我正在尝试使用我的烧瓶后端来提取我的输入。但是,在我的html文件中,我使用javascript,这样我就可以动态排列我想要的任意数量的输入框。
<!DOCTYPE html>
<script>
function add_field()
{
var total_text=document.getElementsByClassName("input_text");
total_text=total_text.length+1;
document.getElementById("field_div").innerHTML=document.getElementById("field_div").innerHTML+
"<li id='input_text"+total_text+"_wrapper'><input type='text' class='input_text' id='input_text"+total_text+"' placeholder='Enter Text'></li>";
}
function remove_field()
{
var total_text=document.getElementsByClassName("input_text");
document.getElementById("input_text"+total_text.length+"_wrapper").remove();
}
</script>
{% extends "bootstrap/base.html" %}
{% block content %}
<div class = "container">
<h1>Give the words</h1>
<form action='/results' method="post">
<div id="wrapper">
<input type="button" value="Add TextBox" onclick="add_field();"><input type="button" value="Remove TextBox" onclick="remove_field();">
<ol id="field_div">
</ol>
</div>
<input type='submit' value='Select'>
</form>
</div>
{% endblock %}
我的views.py如下:
from flask import render_template, request
from app import app
from .translit import *
@app.route('/')
def search():
return render_template('index.html')
@app.route('/results', methods=['POST'])
def results():
words = getwds(request.form['input_text1'])
return render_template('results.html', words=words)
答案 0 :(得分:2)
输入元素的name
属性中的方括号语法将表单输入转换为数组。因此,当您使用name="input_text[]"
时,您将获得一个数组。可以使用request.form.getlist
方法在Flask路由中处理此数组。让我们看看这一点。
app.py
:
from flask import Flask, render_template, url_for, request
app = Flask(__name__)
@app.route('/')
def search():
return render_template('dynamic_input.html')
@app.route('/results', methods = ['GET', 'POST'])
def results():
if request.method == 'GET':
return redirect(url_for('/'))
else:
values = request.form.getlist('input_text[]')
return render_template('dynamic_input_results.html',
values = values)
if __name__ == '__main__':
app.run(debug = True)
dynamic_input.html
包含:
<!DOCTYPE html>
<script>
function add_field()
{
var total_text=document.getElementsByClassName("input_text");
total_text=total_text.length+1;
field_div = document.getElementById("field_div");
new_input = "<li id='input_text"+total_text+
"_wrapper'><input type='text' class='input_text' name='input_text[]' id='input_text"+
total_text+"' placeholder='Enter Text'></li>";
field_div.insertAdjacentHTML('beforeend',new_input);
}
function remove_field()
{
var total_text=document.getElementsByClassName("input_text");
document.getElementById("input_text"+total_text.length+"_wrapper").remove();
}
</script>
<div class = "container">
<h1>Give the words</h1>
<form action='/results' method="post">
<div id="wrapper">
<input type="button" value="Add TextBox" onclick="add_field();">
<input type="button" value="Remove TextBox" onclick="remove_field();">
<ol id="field_div">
</ol>
</div>
<input type='submit' value='Select'>
</form>
</div>
dynamic_input_results.html
包含:
<ul>
{% for value in values %}
<li>{{value}}</li>
{% endfor %}
</ul>
<强>输出强>
图1:动态输入元素
图2:结果在提交上一个表单后显示为列表
<强> N.B:强>
我修改了你的JS代码,以防止在添加新文本框后覆盖文本输入值。
<强>更新强>
为每个文本框添加了复选框。
app.py
:
from flask import Flask, render_template, url_for, request
app = Flask(__name__)
@app.route('/')
def search():
return render_template('dynamic_input.html')
@app.route('/results', methods = ['GET', 'POST'])
def results():
if request.method == 'GET':
return redirect(url_for('search'))
else:
input_values = request.form.getlist('input_text[]')
checkbox_values = request.form.getlist('input_checkbox')
return render_template('dynamic_input_results.html',
input_values = input_values,
checkbox_values = checkbox_values)
if __name__ == '__main__':
app.run(debug = True)
dynamic_input.html
:
<!DOCTYPE html>
<script>
function add_field()
{
var total_text=document.getElementsByClassName("input_text");
total_text=total_text.length+1;
field_div = document.getElementById("field_div");
new_input = "<li id='input_text"+total_text+"_wrapper'>";
new_input += "<input type='text' class='input_text' name='input_text[]' id='input_text"+
total_text+"' placeholder='Enter Text'>";
new_input += "<input type='checkbox' name='input_checkbox' value='"+total_text+"' id='input_checkbox"+
total_text+"'";
new_input += "</li>";
field_div.insertAdjacentHTML('beforeend',new_input);
}
function remove_field()
{
var total_text=document.getElementsByClassName("input_text");
document.getElementById("input_text"+total_text.length+"_wrapper").remove();
}
</script>
<div class = "container">
<h1>Give the words</h1>
<form action='/results' method="post">
<div id="wrapper">
<input type="button" value="Add TextBox" onclick="add_field();">
<input type="button" value="Remove TextBox" onclick="remove_field();">
<ol id="field_div">
</ol>
</div>
<input type='submit' value='Select'>
</form>
</div>
dynamic_input_results.html
:
<ul>
{% for value in input_values %}
<li>{{value}}</li>
{% endfor %}
<hr>
{% for value in checkbox_values %}
<li>{{value}}</li>
{% endfor %}
</ul>
输出: