我已经搜索过这个问题，但由于之前有很多问题被问到，所以无法得到正确答案。
我正在为多个图像字段使用具有多个字段和其他模型（具有帖子模型的外键）的帖子模型。我想更新我创建的帖子。
这是我的views.py for update_post
def update_post(request, post_id):
ImageFormSet = modelformset_factory(PostPicture, form=AddPictures, extra=10, min_num=1)
post_form = get_object_or_404(Posts, pk=post_id)
if request.method == "POST":
form = AddFile(request.POST, instance=post_form)
formset = ImageFormSet(queryset=PostPicture.objects.filter(post=post_id))
if form.is_valid() and formset.is_valid():
form.save()
formset.save()
for form in formset:
if form:
image = form['image']
photo = PostPicture(post=form, image=image)
photo.save()
messages.success(request, 'Post updated Successfully!')
return render(request, 'vehicles_app/update_post.html',
{
'form': form,
'formset': formset,
'post_form': post_form,
'post_id': post_id,
})
else:
print(form.errors, formset.errors)
else:
form = AddFile()
formset = ImageFormSet(queryset=PostPicture.objects.none())
return render(request, 'vehicles_app/update_post.html', {'form':
form, 'formset': formset, 'post_form':post_form, 'post_id': post_id})
这是我的update_post.html
<form id="post_form" method="post" action="{% url
'vehicles_app:update_post' post_id %}"
enctype="multipart/form-data">
{% csrf_token %}
<div class="row">
<div class="form-group">
<div style="float: left; width: 50%">
<label for="title">Ad Title</label>
</div>
<div class="title" style="float: right; width: 45%">
<input type="text" name="title" placeholder="Type Here"
value='{{ form.initial.title }}' required>
</div>
</div>
<br>
<div class="form-group">
<div style="float: left; width: 50%">
<label for="city">City</label>
</div>
<div class="city" style="float: right; width: 45%">
<select name="city" value='{{ form.initial.city }}'>
<option selected="selected"
value="islamabad">Islamabad</option>
<option value="karachi">Karachi</option>
<option value="lahore">Lahore</option>
<option value="peshawar">Peshawar</option>
<option value="quetta">Quetta</option>
<option value="multan">Multan</option>
<option value="faisalabad">Faisalabad</option>
</select>
</div>
</div>
<br>
<div class="form-group">
<div style="float: left; width: 50%">
<label for="price">Price</label>
</div>
<div class="price" style="float: right; width: 45%">
<input type="text" name="price" placeholder="Type Here"
value='{{ form.initial.price }}' required>
</div>
</div>
<br>
<div class="form-group">
<div style="float: left; width: 50%">
<label for="brand">Brand</label>
</div>
<div class="brand" style="float: right; width: 45%">
<select name="brand" value='{{ form.initial.brand }}'>
<option selected="selected"
value="honda">Honda</option>
<option value="audi">Audi</option>
<option value="bmw">BMW</option>
<option value="suzuki">Suzuki</option>
<option value="toyota">Toyota</option>
<option value="lexus">Lexus</option>
<option value="hyundai">Hyundai</option>
<option value="jeep">Jeep</option>
<option value="mazda">Mazda</option>
<option value="mitsubishi">Mitsubishi</option>
<option value="daewoo">Daewoo</option>
</select>
</div>
</div>
<br>
<div class="form-group">
<div style="float: left; width: 50%">
<label for="modelyear">Model-Year</label>
</div>
<div class="modelyear" style="float: right; width: 45%">
<input type="text" name="modelyear"
placeholder="ie:1970-2018" value='{{
form.initial.modelyear }}' required>
</div>
</div>
<br>
<div class="form-group">
<div style="float: left; width: 50%">
<label for="condition">Condition</label>
</div>
<div class="condition" style="float: right; width: 45%">
<select name="condition" value='{{ form.initial.condition
}}'>
<option selected="selected" value="new">NEW</option>
<option value="used">USED</option>
</select>
</div>
</div>
<br>
<div class="form-group">
<div style="float: left; width: 50%">
<label for="mileage">Mileage</label>
</div>
<div class=mileage style="float: right; width: 45%">
<input type="text" name="mileage" placeholder="ie:50000"
value='{{ form.initial.mileage }}' required>
</div>
</div>
</div>
<br>
<div class="form-group">
<div style="float: left; width: 50%">
<label for="details">Type details here</label>
</div>
<div class="details" style="float: right; width: 45%">
<textarea name="details" rows="9" cols="45" value='{{
form.initial.details }}' required></textarea>
</div>
</div>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
{{ formset.management_form }}
{% if formset %}
{% for form in formset %}
{% if form %}
<table class="display" cellspacing="1" width="100%">
<tr>
<td>{{ form }}</td>
</tr>
</table>
{% endif %}
{% endfor %}
{% endif %}
<input type="submit" name="submit" value="Update"
class="btn btn-info" id="post_btn">
<input type=button class="btn btn-default" value="Cancel"
onClick="javascript:history.go(-1);">
</form>