From 9bea9a4dddb66d94de3fe41ee50fad01c39158da Mon Sep 17 00:00:00 2001
From: Kitano <kitano@influx.io>
Date: Mon, 13 Jan 2025 17:47:29 +0800
Subject: [PATCH] feat(components): [cascader] add prefix slot

---
 .../cascader/__tests__/cascader.test.tsx          | 15 +++++++++++++++
 packages/components/cascader/src/cascader.vue     |  3 +++
 2 files changed, 18 insertions(+)

diff --git a/packages/components/cascader/__tests__/cascader.test.tsx b/packages/components/cascader/__tests__/cascader.test.tsx
index 731d92bcd4..3e05fb0bab 100644
--- a/packages/components/cascader/__tests__/cascader.test.tsx
+++ b/packages/components/cascader/__tests__/cascader.test.tsx
@@ -559,4 +559,19 @@ describe('Cascader.vue', () => {
       expect(emptySlotEl?.textContent).toBe('-=-empty-=-no-data')
     })
   })
+
+  describe('render prefix slot', () => {
+    it('correct render prefix slot', async () => {
+      _mount(() => (
+        <Cascader>
+          {{
+            prefix: () => <div>-=-prefix-=-</div>,
+          }}
+        </Cascader>
+      ))
+
+      const prefixSlotEl = document.querySelector('.el-input__prefix-inner')
+      expect(prefixSlotEl?.textContent).toBe('-=-prefix-=-')
+    })
+  })
 })
diff --git a/packages/components/cascader/src/cascader.vue b/packages/components/cascader/src/cascader.vue
index 27e875bcd2..4231f118ca 100644
--- a/packages/components/cascader/src/cascader.vue
+++ b/packages/components/cascader/src/cascader.vue
@@ -42,6 +42,9 @@
           @blur="handleBlur"
           @input="handleInput"
         >
+          <template #prefix>
+            <slot name="prefix" />
+          </template>
           <template #suffix>
             <el-icon
               v-if="clearBtnVisible"