Question

所以这是我的表格类：

exchangeNames=["one","two","three"]
class addExchange_All(Form):

apis={}
secrets={}

for exchangeName in exchangesNames:

    apis[exchangeName+"_api"] = TextField(
                    description=('Enter %s Api Key:', exchangeName))

    secrets[exchangeName+'_secret'] = TextField(validators=[RequiredIf(exchangeName+'_api')],
                description=('Enter %s Api Key:', exchangeName))


submit = SubmitField('Update Exchange Credentials')

这是我的路线功能：

@account.route('/manage/exchanges', methods=['POST', 'GET'])
def exchanges():
    form=addExchange_All()
    return render_template('/account/exchanges.html', form=form)

我正在尝试渲染exchanges.html中的所有字段，如下所示：

            <div class="two fields">   

           {%for a in form.apis%}
           {{f.render_form_field(a)}}
           {%endfor%}
           {%for a in form.secrets%}
           {{f.render_form_field(a)}}
           {%endfor%}

        </div>

这里是render_form_field宏：

{# Render a field for the form #}
{% macro render_form_field(field, extra_classes='') %}
{% if field.type == 'Radio Field' %}
    {% set extra_classes = extra_classes + ' grouped fields' %}
{% endif %}
<div class="field {% if field.errors %}error{% endif %} {{ 
extra_classes }}">
    {{ render_form_input(field) }}
    {% if field.errors %}
        <div class="ui red pointing label">
            {{ field.errors[0] | safe }}
        </div>
    {% endif %}
</div>
{% endmacro %}

模板渲染没有错误，但没有渲染文本字段。我尝试了几种不同的解决方案，比如将它们保存到locals（）但似乎没有任何效果。帮助

Answer 1

我不确定这是不是答案，我没有时间检查它，所以如果有人能纠正我并且我会学到一些东西，我很高兴。

无论如何，我构建动态表单的方法是不使用dicts，并以下列方式将每个项目作为一个单独的元素作为类属性：

def create_dynamic_form():
    class addExchange_All(Form):
        submit = SubmitField('Update Exchange Credentials')
        pass

    for exchangeName in ["One","Two","Three"]:
        setattr(addExchange_All, exchangeName+"_api", TextField(
            description=('Enter '+exchangeName+' Api Key:')))
        setattr(addExchange_All, exchangeName+'_secret', TextField(
            validators=[RequiredIf(exchangeName+'_api')],
            description=('Enter '+exchangeName+' Api Key:')))

    return addExchange_All()

然后使用：

form=create_dynamic_form() # instead of addExchange_All()

Flask-Python：在for循环中生成TextFields并使用wtfForms在jinja中渲染

1 个答案: