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Heroku/devise - Missing host to link to! Please provide :host parameter or set default_url_options[:
I am trying to push my app on heroku. I am still in dev.
I use devise with the confirmable module.
6 Answers
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How to define custom configuration variables in rails
I was wondering how to add custom configuration variables to a rails application and how to access them in the controller, for e.g I wanna be able to define an upload_directory in the configuration files say development.rb and be able to access it in one of my controllers.
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AppInventor2中的二进制数据以什么样的形式传递？字节列表、字节数组是什么...
1、byte[] 类型（字节数组）的字段：App Inventor 无法直接处理字节数组，但它们可以作为扩展之间的通用 Object 类型变量进行交换。
MQTT拓展中的字节数组的处理方式就是这种，直接转换成byte[]：
@SimpleFunction(description = "Publishe...
How can Xcode 6 adaptive UIs be backwards-compatible with iOS 7 and iOS 6?
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Changes made to the UI with Size Classes in Interface Builder DO appear correctly on iOS 7 devices and the Preview in Xcode. For example, I changed some Auto Layout constraints and font sizes for Regular height Regular width and those changed constraints are visible in the iPad Simulator r...
Ship an application with a database
If your application requires a database and it comes with built in data, what is the best way to ship that application? Should I:
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How to go back to previous page if back button is pressed in WebView?
I have an app in which I have a WebView where I display some websites. It works, clicking a link in the webpage goes to the next page in the website inside my app. But when I click the phone's back button, it takes me straight into my app. I want to go back to the previous page in the website ins...
HTTP Error 503. The service is unavailable. App pool stops on accessing website
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One possible reason this might happen is that the Application Pool in IIS is configured to run under some custom account and this account either doesn't exist or a wrong password has been provided, or the password has been changed. Look at the advanced prop...
android.content.res.Resources$NotFoundException: String resource ID #0x0
I'm developing an Android app which reads data from MySQL database and I faced this error. I have this XML layout:
7 Answer...
In Node.js, how do I “include” functions from my other files?
Let's say I have a file called app.js. Pretty simple:
26 Answers
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MQTT报文多个数据的提取 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
想做个订阅MQTT，采集的APP，怎么才能正确的连接mqtt服务器并订阅主题，把对应的数据按顺序提取到标签1，标签2，标签3……我把画面和mqtt订阅的数据发上来，求解救！！
{
"RTValue": [
{
&nb...