## problem Django fails to operate file when using `logging` logging module `logging error Permi…
## error message ``` raise NodeNotFoundError(self.error_message, self.key, origin=self.origin) …
Every time the project is updated and apache is started, the access is always loaded, either 404 or…
Editing the url.py file of the project (sutdentsite) prompts the following error: TypeError: \_path…
Bellow are four possibilities you should check to solve this problem. ## 1 check ports There …
## Model update general usage If our table structure is like this ``` class User(models.Mode…
## error message ``` File "I:\xx\urls.py", line 22, in <module> url('', include('system.ur…
In the use of django development, it is inevitable that you will always encounter the processing of…
At work, you will encounter that the data filled in the form needs to be verified separately. This …
## environment * django== 2.1.1 * Render url in html **xx.html** ``` <a href='{% url…
## Install `django-registration` ``` pip install django-registration ``` **note**: `djan…
django request Get the requested URL * `request.get_host()`: Get the request address * `req…
## Introduction Fast paging can be achieved in django, but when the data reaches several million…
Django ORM encapsulates database operations quite well, and most of the daily database operations c…
## Introduction Django's model layer provides an ORM system, which allows us to use the database…
## Brief introduction When we visit a django website for the first time, django will generate a …
Django **url** parameter alias writing use url ``` from django.conf.urls import url url(r'^dat…
Create tables dynamically and operate them through Django ORM. ## Dynamically create tables D…
## description Use the `<video>` tag of html5 to play: ``` <video width="320" height="240" c…
## description The value obtained by `django request.session.session_key` is `None`. ## solut…
## environment * django version: 2.1.0 * The social\_django module is used. ## descripti…
## detailed error message ``` File "C:\Python27\MyDjango\jianzhi_002\jianzhi_app\views.py", lin…
Use selenium to add a cookie prompt error: ``` Traceback (most recent call last): File "I:/D…
## Install package ``` pip install django-apscheduler ``` ## usage 1\. Modify the settin…
**Django model layer (database) connection processing logic:** 1. Use `CONN_MAX_AGE` configurat…
`django ConnectionError: Error 104 while writing to socket` Connection reset by peer: ``` Inter…
Background: django == 2.2 ``` Traceback (most recent call last): File "D:\software\python3.6…
## description In the test project, the database: sqlite, an error is prompted when the table na…
## Introduction In Django, some of the more complex methods are not suitable for using orm, and …
## environment * python3.6 * django=2.2 ## reason When django connects to mysql, MySQ…
## environment * python3.6 * django=2.2 In case of accidental situation, the file in mig…
Django randomly extracts data from the specified table in the specified database ## method 1: us…
This article mainly explains how to get the parameters in request.GET and request.POST ## get pa…
In actual development, it is often necessary to get the current URL in the template. The method of …
In the actual django development process, sometimes it is necessary to record the user's ip informa…
## Introduction If not explicitly specified, by default id is the name of the field created as t…
There are many documents on how to serialize a model query set, but how to serialize the fields of …
## Introduction In django development, an error is prompted when using django form: ``` Fi…
In the actual application of Django, it is often necessary to extract the data within the specified…
When using virtualenv (virtual environment) to run Xadmin to run /makemigrations, an error message …
Using JsonResponse to return data encountered an error in development: ``` TypeError: In order …
## Introduction I have a query similar to the following: ``` SELECT SUM(ISNULL(table.name)) …
Add your own custom implementation of the following two views under views.py under your main conten…
## Introduction Using Django as the backend, the client requests data from Django. In order to d…
I have a Django model with two custom manager methods. Each object will be based on different attri…
## Introduction In Django, suppose I want to iterate and print the resulting QuerySet, what is t…
## problem Using the Django Debug Toolbar, I found that the sql statement to count the number of…
Call the Django environment in a Python script: ``` import os if __name__ =='__main__': …
