示例表格:
Items in random order</br>
<form method="POST">
<input name="item4" value="val4"/></br>
<input name="item2" value="val2"/></br>
<input name="item1" value="val1"/></br>
<input name="item3" value="val3"/></br>
<button type="submit">OK</button>
</form>
request.form
行为类似于字典,您可以使用它request.form.items()
来获取所有键和值并过滤它们。
for key, val in request.form.items():
#print(key,val)
if key.startswith("item"):
print(key, val)
或request.form.keys()
仅获取对它们进行过滤和排序的键。
keys = request.form.keys()
keys = [key for key in keys if key.startswith("item")]
keys = sorted(keys)
for key in keys:
#print(key, request.form[key])
print(key, request.form.get(key))
最小的工作代码:
from flask import Flask, request, render_template_string
app = Flask(__name__)
@app.route('/', methods=['GET', 'POST'])
def index():
if request.method == 'POST':
print('--- original order ---')
for key, val in request.form.items():
if key.startswith("item"):
print(key, val)
print('--- sorted ---')
keys = request.form.keys()
keys = [key for key in keys if key.startswith("item")]
keys = sorted(keys)
for key in keys:
#print(key, request.form[key])
print(key, request.form.get(key))
return render_template_string('''Items in random order</br>
<form method="POST">
<input name="item4" value="val4"/></br>
<input name="item2" value="val2"/></br>
<input name="item1" value="val1"/></br>
<input name="item3" value="val3"/></br>
<button type="submit">OK</button>
</form>
''')
if __name__ == '__main__':
app.run(debug=True)