使用Flask-Principal角色填充WTForm MultiCheckboxField

我正在编写我的应用程序的编辑用户页面，我似乎无法弄清楚如何呈现用户的当前角色，就像我做其他变量（如电子邮件）。使用Flask-Principal角色填充WTForm MultiCheckboxField

这里是我的模型，形式和观点：

#Flask-Principal Role Model 
class Role(db.Model, RoleMixin): 
    id = db.Column(db.Integer(), primary_key=True) 
    name = db.Column(db.String(80), unique=True) 
    description = db.Column(db.String(255)) 

    def __repr__(self): 
     return '<Role %r>' % (self.name) 

#SQLALchemy User Model 
class User(db.Model, UserMixin): 
    id = db.Column(db.Integer, primary_key = True) 
    email = db.Column(db.String(255), unique=True) 
    password = db.Column(db.String(255)) 
    first_name = db.Column(db.String(128)) 
    last_name = db.Column(db.String(128)) 
    business_name = db.Column(db.String(128)) 
    active = db.Column(db.Boolean()) 
    roles = db.relationship('Role', secondary=roles_users, 
          backref=db.backref('users', lazy='dynamic')) 

#WTForms User Form 
class UserForm(Form): 
    first_name = StringField('first name', validators= [Required()]) 
    last_name = StringField('last name', validators= [Required()]) 
    business_name = StringField('business name', validators= [Required()]) 
    email = StringField('email', validators = [Required(), Email()]) 
    active = BooleanField('active') 
    roles = MultiCheckboxField('roles', coerce=int) 

#Edit User View 
@app.route('/admin/users/<id>/edit/', methods = ['GET', 'POST']) 
@roles_required('admin') 
def edit_user(id): 
    user = User.query.filter_by(id = id).first() 
    editform = UserForm() 

# This is how I've assigned choices for other MultiCheckboxField forms, but I haven't 
# needed to populate the MultiCheckboxField from a user model before with role objects. 

    editform.roles.choices = [(x.id,x.name) for x in Role.query.all()] 

    if editform.validate_on_submit(): 
     pass 

    editform.first_name.data = user.first_name 
    editform.last_name.data = user.last_name 
    editform.business_name.data = user.business_name 
    editform.email.data = user.email 
    editform.active.data = user.active 

#The below doesn't show all the available roles, just the current roles assigned. 

    editform.roles.data = user.roles 


    return render_template("user_edit.html", 
     title = "Edit User", 
     user = user, 
     editform = editform)

那么，有没有人知道如何有WTForms显示所有可用的角色，并检查这是目前在user.roles列表中的人？

来源

2014-11-20 Chockomonkey

data为多选场是form_data名单已由裹挟后您的coerce调用 - 所以你提供需要匹配什么可作为每个元组的第一个条目您提供choices - 在这种情况下，，一个整数。也就是说，如果你改变你的代码：

editform.roles.data = [role.id for role in user.roles]

你应该看到所有相应的复选框选中。

来源

2014-11-20 21:38:56

这很完美。一旦我按照你的建议格式化了数据，它们就会按照我的意愿拼凑起来并工作。谢谢多谢恩！ – Chockomonkey 2014-11-20 22:27:44

使用Flask-Principal角色填充WTForm MultiCheckboxField

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