[英]How to get a Python dict into an HTML template using Flask/Jinja2
[英]How can I call a python function on the Flask server using a Jinja2 html template?
我最近開始學習使用 Flask 框架。 但是,當在 html 模板中單擊按鈕時,我對如何從 main.py 調用函數“sign_in_check”感到有些困惑。 在 Django 中,它就像<form action = "{{% url 'sign_in_check' %}}>
。但是,如果我嘗試用 Flask 做同樣的事情,它會返回一個錯誤。我一直在用谷歌搜索解決方案沒運氣。這是我的代碼,我知道flask具有更好的內置登錄功能,但是我仍然需要知道如何從模板調用函數,因為我還有其他頁面需要運行python函數。
主文件
from flask import Flask, render_template, request, current_app
from flask_socketio import SocketIO, send
app = Flask(__name__)
app.config['SECRET_KEY'] = 'mysecret'
socketio = SocketIO(app)
@app.route('/')
def sign_in():
return render_template('sign_in.html', sign_in_check_func = sign_in_check)
@app.route('/sign_in_check')
def sign_in_check():
print("In Sign In Check")
if request.method == "POST":
driver_first_name = request.POST.get('driver_first_name', '')
driver_last_name = request.POST.get('driver_last_name', '')
driver_WWID = request.POST.get('driver_WWID', '')
co_driver_first_name = request.POST.get('co_driver_first_name', '')
co_driver_first_name = request.POST.get('co_driver_last_name', '')
co_driver_WWID = request.POST.get('co_driver_WWID', '')
car_number = request.POST.get('car_number', '')
c = {'driver_first_name':driver_first_name, 'driver_last_name':driver_last_name,
'driver_WWID':driver_WWID, 'co_driver_first_name':co_driver_first_name,
'co_driver_last_name':co_driver_last_name, 'co_driver_WWID':co_driver_WWID,}
if driver_first_name != "" and driver_last_name != "" and driver_WWID != "" and co_driver_first_name != "" and co_driver_last_name != "" and co_driver_WWID != "":
return render_template('pre_drive_inspection.html')
return render_template('sign_in.html')
登錄.html
<!DOCTYPE html>
{% extends "base.html" %}
{% block main_content %}
<html>
<link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='css/sign_in.css') }}">
<body>
<div id="driver_info">
<li>
<label for="driver_first_name">Driver First Name:</label>
<input type="text" name="driver_first_name" value="{{driver_first_name }}" id="driver_first_name">
</li>
<li>
<label for="driver_last_name">Driver Last Name:</label>
<input type="text" name="driver_last_name" value = "{{driver_last_name }}" id="driver_last_name">
</li>
<li>
<label for="driver_wwid">Driver WWID:</label>
<input type="text" name="driver_WWID" value="{{driver_WWID }}" id="driver_WWID" maxlength="8"
onkeypress="return (event.charCode == 8 || event.charCode == 0) ? null : event.charCode >= 48 && event.charCode <= 57">
</li>
</div>
<div id="co-driver_info" >
<li>
<label for="co_driver_first_name">CO-Driver First Name:</label>
<input type="text" name="co_driver_first_name" value="{{co_driver_first_name }}" id="co_driver_first_name">
</li>
<li>
<label for="co_driver_last_name">CO-Driver Last Name:</label>
<input type="text" name="co_driver_last_name" value="{{ co_driver_last_name }}" id="co_driver_last_name">
</li>
<li>
<label for="co_driver_wwid">CO-Driver WWID:</label>
<input type="text" name="co_driver_WWID" value="{{ co_driver_WWID }}" id="co_driver_WWID" maxlength="8"
onkeypress="return (event.charCode == 8 || event.charCode == 0) ? null : event.charCode >= 48 && event.charCode <= 57">
</li>
</div>
<div id="car_number">
<li>
<label for="car_number">Car Number:</label>
<input type="text" name="car_number" value="{{ car_number }}" id="co_driver_WWID" maxlength="4"
onkeypress="return (event.charCode == 8 || event.charCode == 0) ? null : event.charCode >= 48 && event.charCode <= 57"> </li>
</li>
</div>
<button action="{{% url_for('sign_in_check') %}}" method="post" value = "{{ csrf_token }}">
<div id="button">
<li>
<input type="submit" value="Continue">
</li>
</div>
</button>
</body>
</html>
{% endblock %}
這是一個 HTML 問題。
按鈕沒有動作。 按鈕屬於表單,表單有一個 action 屬性。
<form action="{{% url_for('sign_in_check') %}}" method="post">
<input type="hidden" value = "{{ csrf_token }}">
<div id="driver_info">
<li>
<label for="driver_first_name">Driver First Name:</label>
<input type="text" name="driver_first_name" value="{{driver_first_name }}" id="driver_first_name">
</li>
...
</div>
<div id="button">
<li>
<input type="submit" value="Continue">
</li>
</div>
</form>
請注意,您的 HTML 也有很多其他問題。 例如,你不能在div后面有body
元素; 該 div 屬於正文。 並且li
元素必須進入ul
元素(或ol
)。
此外,您的父“base.html”模板應該提供基本的頁面結構,包括 HTML 聲明、 head
和body
元素; 您的子模板應該簡單地填充主體內部的空間。
經過更多的谷歌搜索,我想通了。 如果有人好奇,我接受了丹尼爾的建議並重組了 html。 然而,這並沒有完全解決它。 動作語法是:
<form action='/sign_in_check' method="POST">
然后服務器像這樣處理它:
@app.route('/sign_in_check', methods = ['GET', 'POST'])
def sign_in_check():
if request.method == 'POST':
我必須確保該函數接受 POST 或 GET。 此外,與 django 不同,flask 的請求語法有點不同。 像這樣,
driver_first_name = request.form.get('driver_first_name')
希望這可以幫助其他遇到類似問題的人。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.