Question

尝试将Flask Session变量传递给WTForms时遇到错误。我通过搜索和文档阅读了有关该主题的所有内容，但我不清楚正确的方法。我对Web开发完全陌生，我确信有一些我还不了解的概念。

users_department是一个Flask会话变量，用于填充在wtforms.SelectField中列出project_lead的WTForm。但是，我在调用Flask会话变量RunTimeError时遇到错误：在请求上下文之外工作。

以下是我的代码。

import wtforms
import flask

def get_team_members():
    user_department =  flask.session.get('user_department')
    # run SQLite query to find team members based on the variable user_department
    # create a list from the SQLite results
    return team_results

@app.route('/manage', methods=['GET', 'POST'])
def manage():
    form = ProjectForm(request.form) #Call the project form to display
    #The line below causes the error but it works if hard coded with a department
    form.project_lead.choices = get_team_members() #Get team members for user
    return render_template('manage.html', form = form)

class ProjectForm(wtforms.Form):
    project_lead = wtforms.SelectField(u'Project Lead',
                                   validators=[wtforms.validators.optional()])

Answer 1

我想出了如何修复它。调用WTforms后不要调用烧瓶会话。以下是需要更改的部分。

@app.route('/manage', methods=['GET', 'POST'])
def manage():
    team = get_team_members() #Get team members for user
    form = ProjectForm(request.form) #Call the project form to display
    form.project_lead.choices = team
    return render_template('manage.html', form = form)

WTForms的Flask会话变量

1 个答案: