[英]Conditional Flask-WTF Forms Fields
I would like to include or excluded form fields depending on the category they selected. 我想根据选择的类别包括或排除表单字段。
One way i was thinking of doing is like this. 我想做的一种方式就是这样。
if form.category.data == "retail":
# return "Retail Form"
form = RetailListingForm()
return render_template('seller/seller_new_listing.html', form=form)
if form.category.data == "wholesale":
# Return Wholesale
form = WholeSaleListingForm()
return render_template('seller/seller_new_listing.html', form=form)
if form.category.data == "wholesale-and-retail":
# Return Both forms by inheritance
return render_template('seller/seller_new_listing.html', form=form)
In the html. 在html中。
{% if form == WholeSaleListingForm %}
{{render_field(form.whole_sale_price)}}
{% endif %}
This does not work because if its not a whole sale form the whole_sale_price
errors and the RetailListingForm
How would you recommended i include forms while having it all in one template. 这是行不通的,因为如果它不是一个完整的销售表单, whole_sale_price
出现whole_sale_price
错误和RetailListingForm
,您将如何建议我在一个模板中全部包含表单的同时包含表单。
You could add another variable that handles your form selection type, and then pass it into the render_template
function: 您可以添加另一个处理表单选择类型的变量,然后将其传递给render_template
函数:
if form.category.data == "retail":
# return "Retail Form"
type = 'retail'
form = RetailListingForm()
return render_template('seller/seller_new_listing.html', form=form, type=type)
elif form.category.data == "wholesale":
# Return Wholesale
type = 'wholesale'
form = WholeSaleListingForm()
return render_template('seller/seller_new_listing.html', form=form, type=type)
elif form.category.data == "wholesale-and-retail":
# Return Both forms by inheritance
return render_template('seller/seller_new_listing.html', form=form, type=None)
Then, in your template, just use evaluate with type
: 然后,在您的模板中,只需将评估与type
配合使用:
{% if type == 'wholesale' %}
{{ render_field(form.whole_sale_price) }}
{% endif %}
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