From c669b4294e35eff34be2bda3db390a323371ef2f Mon Sep 17 00:00:00 2001
From: Freja Roberts <ten3roberts@gmail.com>
Date: Tue, 20 Feb 2024 14:04:07 +0100
Subject: [PATCH] feat: FetchExt::filtered

---
 src/fetch/ext.rs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/fetch/ext.rs b/src/fetch/ext.rs
index 6c4728e..6c16a50 100644
--- a/src/fetch/ext.rs
+++ b/src/fetch/ext.rs
@@ -1,6 +1,6 @@
 use crate::{
     component::ComponentValue,
-    filter::{Cmp, Equal, Greater, GreaterEq, Less, LessEq},
+    filter::{Cmp, Equal, Filtered, Greater, GreaterEq, Less, LessEq},
     relation::RelationExt,
     Fetch, FetchItem,
 };
@@ -198,6 +198,15 @@ pub trait FetchExt: Sized {
     {
         Map { query: self, func }
     }
+
+    /// Filter a fetch with another fetch as predicate
+    fn filtered<F>(self, filter: F) -> Filtered<Self, F>
+    where
+        Self: for<'x> FetchItem<'x>,
+        F: for<'x> Fetch<'x>,
+    {
+        Filtered::new(self, filter, true)
+    }
 }
 
 impl<F> FetchExt for F where F: for<'x> Fetch<'x> {}