我正在使用react-router v4和redux-saga.我正在尝试在页面加载时进行API调用.当我访问时/detailpage/slug/,我的应用程序似乎陷入循环并且无休止地调用我的API端点.这是我的应用程序的设置方式.假设我的导入是正确的.
index.js
const history = createHistory()
const sagaMiddleware = createSagaMiddleware()
const middleware = [routerMiddleware(history), sagaMiddleware]
const store = createStore(
combineReducers({
aReducer
}),
applyMiddleware(...middleware)
)
injectTapEventPlugin();
sagaMiddleware.run(rootSaga)
ReactDOM.render(
<Provider store={store}>
<ConnectedRouter history={history}>
<Switch>
<Route path="/" exact component={HomePage} />
<Route path="/detailpage/:slug" component={Detail} />
<Route path="/page" component={Page} />
</Switch>
</ConnectedRouter>
</Provider>,
document.getElementById('root')
);
减速器/ index.js
const aReducer = (state={}, action) => {
switch(action.type) {
case 'SHOW_DETAIL':
console.log('Reducers: reducer called')
return Object.assign({}, state, { name: 'adfsdf' })
default:
return state;
} …我正在升级到Django 1.7.4并使用新的内置迁移,但在尝试运行时出现以下错误makemigrations:
ValueError: Could not find function upload_callback in app_utils.
Please note that due to Python 2 limitations, you cannot serialize unbound
method functions (e.g. a method declared and used in the same class body).
Please move the function into the main module body to use migrations.For more information,
see https://docs.djangoproject.com/en/1.7/topics/migrations/#serializing-values
我的模型定义:
class Discount(models.Model):
banner = models.ImageField(
help_text=_("Banner image for this discount"),
upload_to=upload_to('discounts/', 'title'),
blank=True,
null=True
)
我的上传回调app_utils.py:
def upload_to(path, attribute=None):
def upload_callback(instance, filename):
compact = …