Use HX-Location instead of HX-Refresh when editing invoices

This makes reload only the <main> portion of the page, instead of the
whole thing, which to me looks faster; haven’t really measured it.

Like with duplicate, i had to add the location query argument when
inside the view page in order to return back to the same page, not the
index.

pkg/invoices.go

@@ -847,11 +847,15 @@ func HandleUpdateInvoice(w http.ResponseWriter, r *http.Request, params httprout
 		if slug == "" {
 			http.NotFound(w, r)
 		}
+		indexUrl := companyURI(mustGetCompany(r), "/invoices")
 		if IsHTMxRequest(r) {
-			w.Header().Set("HX-Refresh", "true")
+			w.Header().Set("HX-Location", MustMarshalHTMxLocation(&HTMxLocation{
+				Path:   indexUrl,
+				Target: "main",
+			}))
 			w.WriteHeader(http.StatusNoContent)
 		} else {
-			http.Redirect(w, r, companyURI(mustGetCompany(r), "/invoices"), http.StatusSeeOther)
+			http.Redirect(w, r, indexUrl, http.StatusSeeOther)
 		}
 	} else {
 		slug := params[0].Value
@@ -865,12 +869,21 @@ func HandleUpdateInvoice(w http.ResponseWriter, r *http.Request, params httprout
 			http.NotFound(w, r)
 			return
 		}
+		viewUrl := companyURI(company, "/invoices/"+slug)
 		if IsHTMxRequest(r) {
 			w.Header().Set("HX-Trigger", "closeModal")
-			w.Header().Set("HX-Refresh", "true")
+			location := &HTMxLocation{
+				Target: "main",
+			}
+			if form.Location.Val == "view" {
+				location.Path = viewUrl
+			} else {
+				location.Path = companyURI(company, "/invoices")
+			}
+			w.Header().Set("HX-Location", MustMarshalHTMxLocation(location))
 			w.WriteHeader(http.StatusNoContent)
 		} else {
-			http.Redirect(w, r, companyURI(company, "/invoices/"+slug), http.StatusSeeOther)
+			http.Redirect(w, r, viewUrl, http.StatusSeeOther)
 		}
 	}
 }
@@ -885,6 +898,7 @@ func ServeEditInvoice(w http.ResponseWriter, r *http.Request, params httprouter.
 		http.NotFound(w, r)
 		return
 	}
+	form.Location.Val = r.URL.Query().Get("location")
 	w.WriteHeader(http.StatusOK)
 	mustRenderEditInvoiceForm(w, r, slug, form)
 }

web/template/invoices/view.gohtml

@@ -16,7 +16,7 @@
                href="{{ companyURI "/invoices/new"}}?duplicate={{ .Slug }}&amp;location=view">{{( pgettext "Duplicate" "action" )}}</a>
             <a class="button primary"
                data-hx-push-url="false" data-hx-swap="beforeend" data-hx-boost="true"
-               href="{{ companyURI "/invoices/"}}{{ .Slug }}/edit">{{( pgettext "Edit" "action" )}}</a>
+               href="{{ companyURI "/invoices/"}}{{ .Slug }}/edit?location=view">{{( pgettext "Edit" "action" )}}</a>
             <a class="primary button"
                href="{{ companyURI "/invoices/" }}{{ .Slug }}.pdf"
                download="{{ .Number}}.pdf">{{( pgettext "Download invoice" "action" )}}</a>