init

src/model/valid.rs

@@ -0,0 +1,40 @@
+/// This trait allows a `Model` to be validated.
+pub trait Validate {
+    /// Validate the `Model`
+    async fn validate(&self) -> bool;
+}
+
+/// Validate a value and return `false` if validation fails.
+#[macro_export]
+macro_rules! validate {
+    ($val:expr) => {
+        if !$val.validate().await {
+            return false;
+        }
+    };
+}
+
+/// This macro checks for the type of a reference and is useful for validation.
+/// It will check all supplied types and return `false` if none are matching.
+///
+/// # Example
+/// ```
+/// fn validate(&self) -> bool {
+///     assert_reference_of!(self.owner, Person);
+///     true
+/// }
+/// ```
+#[macro_export]
+macro_rules! assert_reference_of {
+    ($var:expr, $($struct_name:ident),+) => {
+        let mut match_found = false;
+        $(
+            if $var.is_of_collection($struct_name::collection_name()) {
+                match_found = true;
+            }
+        )*
+        if !match_found {
+            return false;
+        }
+    };
+}