Mail sending optimization - implemented mail queue. Some minor optimizations.

src/backend/property.rs

@@ -7,7 +7,7 @@ use crate::components::data_form::ForValidation;
 cfg_if! { if #[cfg(feature = "ssr")] {
     use crate::backend::get_pool;
 
-    pub async fn get_props(filter: Option<String>) -> Result<Vec<ResProperty>, ServerFnError> {
+    pub async fn get_props(filter: Option<&'static str>) -> Result<Vec<ResProperty>, ServerFnError> {
         let pool = get_pool().await?;
         let props = if let Some(f) = filter {
             sqlx::query_as::<_, ResProperty>(&format!("SELECT * FROM property WHERE {} ORDER BY id", f)).fetch_all(&pool).await?
@@ -38,7 +38,7 @@ pub async fn get_properties() -> Result<ApiResponse<Vec<ResProperty>>, ServerFnE
 
 #[server]
 pub async fn get_active_properties() -> Result<ApiResponse<Vec<ResProperty>>, ServerFnError> {
-    let props = get_props(Some("active = true".to_string())).await?;
+    let props = get_props(Some("active = true")).await?;
 
     Ok(ApiResponse::Data(props))
 }