current user.is_authenticated gives me a True value but it didn’t work in base.html file.

huangapple
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英文:

current user.is_authenticated gives me a True value but it didn't work in base.html file

问题

以下是您要翻译的内容：

  1. 我正在尝试检查用户是否已登录，以更改导航元素并执行其他操作，以下是我的代码
  3. 当我执行以下代码时
  5. `print(attempted_account.is_authenticated)` 结果 => `True`
  7. 我认为问题可能出在 `base.html` 文件中，所以希望您可以帮助我。
  9. **routs.py：**
  11.     @app.route('/login',methods=['GET','POST'])
  12.     def login():
  13.         form = LoginForm()
  14.         if form.validate_on_submit():
  15.             attempted_account = Account.query.filter_by(email=form.email.data).first()
  16.             print(attempted_account.is_authenticated)
  17.             if attempted_account and attempted_account.check_password(attempted_password=form.password.data):
  18.                 login_user(attempted_account)
  19.                 flash('登录成功',category='success')
  20.                 return redirect(url_for('page',id=1))
  21.             elif not attempted_account:
  22.                 flash("该电子邮件不存在",category='danger')
  23.             else:
  24.                 flash('密码不正确',category='danger')
  25.         return render_template('login.html',form=form)
  27. **base.html**
  29.     <nav>
  30.         <ul>
  31.             <li><a class="home" href="{{ url_for('home') }}">市场</a></li>
  32.             <li><a href="{{ url_for('page',id=1) }}">购物</a></li> 
  33.         </ul>
  34.         {% if current_user.is_authenticated %}
  35.             <ul>
  36.                 <li><a href="#">注销</a></li> 
  37.             </ul>
  38.         {% else %}
  39.             <ul>
  40.                 <li><a href="{{ url_for('signup') }}">注册</a></li>
  41.                 <li><a href="{{ url_for('login') }}">登录</a></li> 
  42.             </ul>
  43.         {% endif %}
  44.     </nav>
  46. **login.html**
  48.     {% extends 'base.html' %}
  49.     {% block title %}
  50.         登录
  51.     {% endblock %}
  53.     {% block content %}
  54.     <div class="container">
  55.         <form method="POST" class="form-register" style="text-align: center;">
  56.         {{ form.hidden_tag() }}
  57.         {{ form.csrf_token }}
  59.         {{ form.email.label() }}
  60.         {{ form.email(class='form-control',placeholder='example@example.com') }}
  61.         <br>
  62.         {{ form.password.label() }}
  63.         {{ form.password(class='form-control',placeholder='密码') }}
  64.         <br>
  65.         {{ form.submit(class='btn btn-lg btn-block btn-primary') }}
  66.         </form>
  67.     </div>
  68.     {% endblock %}
  70. **请注意，我将我的模型称为 Account 而不是 User**
  72. **编辑：**
  74. 这是 models.py：
  76.     from market import db
  77.     from market import bcrypt,login_manager
  78.     from flask_login import UserMixin
  80.     @login_manager.user_loader
  81.     def load_user(user_id):
  82.         return Account.query.filter_by(id=user_id)
  84.     class Account(db.Model,UserMixin):
  86.     id              = db.Column(db.Integer,primary_key = True)
  87.     first_name      = db.Column(db.String(length = 50),nullable  = False)
  88.     last_name       = db.Column(db.String(length = 50),nullable  =False)
  89.     email           = db.Column(db.String(length = 100),nullable =False,unique = True)
  90.     password_hashed = db.Column(db.String(length = 25),nullable = False)
  91.     #country        = db.Column(db.String,nullable = False)
  92.     items           = db.relationship('Item',backref = 'owner',lazy = True)
  94.     @property
  95.     def password(self):
  96.         return self.password
  97.     @password.setter
  98.     def password(self,plain_text_password):
  99.         self.password_hashed = bcrypt.generate_password_hash(plain_text_password).decode('utf-8')
  100.     def check_password(self,attempted_password):
  101.         return bcrypt.check_password_hash(self.password_hashed,attempted_password)
英文:

I'm trying to check if the user is logged in or not to change nav elements and to do more stuff and here is my code

And when I do this

print(attempted_account.is_authenticated) result => True

I think that the problem will be in base.html file so I hope you can help me.

routs.py:

  1. @app.route(&#39;/login&#39;,methods=[&#39;GET&#39;,&#39;POST&#39;])
  2. def login():
  3.     form = LoginForm()
  4.     if form.validate_on_submit():
  5.         attempted_account = Account.query.filter_by(email=form.email.data).first()
  6.         print(attempted_account.is_authenticated)
  7.         if attempted_account and attempted_account.check_password(attempted_password=form.password.data):
  8.             login_user(attempted_account)
  9.             flash(&#39;Success login &#39;,category=&#39;success&#39;)
  10.             return redirect(url_for(&#39;page&#39;,id=1))
  11.         elif not attempted_account:
  12.             flash(&quot;The E-mail doesn&#39;t exist&quot;,category=&#39;danger&#39;)
  13.         else:
  14.             flash(&#39;Tha password is incorrect&#39;,category=&#39;danger&#39;)
  15.     return render_template(&#39;login.html&#39;,form=form)

base.html

  1. &lt;nav&gt;
  2.     &lt;ul&gt;
  3.         &lt;li&gt;&lt;a class=&quot;home&quot; href=&quot;{{ url_for(&#39;home&#39;) }}&quot;&gt;Market&lt;/a&gt;&lt;/li&gt;
  4.         &lt;li&gt;&lt;a href=&quot;{{ url_for(&#39;page&#39;,id=1) }}&quot;&gt;Go shopping&lt;/a&gt;&lt;/li&gt; 
  5.     &lt;/ul&gt;
  6.     {% if current_user.is_authenticated %}
  7.         &lt;ul&gt;
  8.             &lt;li&gt;&lt;a href=&quot;#&quot;&gt;Logout&lt;/a&gt;&lt;/li&gt; 
  9.         &lt;/ul&gt;
  10.     {% else %}
  11.         &lt;ul&gt;
  12.             &lt;li&gt;&lt;a href=&quot;{{ url_for(&#39;signup&#39;) }}&quot;&gt;Sign up&lt;/a&gt;&lt;/li&gt;
  13.             &lt;li&gt;&lt;a href=&quot;{{ url_for(&#39;login&#39;) }}&quot;&gt;Login&lt;/a&gt;&lt;/li&gt; 
  14.         &lt;/ul&gt;
  15.     {% endif %}
  16. &lt;/nav&gt;

login.html

  1. {% extends &#39;base.html&#39; %}
  2. {% block title %}
  3.     Login
  4. {% endblock %}
  6. {% block content %}
  7. &lt;div class=&quot;container&quot;&gt;
  8.     &lt;form method=&quot;POST&quot; class=&quot;form-register&quot; style=&quot;text-align: center;&quot;&gt;
  9.     {{ form.hidden_tag() }}
  10.     {{ form.csrf_token }}
  12.     {{ form.email.label() }}
  13.     {{ form.email(class=&#39;form-control&#39;,placeholder=&#39;example@example.com&#39;) }}
  14.     &lt;br&gt;
  15.     {{ form.password.label() }}
  16.     {{ form.password(class=&#39;form-control&#39;,placeholder=&#39;Password&#39;) }}
  17.     &lt;br&gt;
  18.     {{ form.submit(class=&#39;btn btn-lg btn-block btn-primary&#39;) }}
  19.     &lt;/form&gt;
  20. &lt;/div&gt;
  21. {% endblock %}

Please note that I called my model Account not User

Edit:

Here is models.py:

  1. from market import db
  2. from market import bcrypt,login_manager
  3. from flask_login import UserMixin
  5. @login_manager.user_loader
  6. def load_user(user_id):
  7.     return Account.query.filter_by(id=user_id)
  9. class Account(db.Model,UserMixin):
  11. id              = db.Column(db.Integer,primary_key = True)
  12. first_name      = db.Column(db.String(length = 50),nullable  = False)
  13. last_name       = db.Column(db.String(length = 50),nullable  =False)
  14. email           = db.Column(db.String(length = 100),nullable =False,unique = True)
  15. password_hashed = db.Column(db.String(length = 25),nullable = False)
  16. #country        = db.Column(db.String,nullable = False)
  17. items           = db.relationship(&#39;Item&#39;,backref = &#39;owner&#39;,lazy = True)
  19. @property
  20. def password(self):
  21.     return self.password
  22. @password.setter
  23. def password(self,plain_text_password):
  24.     self.password_hashed = bcrypt.generate_password_hash(plain_text_password).decode(&#39;utf-8&#39;)
  25. def check_password(self,attempted_password):
  26.     return bcrypt.check_password_hash(self.password_hashed,attempted_password)

答案1

得分: 1

问题可能是因为您在user_loader回调中返回了一个查询结果，而不是一个Account对象。

尝试返回Account.query.filter_by(id=user_id).first()，而不是返回Account.query.filter_by(id=user_id)。

希望能解决问题。

英文:

The issue is probably because you're returning a query result in the user_loader callback instead of an Account object.

Instead of returning Account.query.filter_by(id=user_id) try returning Account.query.filter_by(id=user_id).first().

Hope it works.

huangapple
  • 本文由 发表于 2023年2月9日 00:20:36
  • 转载请务必保留本文链接：https://go.coder-hub.com/75388726.html
  • flask
  • flask-login
  • python
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