如何预填充 Django ModelForm 字段

How to pre-populate Django ModelForm fields

我有以下模型:

class IssueProcessForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(IssueProcessForm, self).__init__(*args, **kwargs)

        self.fields['number'].disabled = True
        self.fields['title'].disabled = True
        self.fields['body'].disabled = True

        self.fields['body'].widget = forms.Textarea(
            attrs={
                'cols': 50
            }
        )

    class Meta:
        model = Issue
        fields = (
            'number', 'title', 'body', 'price'
        )

我想用视图中的数据预填充字段 numbertitlebody,呈现表单,并确保值与字段对应显示同时也禁用这些字段,以便用户不会更改值。我希望 price 字段是用户触摸的唯一内容,当单击保存按钮时,我希望所有内容都保存到数据库中。我尝试了以下方法:

def issue_process(request, repo_name, issue_number):
    get_issue_number = request.session.get('issue_number_{}'.format(issue_number))
    get_issue_title = request.session.get('issue_number_{}_title'.format(issue_number))
    get_issue_body = request.session.get('issue_number_{}_body'.format(issue_number))

    if request.method == 'POST':
        form = IssueProcessForm(request.POST)
        if form.is_valid():
            issue = form.save(commit=False)
            issue.number = get_issue_number
            issue.title = get_issue_title
            issue.body = get_issue_body
            issue.save()
    else:
        form = IssueProcessForm(initial={
            'number': get_issue_number,
            'title': get_issue_title,
            'body': get_issue_body
        })
    return render(request, 'core/issue_process.html', {'form': form})

...但是当我尝试提交时,三个字段中的每一个都一直显示 this field is required。请问我该怎么办?请注意 get_issue_numberget_issue_titleget_issue_body 是我想预填充字段 numbertitle 和 [=14= 的值]分别与

禁用表单域后,浏览器不会在您提交表单时提交该域的值。因此,您需要为 POST 请求和 GET 请求提供初始数据:

if request.method == 'POST':
    form = IssueProcessForm(
        request.POST,
        initial={
            'number': get_issue_number,
            'title': get_issue_title,
            'body': get_issue_body
        },
    )
    ...