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试图在我的数据库中为我的表创建这个模型但是我在查看表时遇到这个关键错误，然后我得到这个错误，我怀疑这是将我的数据添加到表中的问题的链接，任何帮助都很大赞赏。我还在我的视图模块中创建了一个视图，但它只是模型之间的一个简单连接，我列出了字段，我将包含我需要的 appbuilder 视图，

视图.py：

class PView(ModelView):
    datamodel = SQLAInterface(Profile)
    list_columns = ['id', 'name', 'properties']

appbuilder.add_view(PView, "X", icon="fa-envelope", category="X")

模型.py：

class Profile(Model):
    __tablename__ = 'profile'
    id = Column(Integer, primary_key=True)
    name = Column(String(100), nullable=False)
    properties = Column(JSONB, nullable=True)

    def __repr__(self):
        return self.name

追溯：

Traceback (most recent call last):
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask/app.py", line 1982, in wsgi_app
    response = self.full_dispatch_request()
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask/app.py", line 1614, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask/app.py", line 1517, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask/_compat.py", line 33, in reraise
    raise value
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask/app.py", line 1612, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask/app.py", line 1598, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/security/decorators.py", line 26, in wraps
    return f(self, *args, **kwargs)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/views.py", line 478, in list
    widgets=widgets)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/baseviews.py", line 160, in render_template
    return render_template(template, **dict(list(kwargs.items()) + list(self.extra_args.items())))
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask/templating.py", line 134, in render_template
    context, ctx.app)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask/templating.py", line 116, in _render
    rv = template.render(context)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/jinja2/asyncsupport.py", line 76, in render
    return original_render(self, *args, **kwargs)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/jinja2/environment.py", line 1008, in render
    return self.environment.handle_exception(exc_info, True)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/jinja2/environment.py", line 780, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/templates/appbuilder/general/model/list.html", line 2, in top-level template code
    {% import 'appbuilder/general/lib.html' as lib %}
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/templates/appbuilder/base.html", line 1, in top-level template code
    {% extends base_template %}
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/templates/appbuilder/baselayout.html", line 2, in top-level template code
    {% import 'appbuilder/baselib.html' as baselib %}
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/templates/appbuilder/init.html", line 46, in top-level template code
    {% block body %}
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/templates/appbuilder/baselayout.html", line 19, in block "body"
    {% block content %}
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/templates/appbuilder/general/model/list.html", line 7, in block "content"
    {% block list_search scoped %}
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/templates/appbuilder/general/model/list.html", line 8, in block "list_search"
    {% call lib.accordion_tag("accordion1",_("Search"), False) %}
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/jinja2/runtime.py", line 579, in _invoke
    rv = self._func(*arguments)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/templates/appbuilder/general/lib.html", line 254, in template
    {{ caller() }}
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/jinja2/runtime.py", line 579, in _invoke
    rv = self._func(*arguments)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/templates/appbuilder/general/model/list.html", line 9, in template
    {{ widgets.get('search')()|safe }}
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/flask_appbuilder/widgets.py", line 107, in __call__
    label_columns[col] = as_unicode(self.template_args['form'][col].label.text)
  File "/Users/adam/myapp/venv/lib/python3.6/site-packages/wtforms/form.py", line 65, in __getitem__
    return self._fields[name]
KeyError: 'properties'
4

1 回答 1

1

Flask-AppBuilder似乎缺乏对 SQLAlchemy 的 Postgresql JSONB 类型实现的支持。另一方面，除了文本字段之外，为 JSON 等灵活格式想象一个通用输入小部件具有挑战性。

回溯显示在呈现搜索小部件期间引发了异常，并且如果您检查调试器中的字段，肯定'properties'会丢失：

[console ready]
>>> self._fields
collections.OrderedDict({'name': <wtforms.fields.core.StringField object at 0x7febfe492668>, 'csrf_token': <wtforms.csrf.core.CSRFTokenField object at 0x7febfe492978>})
>>>

“解决方案”是从表单中完全排除有问题的字段：

class PView(ModelView):
    datamodel = SQLAInterface(Profile)
    list_columns = ['id', 'name', 'properties']
    add_exclude_columns = ['properties']
    edit_exclude_columns = ['properties']
    search_exclude_columns = ['properties']

当然，这根本不是一个解决方案，因为它使属性实际上无法使用。

于 2018-08-14T19:15:45.340 回答