theodor-Springmann-Stiftung/musenalm/templating"
+	"github.com/pocketbase/dbx"
+	"github.com/pocketbase/pocketbase/core"
+	"github.com/pocketbase/pocketbase/tools/router"
+)
+
+const (
+	URL_REIHEN   = "/reihen/"
+	PARAM_LETTER = "letter"
+)
+
+func init() {
+	rp := &ReihenPage{
+		Page: pagemodels.Page{
+			Name: pagemodels.P_REIHEN_NAME,
+		},
+	}
+	app.Register(rp)
+}
+
+type ReihenPage struct {
+	pagemodels.Page
+}
+
+func (p *ReihenPage) Up(app core.App) error {
+	return nil
+}
+
+func (p *ReihenPage) Down(app core.App) error {
+	return nil
+}
+
+func (p *ReihenPage) Setup(router *router.Router[*core.RequestEvent], app core.App, engine *templating.Engine) error {
+	router.GET(URL_REIHEN, func(e *core.RequestEvent) error {
+		letter := e.Request.URL.Query().Get(PARAM_LETTER)
+		if letter == "" {
+			letter = "A"
+		}
+
+		series := []*dbmodels.Series{}
+		err := app.RecordQuery(dbmodels.SERIES_TABLE).
+			AndWhere(dbx.NewExp(dbmodels.SERIES_TITLE_FIELD + " LIKE '" + letter + "%'")).
+			OrderBy(dbmodels.SERIES_TITLE_FIELD).
+			All(&series)
+		// INFO: this does not return an error if the result set is empty
+		if err != nil {
+			return err
+		}
+
+		// INFO: We sort again since the query can't sort german umlauts correctly
+		dbmodels.SortSeriesByTitle(series)
+
+		var builder strings.Builder
+		err = engine.Render(&builder, URL_REIHEN, map[string]interface{}{
+			PARAM_LETTER: letter,
+			"series":     series,
+		})
+		if err != nil {
+			return err
+		}
+
+		return e.HTML(http.StatusOK, builder.String())
+	})
+	return nil
+}