zan*_*nzu 3 python html5 jinja2 flask flask-wtforms
我正在尝试在我的wtforms.fields.html5.DecimalRangeField旁边显示滑块值.我当前的代码(下面的相关摘录)只渲染滑块,没有任何值.到目前为止我看到的所有示例都是纯HTML5代码,而且我缺乏使用jinja2模板作为起点的方法.
有什么建议？
从main.py中提取:
class MyForm(Form):
MyField = DecimalRangeField('Age', [validators.NumberRange(min=1, max=100)])
从form.html中提取
<div>{{ wtf.form_field(form.MyField) }}</div>
试试这个代码(要点):
from flask import Flask, render_template_string
from wtforms import Form
from wtforms.fields.html5 import DecimalRangeField
app = Flask(__name__)
app.config['DEBUG'] = True
TPL = '''
<!DOCTYPE html>
<html>
<head>
<script>
function outputUpdate(age) {
document.querySelector('#selected-age').value = age;
}
</script>
</head>
<body>
<form>
<p>
{{ form.age.label }}:
{{ form.age(min=0, max=100, oninput="outputUpdate(value)") }}
<output for="age" id="selected-age">{{ form.age.data }}</output>
</p>
</form>
</body>
</html>
'''
class TestForm(Form):
age = DecimalRangeField('Age', default=0)
@app.route("/")
def home():
form = TestForm(csrf_enabled=False)
return render_template_string(TPL, form=form)
if __name__ == "__main__":
app.run()