django ForeignKey (foreign key) setting allows to be empty for example ``` class Writer(mode…
## background When using django3 for development, because the project front-end page uses the if…
## background Due to project requirements, development is carried out in an embedded environment…
## background When using django to create a model, use `model.IPAddressField` to create a field.…
## from model to sql statement ### Django 1.9 and below versions: ``` python manage.py sqlal…
Whenever we create any new model, an ID field is appended. By default, the data type of the ID fiel…
Sometimes you want to know how Django ORM makes our queries execute, or what the SQL corresponds to…
Django ORM between and usage ## sql statement ``` SELECT * FROM target WHERE ctime BETWEEN '…
## background Because the use of `Manager.raw ()` can not meet the needs of executing SQL statem…
## environment * python3.7 * django 3.1 Use `model.object.raw(sql)` in django triggered…
## Django paging warning prompt ``` UnorderedObjectListWarning: Pagination may yield inconsiste…
## Introduction Using DetailView, prompt error: ``` AttributeError: Generic detail view xxx …
## Introduction A sitemap is a container for all links on a website. Many websites have deep con…
## Introduction It is important to understand that the options in the Django model field definit…
In django, when using paging, the paging URL needs to carry parameters, such as: ``` http://127…
## limiting QuerySets In django's official document, the method to query limited number of objec…
## environment * python=3.8 * django=3.1 ## error message ``` django.core.exceptions…
## environment Django: how to uses bulk\_create (batch creation) to get the id after successful …
## background Front-end and back-end development are separated, and cross-domain problems will i…
Solve `Incorrect string value: ‘\xF0\x9F\x8C\xB8’ for column'xxx' at row 1` error caused by storing…
if you want to use orm in django to implement the following sql statement functions: ``` SELECT…
When runserver to start django, some websocket connections are automatically interrupted. ## Err…
## error message ``` django.db.utils.InterfaceError: (0, '') ``` ## Reasons for database di…
## Introduction Use the `get_object` method of `DetailView` to trigger `Http404`, if the object …
Django uses templates filter to limit the number of characters * If the desired stage is a **s…
how to filter out the html tags contained in strings in django templates. there are two ways: …
## Introduction Use django, use form in django to format data, individual fields will have a def…
The optimized code is as follows: ## sitemap.py ``` from django.contrib.sitemaps import Site…
## scenes to be used For example, when generating an order, you need to generate multiple data r…
Sometimes, after deployment, there is no error in the deployment of django blog or website, but whe…
When debugging the Django project on line, it is found that the Server Error (500) is displayed whe…
## Operating environment: * **System**: Ali Cloud Ubuntu 18.04.3 LTS (GNU / Linux 4.15.0-52-ge…
## error description  here is the error message: ``` File "D…
For Django newbies, there will be many problems during the learning process, which often encounters…
## Solution Execute this first: ``` python manage.py migrate --fake ``` Then ``` pyt…
The [django-hitcount](https://pypi.org/project/django-hitcount/) package is very useful for countin…
## description This bug has puzzled me for two days! At first, I am pretty sure I have write the…
## error description I got this error from my daphne logs after deployment, but I'm sure I have …
To allow users login with google account in our django can be easily done by using [django-allauth]…
A beautiful icon would help uses to find our website in their Bookmarks. Here we would talk about d…
Paginations are often used in listviews of django projects, such as article list, question list and…
Interestingly, I found this problem after deploying my django project. Because the **django-compre…
After googling for a while for a plugin to automatically add `rel="nofollow"` and `target="_blank…
This article will show you how to create a **minimal** points/reputation system in our django proje…
elasticsearch is powerful, however, django-haystack only supports old versions of elasticsearch. …
Fortunately, we do not need to do much work to create an admin site for our django project, because…
if you got this error in your django project, you could: ## **1 Check your** `settings.py` in…
## **BUG** After finishing deployment of my django blog, I found there is a problem with uploadi…