我需要一些建议
在以下代码中，如果指定了 record_id，WTF 表单将填充信息。
@app.route('/settings', methods=['GET', 'POST']) def settings(**kwargs): ... record_id_ = kwargs.pop('rec_id', 0) if record_id_ != 0: # if focus record is spesified data = find_sql_data... # insert values into licence form form1.field1.data = lic_data[0][1] ... else: # No focus record is spesified form1.field8.data = datetime(2000, 1, 2) ... return render_template(template_name_or_list='setup.html', form1=form1, data=data, )
问题是，当未指定记录时，“settings.html”会完美呈现，但如果指定了记录，则信息会正确传递，但 Flask 路径错误并且未应用 CSS
Flask 路径更改为
GET /static/assets/....GET /settings/static/assets/....如何修复 CSS（和其他）文件的路径
谢谢 埃弗特
我尝试将
return redirect(url_for('settings', record_id=record_id))return setting(record_id=record_id)阻止表单数据也不能解决问题
在我看来，您已经在模板中为 CSS 文件指定了相对路径。这就是路径根据路线而变化的原因。如果您使用
url_for('static', filename=...)以下示例向您展示了如果您要使用评论中提到的 URL 参数，您的应用程序可能会是什么样子。该示例使用 Flask-SQLAlchemy 的旧版查询接口。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Settings</title>
<link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='assets/main.css') }}">
</head>
<body>
<form method="post" action="{{ url_for('settings', record_id=obj_id) }}">
{{ form.csrf_token }}
<div>
{{ form.field1.label() }}
{{ form.field1() }}
</div>
<div>
{{ form.field2.label() }}
{{ form.field2() }}
</div>
<button type="submit">Submit</button>
</form>
</body>
</html>
from flask import (
Flask,
redirect,
render_template,
request,
url_for
)
from datetime import datetime
from flask_sqlalchemy import SQLAlchemy
from flask_wtf import FlaskForm
from wtforms import DateTimeField, StringField
app = Flask(__name__)
app.config.from_mapping(
SECRET_KEY='your secret here',
SQLALCHEMY_DATABASE_URI='sqlite:///example.db'
)
db = SQLAlchemy(app)
class Settings(db.Model):
id = db.Column(db.Integer, primary_key=True)
field1 = db.Column(db.String)
field2 = db.Column(db.DateTime)
with app.app_context():
db.drop_all()
db.create_all()
class SettingsForm(FlaskForm):
field1 = StringField()
field2 = DateTimeField()
@app.route('/settings', methods=['GET', 'POST'])
def settings():
obj_id = request.args.get('record_id', 0, type=int)
obj = Settings.query.get(obj_id)
data = { 'field2': datetime(2000, 1, 2) }
form = SettingsForm(request.form, obj=obj, data=data)
if form.validate_on_submit():
if not obj:
obj = Settings()
db.session.add(obj)
form.populate_obj(obj)
db.session.commit()
return redirect(url_for('settings', record_id=obj.id))
return render_template('settings.html', **locals())
如果您喜欢可变规则，可以使用以下实现。
@app.route('/settings', methods=['GET', 'POST'], defaults={ 'obj_id': 0 })
@app.route('/settings/<int:obj_id>', methods=['GET', 'POST'])
def settings(obj_id=0):
obj = Settings.query.get(obj_id)
data = { 'field2': datetime(2000, 1, 2) }
form = SettingsForm(request.form, obj=obj, data=data)
if form.validate_on_submit():
if not obj:
obj = Settings()
db.session.add(obj)
form.populate_obj(obj)
db.session.commit()
return redirect(url_for('settings', obj_id=obj.id))
return render_template('settings.html', **locals())