Question

当我加载文本时，我希望文本已经在我的表单中，我认为这样做的一个好方法是添加一个值属性。然而它很棘手，因为我使用django形式，事后生成html。所以这是我在模板中显示表单的相关部分：

<form role="form" action="/editfeedback/{{feedback.id}}/{{board}}/" method="post">
    {% csrf_token %}
    {% for field in form %}
        {% if field.name == "title" %}
            <div class="form-group">
                <label class="col-sm-2 control-label" for="id_{{ field.name }}">{{ field.label }}</label>
                <div class="col-sm-10">
                    {{ field|attr:"value:THIS IS THE TITLE" }}
                </div>
            </div>
        {% elif field.name == "body" %}
            <div class="form-group">
                <label class="col-sm-2 control-label" for="id_{{ field.name }}">{{ field.label }}</label>
                <div class="col-sm-10">
                    {{ field|attr:"value:THIS IS THE BODY" }}
                </div>
            </div>
        {% else %}
            <div class="form-group">
            <label class="col-sm-2 control-label" for="id_{{ field.name }}">{{ field.label }}</label>
                <div class="col-sm-10">
                    {{ field|attr:"value:tag" }}
                </div>
            </div>
        {% endif %}
    {% endfor %}
    <div class="form-group">
        <div class="col-sm-offset-2 col-sm-10">
            <button type="submit" class="btn btn-primary" value="Save">{% trans "Save" %}</button><br>
        </div>
    </div>
</form>

这适用于显示预定的文字，但我有一个帖子列表，每个帖子都附有一个编辑表格。我的问题是：有没有办法将字段值属性设置为django变量？我尝试了{{ field|attr:"value:{{post.title}}" }}但是这给了我以下错误：

TemplateSyntaxError

attr需要2个参数，1提供

编辑：从forms.py添加EditFeedbackForm，从views.py添加edit_feedback视图

class EditFeedbackForm(forms.Form):
    title = forms.CharField(label='Title', widget=forms.TextInput(attrs={'class':'form-control'}))
    body = forms.CharField(label='Body', widget=forms.Textarea(attrs={'class':'form-control'}))
    tags = forms.CharField(label='Tags', widget=forms.TextInput(attrs={'class':'form-control'}))

我的观点：

@login_required
def edit_feedback(request, feedback_id, board):
    boardObj = Board.objects.get(board_name=board)
    post = Feedback.objects.get(id=feedback_id)
    form = EditFeedbackForm(initial={'title': post.feedback_title, 'body': post.feedback_description})
    if request.method == 'POST':
        form = EditFeedbackForm(request.POST)
        if form.is_valid():
            title = form.cleaned_data['title']
            body = form.cleaned_data['body']
            tags = form.cleaned_data['tags']
            post.feedback_title = title
            post.feedback_description = body
            post.feedback_last_modified = datetime.now()
            post.save(update_fields=['feedback_title', 'feedback_description', 'feedback_last_modified'])
            # print "saved feedback " + str(post.id)
    else:
        form = EditFeedbackForm()
    return redirect('/board/' + board + '/')

Answer 1

在您的视图中，初始化表单时，您可以指定初始值：

form = WhatsYourFormsClass(initial={'field1': value1, 'field2': value2})

修改您正确初始化具有初始值的表单：

(...) form = EditFeedbackForm(initial={'title': post.feedback_title, 'body': post.feedback_description}) if (...)

然后传递另一个（空）实例：

(...) else form = EditFeedbackForm() return (...)

你的方法应该是这样的：

@login_required def edit_feedback(request, feedback_id, board): boardObj = Board.objects.get(board_name=board) post = Feedback.objects.get(id=feedback_id) if request.method == 'POST': form = EditFeedbackForm(request.POST) (form processing) (if processing went OK, redirect to your chosen view) else: form = EditFeedbackForm(initial={'title': post.feedback_title, 'body': post.feedback_description}) return render(**your form template name here**, {'form': form})

将django变量显示为表单字段的value属性

1 个答案: