我正在学习使用Flask-login来使登录功能,并且我在下面的教程中面临以下代码:
@app.route('/login', methods = ['GET', 'POST'])
def login():
if current_user.is_authenticated:
return redirect(url_for('index'))
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(username=form.username.data).first()
if user is None or not user.check_password(form.password.data):
flash('Invalid username or password')
return redirect(url_for('login'))
login_user(user, remember=form.remember_me.data)
next_page = request.args.get('next')
if not next_page or url_parse(next_page).netloc != '': # what is it means in this line..?
next_page = url_for('index')
return redirect(next_page)
return render_template('login.html', title='Sign In', form=form)
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但是我不确定上面注释的代码是什么..?,尤其是netloc词,那是什么..?,我知道这代表网络局部性,但是该行的目的是什么..?
我正在使用Flask制作订票应用程序。但是现在我对如何将数据从一个页面发送到另一个页面有点困惑,就像这段代码:
@app.route('/index', methods = ['GET', 'POST'])
def index():
if request.method == 'GET':
date = request.form['date']
return redirect(url_for('main.booking', date=date))
return render_template('main/index.html')
@app.route('/booking')
def booking():
return render_template('main/booking.html')
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这 date变量是来自表单的请求,现在我想将date数据发送到booking函数。什么是这个目的的术语..?
我正在学习Python测试,现在我正在使用pytest-cov。
我尝试运行这个命令:
pytest --cov=myProj tests/ --cov-report term-missing
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测试完成后我得到了这样的报告:
----------- coverage: platform linux, python 3.6.7-final-0 -----------
Name Stmts Miss Cover Missing
----------------------------------------------------------------------------------------------
myProject/__init__.py 0 0 100%
myProject/alert.py 14 14 0% 1-21
myProject/api/__init__.py 1 0 100%
myProject/api/spaces/__init__.py 0 0 100%
myProject/api/spaces/admin.py 279 179 36% 154-223, 312-335, 351-398, 422-432, 505-515, 534-565, 591-697
myProject/api/spaces/global.py 89 66 26% 35-43, 47-69, 72-92, 96-124
myProject/api/spaces/inventory.py 79 79 0% 1-119
myProject/api/spaces/keyword.py 134 110 18% 33-42, 46-68, 72-93, 101-112, 116-134, 138-165, 168-190
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有一些事情让我仍然对我在文档中找不到的报告感到困惑:什么是 Stmts、 …
I making a select option using react-select following this Installation and usage example code.
There was an object of array to store the option like this:
const options = [
{ value: 'chocolate', label: 'Chocolate' },
{ value: 'strawberry', label: 'Strawberry' },
{ value: 'vanilla', label: 'Vanilla' }
];
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Now, I want to make it dynamically to store the value from other data and make it iterate on the object.
like this:
const options = [
{ value: flavor, label: …Run Code Online (Sandbox Code Playgroud) 我想如果我点击关闭图标,闪烁的消息就会关闭,或者在一段时间内自动关闭,例如:5秒后它会自动关闭。
这是我的_flash.html
{% macro render_flashes(class) %}
{% with msgs = get_flashed_messages(category_filter=[class]) %}
{% for msg in msgs %}
<div class="ui {{ class }} message">
<i class="close icon"></i>
{{ msg }}
</div>
{% endfor %}
{% endwith %}
{% endmacro %}
<div class="ui text container">
<div class="flashes">
{{ render_flashes('error') }}
{{ render_flashes('warning') }}
{{ render_flashes('info') }}
{{ render_flashes('success') }}
</div>
</div>
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那么我需要如何改进我的代码才能做到这一点......?
PS:有关更多信息,我使用这个很好的样板。
我有一个这样的模型:
class Schedule(db.Model):
__tablename__ = 'schedule'
id = db.Column(db.Integer, primary_key=True)
student_id = db.Column(ARRAY(db.Integer, db.ForeignKey('student.id')))
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然后我将student_id列更改为如下所示:
student_id = db.Column(db.Integer, db.ForeignKey('student.id'))
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这是我的迁移文件的片段:
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql
from sqlalchemy.dialects.postgresql import INTEGER
def upgrade():
# ### commands auto generated by Alembic - please adjust! ###
# ...
op.alter_column('schedule', 'student_id',
existing_type=postgresql.ARRAY(INTEGER()),
type_=sa.Integer(),
existing_nullable=True)
# ...
# ### end Alembic commands ###
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当我尝试运行db migrate命令时,我收到以下错误消息:
sqlalchemy.exc.ProgrammingError: (psycopg2.errors.DatatypeMismatch) column "student_id" cannot be cast automatically to type …Run Code Online (Sandbox Code Playgroud) 我想在开发 android 应用程序时启用热重载,然后我在我的模拟器上按CTRL+M,但是这个东西也出现在我的模拟器屏幕上。我不知道这东西的热量是什么,但我想隐藏它。
所以,我的问题是,那东西的热量是什么,隐藏它的键盘快捷键是什么..?
