使用视图中的信息预填充WTForms无线电字段

时间:2017-01-31 02:53:35

标签: python flask wtforms flask-wtforms

使用flask和WTForms。我正在尝试将我的编辑和创建表单结合起来。当用户单击编辑时,视图会检查是否有传递的帖子ID,如果有,则抓取该帖子的当前信息并在模板​​中填充表单。我可以让它为每个字段工作,但'main_post'字段是单选按钮。

查看:

    @app.route('/posts-update' , methods=['POST','GET'])
    @login_required
    def posts_update():
        form = forms.Post()
        if request.method == 'POST' and request.form['id']:
            post = Post.query.filter_by(id=request.form['id']).first()
            form.title.data = post.title
            form.body.data = post.body

            # Works for all but main_post

            form.main_post.data = post.main_post

            # Also tried this and it didn't work
            # form = forms.Post(obj=post)
        else:
            post = False
            # form = forms.Post()
        return render_template('post_update.html', post=post, form=form)

形式:

    #post create and update
    class Post(Form):
        title = StringField('Title', validators=[DataRequired()])
        body = TextAreaField('Body', validators=[DataRequired()])
        main_post = RadioField('Make Main Post', choices=[('1', 'yes'), ('0', 'no')], validators=[DataRequired()])

模板:

        <input type="hidden" name="id" {% if post.id %}value="{{ post.id }}"{% endif %}>
    {{ form.title.label }} : {{ form.title }} <br/>
    {{ form.body.label }} : {{ form.body }} <br/>
    {{ form.main_post.label }} : {{ form.main_post }} <br/>
     <button class="button postfix"  type="submit">{% if post == False %}Add{% else %}Update{% endif %}</button>

1 个答案:

答案 0 :(得分:1)

在这里提出并回答了类似的问题How to dynamically set default value in WTForms RadioField?

您应该可以通过设置default值然后运行form.process()来执行此操作。

form.main_post.default = post.main_post
form.process()