From 2c2bab93fc18bce484abe3ac4a8c4335f86789ee Mon Sep 17 00:00:00 2001
From: may <53140703+soo-toance@users.noreply.github.com>
Date: Thu, 11 Sep 2025 11:16:46 +0900
Subject: [PATCH] docs: add example for reusing an existing collection (#32774)

Added a short section to the Weaviate integration docs showing how to
connect to an existing collection (reuse an index) with
`WeaviateVectorStore`. This helps clarify required parameters
(`index_name`, `text_key`) when loading a pre-existing store, which was
previously missing.

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### Description
Added a short section to the Weaviate integration docs showing how to
connect to an existing collection (reuse an index) with
`WeaviateVectorStore`. This helps clarify required parameters
(`index_name`, `text_key`) when loading a pre-existing store, which was
previously missing.

### Issue
Fixes langchain-ai/langchain-weaviate#197

### Dependencies
None
---
 .../docs/integrations/vectorstores/weaviate.ipynb | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/docs/docs/integrations/vectorstores/weaviate.ipynb b/docs/docs/integrations/vectorstores/weaviate.ipynb
index b3ee93ae34e..c1d43e00c8f 100644
--- a/docs/docs/integrations/vectorstores/weaviate.ipynb
+++ b/docs/docs/integrations/vectorstores/weaviate.ipynb
@@ -47,7 +47,20 @@
     "\n",
     "Some Weaviate instances, such as those running on WCS, have authentication enabled, such as API key and/or username+password authentication.\n",
     "\n",
-    "Read the [client authentication guide](https://weaviate.io/developers/weaviate/client-libraries/python#authentication) for more information, as well as the [in-depth authentication configuration page](https://weaviate.io/developers/weaviate/configuration/authentication)."
+    "Read the [client authentication guide](https://weaviate.io/developers/weaviate/client-libraries/python#authentication) for more information, as well as the [in-depth authentication configuration page](https://weaviate.io/developers/weaviate/configuration/authentication).\n",
+     "\n",
+    "### Connect to an existing collection (reuse an index)\n",
+    "If you already created a collection in your local Weaviate instance, you can connect to it directly:",
+    "\n",
+    "```python\n",
+    "from langchain_weaviate import WeaviateVectorStore\n",
+    "\n",
+    "store = WeaviateVectorStore(\n",
+    "    client=weaviate_client,\n",
+    "    index_name=\"Test\",\n",
+    "    text_key=\"text\",\n",
+    ")\n",
+    "```\n"
    ]
   },
   {