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How do you write a migration to rename an ActiveRecord model and its table in Rails?
...ble_name
end
end
I had to go and rename the model declaration file manually.
Edit:
In Rails 3.1 & 4, ActiveRecord::Migration::CommandRecorder knows how to reverse rename_table migrations, so you can do this:
class RenameOldTableToNewTable < ActiveRecord::Migration
def change
rena...
App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP ...
android asynctask sending callbacks to ui [duplicate]
...tivity I'm initializing the asynctask, and I want the asynctask to report callbacks back to my activity.
Is it possible? Or does the asynctask must be in the same class file as the activity?
...
How to add local .jar file dependency to build.gradle file?
...
If you really need to take that .jar from a local directory,
Add next to your module gradle (Not the app gradle file):
repositories {
flatDir {
dirs 'libs'
}
}
dependencies {
implementation name: 'gson-2.2.4'
}
...
Easiest way to pass an AngularJS scope variable from directive to controller?
...est way to pass an AngularJS scope variable from directive to controller? All of the examples that I've seen seem so complex, isn't there a way I can access a controller from a directive, and set one of it's scope variables?
...
How can I create an Asynchronous function in Javascript?
...
You cannot make a truly custom asynchronous function. You'll eventually have to leverage on a technology provided natively, such as:
setInterval
setTimeout
requestAnimationFrame
XMLHttpRequest
WebSocket
Worker
Some HTML5 APIs such as the File API, Web Database API
Technologies that support...
App Inventor 2 LLMAI2Ext 自研拓展：接入DeepSeek、Kimi、通义千问...等国...
创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP ...
What's a redirect URI? how does it apply to iOS app for OAuth2.0?
...-my-ninth-grader.html
The redirect URI is the callback entry point of the app. Think about how OAuth for Facebook works - after end user accepts permissions, "something" has to be called by Facebook to get back to the app, and that "something" is the redirect URI. Furthermore, the redirect URI shou...
HTTP Basic Authentication - what's the expected web browser experience?
When a server allows access via Basic HTTP Authentication, what is the experience expected to be in a web browser ?
6 Answ...
App Inventor 2 数学积木的9个隐藏用法：随机种子、位运算、取整陷阱，踩中...
...致。
实际用法：在 Screen.Initialize 里设一次种子，整个 App 的随机行为就可复现了。机器学习预处理、算法竞赛练习、课堂演示，这个块都是关键。
技巧3：round 的"银行家舍入"坑了多少人
App Inventor 2 的 round 用的是&...