我有两个主表,即角色和用户,在用户上我将 3 个关联到表操作员、教师和学生。
到目前为止,我是这样做的:
class Role(db.Model):
__tablename__ = 'roles'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(64), unique=True)
permissions = db.Column(db.Integer)
users = db.relationship('User',
backref='role', lazy='dynamic')
class User(UserMixin, db.Model):
__tablename__ = 'users'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(64), index=True)
email = db.Column(db.String(64), unique=True, index=True)
password_hash = db.Column(db.String(128))
role_id = db.Column(db.Integer, db.ForeignKey('roles.id'))
__mapper_args__ = {
'polymorphic_identity': 'users',
'with_polymorphic': '*',
}
class Operator(User):
__tablename__ = 'operator'
id = db.Column(db.Integer, primary_key=True) …Run Code Online (Sandbox Code Playgroud) 我想使用React-Native开发 android 应用程序,它在模拟器上运行良好,但是当我尝试使用真实设备时,该应用程序在启动时立即关闭,即使它带有 fress react-native init projectName。
当我尝试在 Logcat 上查看时,这是我尝试打开新应用程序时的结果:
11-24 07:03:39.408 2007-2007/? E/PhoneStatusBar: updateNotificationTitleText preIsInsidePanelCanSlide =true,misInsidePanelCanSlide = true,misInsidePanelOpen = false
11-24 07:03:40.068 2708-3433/? D/PhoneInterfaceManager: [PhoneIntfMgr] getDefaultSubscription, sub = 12
11-24 07:03:40.068 2708-3609/? D/PhoneInterfaceManager: [PhoneIntfMgr] getDefaultSubscription, sub = 12
11-24 07:03:40.098 2708-3600/? D/PhoneInterfaceManager: [PhoneIntfMgr] getDefaultSubscription, sub = 12
11-24 07:03:40.108 2708-3107/? D/PhoneInterfaceManager: [PhoneIntfMgr] getDefaultSubscription, sub = 12
--------- beginning of system
11-24 07:03:40.118 1022-1042/? I/ActivityManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.library_app2/.MainActivity bnds=[286,87][539,358]} from uid 10059 and from …Run Code Online (Sandbox Code Playgroud) 我正在尝试使用flask-wtf和wtforms-alchemy 在此表单上创建注册表单我尝试创建selectfield,其值是从我的模型中查询的。但我总是收到这个错误:
ValueError: too many values to unpack (expected 2)
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这是我的代码:
from flask_wtf import FlaskForm
from wtforms_sqlalchemy.fields import QuerySelectField
def choose_domicile():
return Domicile.query
class RegisterForm(FlaskForm):
name = StringField('Name', validators=[DataRequired()])
domicile = QuerySelectField(u'Domicile', query_factory=choose_domicile)
@app.route('/signup', methods=['GET', 'POST'])
def signup():
form = RegisterFormView()
try:
if form.validate_on_submit():
new_user = Data(name=form.name.data, domicile=form.domicile.data)
db.session.add(new_user)
db.session.commit()
return "Success"
except:
return "Failed"
return render_template('signup.html', form=form)
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这是我的signup.html:
{% block content %}
<div class="container">
<form class="form-signin" method="POST" action="/signup">
<h2 class="form-signin-heading">Sign Up</h2>
{{ …Run Code Online (Sandbox Code Playgroud) python ×5
flask ×4
android ×2
javascript ×2
postgresql ×2
sqlalchemy ×2
alembic ×1
apk ×1
ecmascript-6 ×1
flask-login ×1
html ×1
networking ×1
psycopg2 ×1
pytest ×1
pytest-cov ×1
python-3.x ×1
react-native ×1
react-select ×1
reactjs ×1
unit-testing ×1