Flask

Flask-SocketIO send images

让人想犯罪 __ 提交于 2020-12-10 07:43:58
问题 I am currently working on a project that uses Flask-SocketIO to send things over the internet, but I came across this question. Question: Is there any way to send images in Flask-SocketIO ? I did some googling but no luck for me. 回答1: Socket.IO is a data agnostic protocol, so you can send any kind of information. Both text and binary payloads are supported. If you want to send an image from the server, you can do something like this: with open('my_image_file.jpg', 'rb') as f: image_data = f

Flask-SocketIO send images

纵饮孤独 提交于 2020-12-10 07:42:13
问题 I am currently working on a project that uses Flask-SocketIO to send things over the internet, but I came across this question. Question: Is there any way to send images in Flask-SocketIO ? I did some googling but no luck for me. 回答1: Socket.IO is a data agnostic protocol, so you can send any kind of information. Both text and binary payloads are supported. If you want to send an image from the server, you can do something like this: with open('my_image_file.jpg', 'rb') as f: image_data = f

FormData以及原生Ajax上传图片

北慕城南 提交于 2020-12-07 23:50:47
Ajax对于表单提交来说,是一个很好的工具,他提供了异步提交的效果,这使得用户提交表单时不需要刷新页面就可获知提交成功与否,但一直以来,网上的示例大都是JQuery上传的教程,原生Ajax似乎并不受大家热爱,更别提原生Ajax上传图片的教程了,本篇将为你讲述JavaScript中使用FormData上传文件的教程 FormData FormData对象用以将数据编译成键值对,以便用XMLHttpRequest来发送数据。比起早先的Ajax,发送FormData的Ajax不仅可以发送图片,更好的一点是我们无需设置 RequestHeader ,也无需担心自己粗心写错 xhr.send() 中的参数。 用法 我们可以使用表单来构造一个FormData对象,也可以创建一个空的FormData对象,之后手动添加一些数据进去。 使用表单构造FormData对象。 做法很简单,使用 getElementById() 或 querySelector() 这类选择器获取表单对象,将其传入FormData的构造方法,如下: < form id = "formA" method = "POST" action = "/upload" enctype = "multipart/form-data" > < input type = "text" name = "username" id =

7. Flask URL默认转换器、自定义转换器、to_python、to_url

一曲冷凌霜 提交于 2020-12-07 03:42:13
Flask框架自带的转换器类型 int转换器 <int:param> :接收整数 float转换器 <float:param> : 接收浮点数 string转换器 <string:param> : 接收string类型( 默认则是string转换器 ) path转换器 <path:param> :和默认的相似,但也接收斜线 设置int类型的路径参数 # 转换器 <int:goods_id> @app.route('/goods_info/<int:goods_id>') def goods_info (goods_id) : return "goods_id is %d" % goods_id 测试访问 http://127.0.0.1:5000/goods_info/123 设置float转换器的路径参数 # 设置float转换器 @app.route('/goods_info/<float:goods_id>') def goods_info (goods_id) : return "goods_id is %s" % goods_id 测试访问 http://127.0.0.1:5000/goods_info/123.123 可以发现参数为float参数是能够正常访问处理的。 测试访问 http://127.0.0.1:5000/goods_info/123 当传递参数为

