在Django中比较两个模型并在第三个模型中显示答案,可以通过以下步骤实现:
下面是一个示例代码:
# models.py
from django.db import models
class ModelA(models.Model):
field1 = models.CharField(max_length=100)
field2 = models.IntegerField()
class ModelB(models.Model):
field1 = models.CharField(max_length=100)
field2 = models.IntegerField()
class ModelC(models.Model):
field1 = models.CharField(max_length=100)
field2 = models.IntegerField()
comparison_result = models.CharField(max_length=100)
# views.py
from django.shortcuts import render
from .models import ModelA, ModelB, ModelC
def compare_models(request):
model_a = ModelA.objects.get(pk=1) # 获取ModelA的实例对象
model_b = ModelB.objects.get(pk=1) # 获取ModelB的实例对象
# 比较字段值
if model_a.field1 == model_b.field1 and model_a.field2 == model_b.field2:
comparison_result = "Fields are equal"
else:
comparison_result = "Fields are not equal"
# 创建ModelC的实例对象并保存比较结果
model_c = ModelC(field1=model_a.field1, field2=model_a.field2, comparison_result=comparison_result)
model_c.save()
return render(request, 'compare.html', {'model_c': model_c})
# compare.html
<h1>Comparison Result:</h1>
<p>Field 1: {{ model_c.field1 }}</p>
<p>Field 2: {{ model_c.field2 }}</p>
<p>Comparison Result: {{ model_c.comparison_result }}</p>
这样,当访问compare_models视图时,会比较ModelA和ModelB的字段值,并将比较结果存储到ModelC中,最后在模板中显示比较结果。
请注意,以上代码仅为示例,实际应用中可能需要根据具体需求进行适当修改。
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