Question

I am new to Django. Now I have class defined below

PROPERTY_TYPE_CHOICE = [[ 1 ,  Fixed (TODO) ],
                    [ 2 ,  Trajectory (TODO) ],
                    [ 3 ,  Error_Detecting ],
                    [ 4 ,  Error_Correcting ]]
FIXED_TYPE_CHOICE = [[ 1 ,  Prefix ,
                       2 ,  Suffix ]]

class UploadFileForm(forms.Form):
    # title = forms.CharField(max_length=50)
    automata_file  = forms.FileField(required = True)
    transducer_file = forms.FileField(required = True)
    property_type = forms.ChoiceField(choices=PROPERTY_TYPE_CHOICE,
                                      required=True)
    fixed_type = forms.ChoiceField(choices=FIXED_TYPE_CHOICE,
                                   required=True)
    debug_output = forms.BooleanField(required=False)

我有一个Property_TYPE_CHOICE 展示在前面的 html

<div class="fieldWrapper">
    {{ form.property_type.errors }}
    <label for="id_a">Select <u>a type</u> of property:</label>
    {{ form.property_type }}
</div>

and I want to show the FIXED_TYPE_CHOICE if I choose the first choice "Fixed (TODO)" in the PROPERTY_TYPE_CHOICE. I read the docs about Django, and I think it may be implemented in this way:

<div class="fieldWrapper">
    {{ form.property_type.errors }}
    <label for="id_a">Select <u>a type</u> of property:</label>
    {{ form.property_type }}
</div>
{% if form.property_type== 1  %}
    <div class="fieldWrapper">
        {{ form.fixed_type.errors }}
        <label for="id_a">Select <u>a fixed type</u> of property:</label>
    {   { form.fixed_type }}
    </div>
{% endif %}

But I can t do that. What should I do? Thank you.

Answer 1

form.property_type type is a BoundForm 对象, 如果您想要访问它的值, 您需要使用 form. property_ type. value 。

这就是为什么你比较

详情见此页 ,在表格模板自定义部分下方大约2/3。

要更新时不更新页面, 您需要以下的 Javascript (请确定您也包含 jQuery 库( http:// jquery. com/ ) :

$("#property_type").change (function() {
    if($(this).val() ==  1 ) {
        $("#fixed_type").show();
    } else {
        $("#fixed_type").hide();
    }
} )

确保给相应的 id 属性 ( < code> id=" property_ type" ) 等给予相应的下拉属性。

友情链接