Django测试开发-1-MVC/MVT的概念

北慕城南 提交于 2020-12-07 02:46:39
1.MVC的简介 m:model,是应用程序中用于处理应用程序数据逻辑的部分 v :view,是应用程序中用于处理数据显示的部分 c :Controller,控制器,接收用户的输入调用模型和视图完成用户的请求,是应用程序中用于处理数据显示的部分 2.MTV的简介 m:model,负责业务对象和数据库的对象(ORM) t:template,负责把页面展示给用户 v:view,负责业务逻辑,并在适当的时候调用M和T 3.MVC/MVT区别在于: Django 视图 不处理用户输入,而仅仅决定要展现哪些数据给用户; Django 模板 仅仅决定如何展现Django视图指定的数据。 4.Django介绍 django 重量级的网络框架,成熟稳定,给我们提供了丰富的功能,鼓励用户使用这些现成的解决方案来快速开发 flask 轻量级的网络框架,提供了较为较完善的web服务器所需的基本功能,同时允许且建议用户自由选择扩展的技术 5.目录结构 (1)工程目录下 __init__.py 初始化文件 settings.py 工程的配置文件 urls.py 工程路由文件 wsgi.py 部署文件 平时不对其进行操作 (2)项目目录下 migrations 目录 放置我们model定义修改数据库的记录文件 __init__.py项目的初始化文件 admin.py 是我们系统的后台管理模块 apps.py

Flask unable to start server using Docker due to ModuleNotFoundError: No module named 'wsgi'

喜你入骨 提交于 2020-12-06 15:56:37
问题 I now deploy my Flask app using Nginx and Docker. My docker is up and running,but I always get 502 Bad Gateway nginx when going one of the endpoint. So I remove all docker and build it again,then I getting this error,when running docker-compose up -d : [2020-03-09 15:00:11 +0000] [1] [INFO] Starting gunicorn 19.7.1 flask | [2020-03-09 15:00:11 +0000] [1] [INFO] Listening at: http://0.0.0.0:5000 (1) flask | [2020-03-09 15:00:11 +0000] [1] [INFO] Using worker: sync flask | [2020-03-09 15:00:11

Flask unable to start server using Docker due to ModuleNotFoundError: No module named 'wsgi'

我们两清 提交于 2020-12-06 15:49:41
问题 I now deploy my Flask app using Nginx and Docker. My docker is up and running,but I always get 502 Bad Gateway nginx when going one of the endpoint. So I remove all docker and build it again,then I getting this error,when running docker-compose up -d : [2020-03-09 15:00:11 +0000] [1] [INFO] Starting gunicorn 19.7.1 flask | [2020-03-09 15:00:11 +0000] [1] [INFO] Listening at: http://0.0.0.0:5000 (1) flask | [2020-03-09 15:00:11 +0000] [1] [INFO] Using worker: sync flask | [2020-03-09 15:00:11

Flask unable to start server using Docker due to ModuleNotFoundError: No module named 'wsgi'

爷,独闯天下 提交于 2020-12-06 15:49:25
问题 I now deploy my Flask app using Nginx and Docker. My docker is up and running,but I always get 502 Bad Gateway nginx when going one of the endpoint. So I remove all docker and build it again,then I getting this error,when running docker-compose up -d : [2020-03-09 15:00:11 +0000] [1] [INFO] Starting gunicorn 19.7.1 flask | [2020-03-09 15:00:11 +0000] [1] [INFO] Listening at: http://0.0.0.0:5000 (1) flask | [2020-03-09 15:00:11 +0000] [1] [INFO] Using worker: sync flask | [2020-03-09 15:00:11

Dynamically update Javascript variables using Jinja?

假如想象 提交于 2020-12-06 08:19:08
问题 I have a web form created that requires template creation by the user. Calling all previous entries that are templates isn't an issue, but passing the information to the form when called seems to be tricky. Basically I want the user to be able to select a template from the dropdown (See the screenshots and stuff below), then based on their selection, update the variables in the script to autofill form data. Right now, it only selects the most recent entry. Is this possible just using python

Python session SAMESITE=None not being set

坚强是说给别人听的谎言 提交于 2020-12-06 07:19:10
问题 I am having issues with chrome and SameSite. I am serving a webpage in a shopify iframe and when setting the session using flask-login, chrome tells me this: A cookie associated with a cross-site resource at URL was set without the SameSite attribute. It been blocked, as Chrome now only delivers cookies with cross-site requests if they are set with SameSite=None and Secure . Secure is set, but I tried to set SameSite in all the possible way, but without effect. I tried setting app.config[