医疗专家系统诊断结果无法传递至浏览器问题求助

问题描述 #

我正在开发一个医疗专家系统项目，目前遇到的问题是系统无法将诊断结果传递至浏览器。用户能从症状列表中选择症状，已实现通过JavaScript在“Selected Symptoms”标题下显示选中的症状，但点击诊断按钮后，系统无任何结果返回，页面表现如同刷新。

相关代码 #

forms.py #

class SymptomForm(forms.Form):
    symptoms = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple)

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields['symptoms'].choices = self.get_symptoms_choices()

    def get_symptoms_choices(self):
        symptoms = Symptom.objects.order_by('name').values_list('name', flat=True)
        return [(symptom, symptom) for symptom in symptoms]

模型代码（models.py） #

from django.db import models

class Symptom(models.Model):
    name = models.CharField(max_length=100)

    def __str__(self):
        return self.name

诊断功能视图代码（views.py） #

from django.shortcuts import render
from .models import Symptom
from .forms import SymptomForm
from django.contrib.auth.decorators import login_required
import pickle

@login_required
def diagnosis(request):
    with open('diagnosis/ml_model.sav', 'rb') as f:
        model = pickle.load(f)
    symptoms = Symptom.objects.order_by('name').values_list('name', flat=True)
    form = SymptomForm()
    if request.method == 'POST':
        form = SymptomForm(request.POST)
        if form.is_valid():
            selected_symptoms = form.cleaned_data.get('symptoms')
            feature_vector = [1 if symptom in selected_symptoms else 0 for symptom in symptoms]

            #make prediction
            diagnose = model.predict([feature_vector])[0]

            #Display result
            context = {'diagnose':diagnose, 'selected_symptoms':selected_symptoms}
            return render(request, 'pages/diagnosis.html', context)
        else:
            form = SymptomForm()
        form.fields['symptoms'].choices=[(symptom,symptom) for symptom in symptoms]
    context = {'form':form}
    return render(request, 'pages/diagnosis.html', context)

诊断页面截图 #

内容的提问来源于stack exchange，提问作者sjr_dlomo