feat(chat): 打通场景对话与结果展示

apps/chat/forms.py

@@ -0,0 +1,30 @@
+from django import forms
+
+
+class ChatForm(forms.Form):
+    message = forms.CharField(
+        label="问题",
+        max_length=4000,
+        error_messages={
+            "required": "请输入要咨询的问题。",
+            "max_length": "问题过长，请控制在 4000 字以内。",
+        },
+        widget=forms.Textarea(attrs={"rows": 6}),
+    )
+    document_ids = forms.MultipleChoiceField(
+        label="文档范围",
+        required=False,
+        choices=(),
+        widget=forms.CheckboxSelectMultiple,
+        error_messages={"invalid_choice": "请选择当前场景下已入库的文档。"},
+    )
+
+    def __init__(self, *args, documents=None, **kwargs):
+        super().__init__(*args, **kwargs)
+        documents = documents or []
+        self.fields["document_ids"].choices = [
+            (str(document.id), document.original_name) for document in documents
+        ]
+
+    def clean_document_ids(self):
+        return [int(document_id) for document_id in self.cleaned_data.get("document_ids", [])]