Extract getImportantData to own file

http/budget.go

@@ -10,11 +10,12 @@ import (
 )
 
 type BudgetData struct {
-	Budget       *postgres.Budget
+	AlwaysNeededData
 	Transactions []postgres.GetTransactionsForBudgetRow
 }
 
 func (h *Handler) budget(c *gin.Context) {
+	base := c.MustGet("data").(AlwaysNeededData)
 	budgetID := c.Param("budgetid")
 	budgetUUID, err := uuid.Parse(budgetID)
 	if err != nil {
@@ -22,12 +23,6 @@ func (h *Handler) budget(c *gin.Context) {
 		return
 	}
 
-	budget, err := h.Service.DB.GetBudget(context.Background(), budgetUUID)
-	if err != nil {
-		c.AbortWithError(http.StatusNotFound, err)
-		return
-	}
-
 	transactions, err := h.Service.DB.GetTransactionsForBudget(context.Background(), budgetUUID)
 	if err != nil {
 		c.AbortWithError(http.StatusInternalServerError, err)
@@ -35,8 +30,8 @@ func (h *Handler) budget(c *gin.Context) {
 	}
 
 	d := BudgetData{
-		Budget:       &budget,
-		Transactions: transactions,
+		base,
+		transactions,
 	}
 
 	c.HTML(http.StatusOK, "budget.html", d)