Added CRUD helper method

routes/api/v1/CRUD_helper.go

@@ -0,0 +1,57 @@
+package v1
+
+import (
+	"git.kolaente.de/konrad/list/models"
+	"github.com/labstack/echo"
+	"net/http"
+	"strconv"
+)
+
+// Basic Method definitions
+type CRUD interface {
+	Create()
+	Read(int64) (error)
+	Update()
+	Delete()
+}
+
+// We use this to acces the default methods
+type DefaultCRUD struct {
+	CRUD
+	Target interface{}
+}
+
+// This method gets our data, which will be called by ReadWeb()
+func (d *DefaultCRUD) Read(id int64) (err error) {
+	return models.GetByID(id, d.Target)
+}
+
+// This does web stuff, aka returns json etc. Uses DefaultCRUD Methods to get the data
+type CRUDWebHandler struct {
+	CObject CRUD
+}
+
+// This does json, handles the request
+func (c *CRUDWebHandler) ReadOneWeb(ctx echo.Context) error {
+
+	// Get the ID
+	id, err := strconv.ParseInt(ctx.Param("id"), 10, 64)
+	if err != nil {
+		return ctx.JSON(http.StatusBadRequest, models.Message{"Invalid ID."})
+	}
+
+	// TODO check rights
+
+	// Get our object
+	err = c.CObject.Read(id)
+	if err != nil {
+		if models.IsErrListDoesNotExist(err) {
+			return ctx.JSON(http.StatusNotFound, models.Message{"Not found."})
+		}
+
+		return ctx.JSON(http.StatusInternalServerError, models.Message{"An error occured."})
+	}
+
+	// TODO how can we return c.CObject.Targetdirectly?
+	return ctx.JSON(http.StatusOK, c.CObject)
+}