Get empty retriever_resources parameter in API with /messages method

[lyc280705]

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Dify version

v1.0.0

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

In webpage there are retrieved resources:

In API and only with /messages method the list is empty, it works well with /chat-message method:

{
    "limit": 20,
    "has_more": false,
    "data": [
        {
            "id": "a87431be-ab19-4bb2-bc14-8e4d07bb489c",
            "conversation_id": "65e69008-a4d2-48f8-8d37-ee02c7cf46ec",
            "parent_message_id": "00000000-0000-0000-0000-000000000000",
            "inputs": {},
            "query": "什么是勾股定理",
            "answer": "勾股定理是一个基本的几何定理，它描述了直角三角形中三边之间的关系。具体来说，勾股定理指出：**在直角三角形中，两条直角边的平方和等于斜边的平方**。\n\n用数学公式表示就是：  \n$$\na^2 + b^2 = c^2\n$$\n其中，$a$ 和 $b$ 是直角三角形的两条直角边，$c$ 是斜边（即直角三角形中与直角相对的最长边）。\n\n---\n\n### **勾股定理的来源**\n在中国古代，直角三角形被称为“勾股形”，其中较短的直角边称为“勾”，较长的直角边称为“股”，斜边称为“弦”。因此，这个定理在中国也被称为“勾股定理”或“商高定理”。\n\n---\n\n### **勾股定理的几何意义**\n勾股定理揭示了直角三角形中三边之间的数量关系。它不仅是一个数学公式",
            "message_files": [],
            "feedback": null,
            "retriever_resources": [],         //null
            "created_at": 1740830044,
            "agent_thoughts": [],
            "status": "normal",
            "error": null
        }
    ]
}

✔️ Expected Behavior

Get a list of retrievered resources.

❌ Actual Behavior

Get empty list.

[dosubot[bot]]

I found a similar unsolved discussion regarding the issue of the API returning an empty retriever_resources parameter when using the /messages method ^[1]. Additionally, there is an open issue suggesting a solution:

1. Configuration Check: Ensure that the show_retrieve_source feature is enabled in your application's configuration. This feature controls whether retriever_resources are included in the response. If it's not enabled, the retriever_resources will not be included. This configuration is found in the app_config.additional_features of the application_generate_entity and is managed by the RetrievalResourceConfigManager class. You may need to check the configuration files or the backend code to ensure that the retriever_resource is enabled ^[2].

To continue talking to Dosu, mention @dosu.

---

^{Help Dosu learn! Give it feedback: Great Response | Irrelevant Answer | Incorrect Sources | Too Verbose | Hallucination | Bug Report | Other}

[lyc280705]

I can't find a solution in similar issues. Please don't close it with duplicated.

[lyc280705]

The same problem occurs in web app @crazywoola : New chat: Switch to other tab and switch back:

[lyc280705]

The same problem occurs in web app @crazywoola : New chat: Switch to other tab and switch back:

The bug also occurs on dify cloud

[crazywoola]

Will take a look at it later.

[lyc280705]

Any updates?@crazywoola

[kolagood]

The same bug I meet, which version will be resolved ? Thanks. @crazywoola

[crazywoola]

Haven't got time to fix this yet.

[cgk100]

It's a fatal question.

[liguochuan00]

I submitted a PR #17304

[2842902295]

I have the same problem

[LimitedLi]

I also met the same question that the 'retriever_resources' is null. And the feature control is enable

{ 'event': 'message', 'task_id': '15a26101-dae6-47d2-b8ac-d839070a1b79', 'id': '71fa8f8b-7246-47bc-bc34-17d484539ff8', 'message_id': '71fa8f8b-7246-47bc-bc34-17d484539ff8', 'conversation_id': '2a720c0c-ce66-48a7-8c8c-83ce17d69d6e', 'mode': 'advanced-chat', 'answer': "\n", 'metadata': { 'annotation_reply': None, 'retriever_resources': [], //null 'usage': {...} }, 'created_at': 1756712258 }