/chat-messages (service api) `files` parameter transfer_method to add `tool file` type

[wow-ww]

Self Checks

• [X] I have searched for existing issues search for existing issues, including closed ones.
• [X] I confirm that I am using English to submit this report (我已阅读并同意 Language Policy).
• [X] [FOR CHINESE USERS] 请务必使用英文提交 Issue，否则会被关闭。谢谢！:）
• [X] Please do not modify this template :) and fill in all the required fields.

1. Is this request related to a challenge you're experiencing? Tell me about your story.

In chatworkflow, I use advanced-tool-integration to return images. I hope to pass these images to another chatflow through api /chat-messages.So,I hope support /chat-messages (service api) files parameter transfer_method to tool file type.

2. Additional context or comments

No response

3. Can you help us with this feature?

• [X] I am interested in contributing to this feature.

[dosubot[bot]]

Hi, @wow-ww. I'm Dosu, and I'm helping the Dify team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• Enhancement request for /chat-messages API to include a files parameter.
• Proposed transfer_method for handling tool file types.
• Aimed at enabling image transfer in chat workflows.
• You expressed interest in contributing to this feature.
• No further comments or activity since the initial request.

Next Steps:

• Please confirm if this issue is still relevant to the latest version of Dify by commenting here.
• If there is no response, the issue will be automatically closed in 15 days.

Thank you for your understanding and contribution!

[wow-ww]

Hi, @wow-ww. I'm Dosu, and I'm helping the Dify team manage their backlog. I'm marking this issue as stale.嗨，。我是 Dosu，我在帮助 Dify 团队管理他们的待办事项。我将这个问题标记为过时。

Issue Summary:  问题摘要：

• Enhancement request for /chat-messages API to include a files parameter.增强请求，为 /chat-messages API 添加 files 参数。
• Proposed transfer_method for handling tool file types.建议为处理 tool file 类型使用 transfer_method 。
• Aimed at enabling image transfer in chat workflows.旨在实现聊天流程中的图像传输。
• You expressed interest in contributing to this feature.您表示有兴趣为此功能做出贡献。
• No further comments or activity since the initial request.自初始请求以来，无进一步评论或活动。

Next Steps:  下一步：

• Please confirm if this issue is still relevant to the latest version of Dify by commenting here.请在此处评论确认此问题是否仍适用于 Dify 的最新版本。
• If there is no response, the issue will be automatically closed in 15 days.如果没有响应，问题将在 15 天后自动关闭。

Thank you for your understanding and contribution!感谢您的理解与贡献！

@dosubot this issue is still relevant to the latest version of Dify.

[dosubot[bot]]

@takatost, the user @wow-ww has confirmed that this issue regarding the enhancement request for the /chat-messages API to include a files parameter is still relevant to the latest version of Dify. Could you please assist them with this?

[wow-ww]

@takatost, the user @wow-ww has confirmed that this issue regarding the enhancement request for the /chat-messages API to include a files parameter is still relevant to the latest version of Dify. Could you please assist them with this?

my solution api\core\app\apps\advanced_chat\app_generator.py

def generate():
        ……
        # parse files
        files = args["files"] if args.get("files") else []
        file_extra_config = FileUploadConfigManager.convert(
            workflow.features_dict, is_vision=False)
        # modify config，add tool_file transfermethod
        if file_extra_config and file_extra_config.image_config:
            if file_factory.FileTransferMethod.TOOL_FILE not in file_extra_config.image_config.transfer_methods:
                file_extra_config.image_config.transfer_methods.append(
                    file_factory.FileTransferMethod.TOOL_FILE)
        if file_extra_config:
            file_objs = file_factory.build_from_mappings(
                mappings=files,
                tenant_id=app_model.tenant_id,
                config=file_extra_config,
            )
        else:
            file_objs = []

And api\factories\file_factory.py

def build_from_message_file(
    *,
    message_file: "MessageFile",
    tenant_id: str,
    config: FileUploadConfig,
):
    # memory mode add tool file transfer_method
    if message_file.transfer_method == FileTransferMethod.TOOL_FILE:
        mapping = {
            "transfer_method": message_file.transfer_method,
            "tool_file_id": message_file.upload_file_id,
            "type": message_file.type,
        }
        if FileTransferMethod.TOOL_FILE not in config.image_config.transfer_methods:
            config.image_config.transfer_methods.append(
                FileTransferMethod.TOOL_FILE)
    else:
        mapping = {
            "transfer_method": message_file.transfer_method,
            "url": message_file.url,
            "id": message_file.id,
            "type": message_file.type,
            "upload_file_id": message_file.upload_file_id,
        }
    return build_from_mapping(
        mapping=mapping,
        tenant_id=tenant_id,
        config=config,
    )

[dosubot[bot]]

Hey @wow-ww! It looks like you're diving into some feature requests and enhancements for the Dify API. While I can help with bugs, technical questions, and engineering knowledge, I'm not equipped to handle feature requests or manage backlog issues. If you think I should be able to help with this, feel free to reach out to the Dosu Team. They'll be happy to hear your thoughts! 😊

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}