Extract loading of accounts to middleware

http/accounts.go

@@ -8,26 +8,19 @@ import (
 	"github.com/google/uuid"
 )
 
-type AccountsData struct {
+type AlwaysNeededData struct {
+	Budget   postgres.Budget
 	Accounts []postgres.GetAccountsWithBalanceRow
 }
 
+type AccountsData struct {
+	AlwaysNeededData
+}
+
 func (h *Handler) accounts(c *gin.Context) {
-	budgetID := c.Param("budgetid")
-	budgetUUID, err := uuid.Parse(budgetID)
-	if err != nil {
-		c.Redirect(http.StatusTemporaryRedirect, "/login")
-		return
-	}
-
-	accounts, err := h.Service.DB.GetAccountsWithBalance(c.Request.Context(), budgetUUID)
-	if err != nil {
-		c.AbortWithError(http.StatusInternalServerError, err)
-		return
-	}
-
+	base := c.MustGet("data").(AlwaysNeededData)
 	d := AccountsData{
-		Accounts: accounts,
+		base,
 	}
 
 	c.HTML(http.StatusOK, "accounts.html", d)