When a library creates an object in the global scope, like CodeMirror for that matter, how do I peek into that object in Angular 2?
Say, I am using ng-codemirror which uses CodeMirror library, which in turn produces CodeMirror object in the global scope. How do I lurk into CodeMirror.modes from DevTools when in an Angular 2 app?
You need to import CodeMirror in your project
import 'codemirror';//or what ever the name is of that library.
Once you have imported code mirror in your project you should be able to have the global scope you are looking for.
Related
I made an implementation change to one of the methods in the native framework. Would I need to recreate bindings, in this case ?
Short answer: likely not
Long answer: Depends, you would need to rebuild the binding only if this change you mention is in the public API signature of the method / property. This is because the bindings matches 1 : 1 (most of the time) what the native API surfaces so for example if your method used to return a NSString and now it returns another class or the selector name changes or the type of any of the parameters changes then yes.
You also would need to rebuild the binding if the binding dll bundles the native library you are using. If you are manually linking the native library (using the additional touch args in your app project) you should be fine.
I am trying to use a shared controller from a module in my app, but I'm not really sure how to do it. Here's what I want to do:
I have two revel apps, a frontend and backend app. The frontend app is used to show the user-facing site, and the backend app is for admin stuffs.
I created a special controller to connect to database as per the booking sample.
I want both the frontend and backend app to use the same controller, to minimize redundancy.
From the sample, when you want to have one controller database, it roughly translate to this:
type DBController {
*revel.Controller
}
type App {
DBController
}
This works when I want to have only 1 app, but when I want to share the controller to another app, I can't import DBController to the app.
Things I've Tried
I tried moving DBController to its own package, and then importing that and inherit from it directly:
// in db.go
package controllers
// import and stuffs
type DBController {
*revel.Controller
}
// in app.go
package controllers
import (
dbc "site.com/modules/controllers"
)
type App struct {
dbc.DBController
// *dbc.DBController
}
This gives me a panic error stating that the route is not found:
panic: Route validation error (in /app/path/routes:7):
revel/controller: failed to find controller App
in both inheriting with and without pointer.
I've also tried Revel's module, with the same code, but different directory and importing via config:
// app.conf
modules.dbcontroller=site.com/modules/dbcontroller
And then in app.go:
type App struct {
DBController
}
But it still didn't work with the same error as before. I'm pretty convinced that the right route is by using module, since the documentation said (emphasis mine):
Modules are packages that can be plugged into an application. They allow sharing of controllers, views, assets, and other code between multiple Revel applications or from third-party sources.
A module should have the same layout as a Revel application’s layout. The “hosting” application will merge it in as follows:
Any templates in module/app/views will be added to the Template Loader search path
Any controllers in module/app/controllers will be treated as if they were in your application.
etc..
But I'm not sure how I can share and derive my controller from here.
TL; DR
How do I share controller in Revel so that I can inherit a controller from other module, roughly like:
import dbc "site.com/modules/dbcontroller"
type App struct {
dbc.DBController
}
so that DBController can be used with several revel apps? Thank you very much.
I am not an authority, but I will make a few observations that might help even though I do not have a complete answer for you.
The first thing about your question that struck me is the use of the term "inherit" -- Go does not support inheritance. It does support embedding. I might have written the question subject as "Reuse controller from module in Revel framework.
Second, I wonder if you are trying to reuse a Revel module between two separate Revel applications or if you are trying to reuse code from a module in two separate parts of one Revel application that just happens to have a front end and a back end. A quick read of the reveal framework makes me think modules were designed for the former, not the latter.
Third, I wonder if perhaps you are confusing files with packages. It was not obvious to me when learning Go that one package can span multiple files.. if the same declaration of "package controller" exists in two files such as db.go and app.go, they are still in the same package.
I'm not clear on how to use the AntiXSS library in my .Net WebAPI 2 project.
I have installed the AntiXSS NuGet package (which gives me v4.3), and have set the encoderType property of httpRuntime in web.config.
Which class should I now use to take advantage of AntiXSS? Does it override the behaviour of System.Web.HttpUtility?
If using the AntiXSS NuGet package, the correct use is to use Microsoft.Security.Application.Encoder.
According to bdorrans of the MS Web Protection Library (AntiXSS) project, you can indeed use HttpUtility once encoderType is set.
However, it shouldn't normally be a concern to encode output from an API. My scenario is that I'm serving a Single Page Application, and was worried I was injecting unsafe values in to the page via my model. But unless injecting values via .html() or .eval(), any malicious values will not be executed on the client.
As I'm writing a Firefox XUL Extension I find that I want to share some functionality (the business logic) across the whole extension. What would be the best place to store this?
Can I create some sort of library (javascript) file which always gets loaded first?
You most likely want to create a JavaScript code module. You can use Components.utils.import() to load it:
Components.utils.import("chrome://myaddon/content/utils.jsm");
And in utils.jsm you define which symbols should be imported by that statement, e.g.:
var EXPORTED_SYMBOLS = ["Utils"];
var Utils = {
};
The module will be loaded when it is first used and stay in memory after that - there will be only a single module instance no matter how many places on your extension use it. Note that I used a chrome:// URL to load the module, this is supported starting with Firefox 4. Documentation recommends using resource:// URLs which is cleaner because modules don't actually have anything to do with the user interface - still, using a chrome:// URL is often simpler.
I would like to be able to build functionality for my application in a plugin style system for a couple reasons:
New projects can choose which plugins are necessary and not have code for functionality that's not needed
Other developers can build plugins for the system without needing too much knowledge of the core workings.
I'm not really sure how to go about implementing this. I would like to have a plugins folder to host these separately but I guess my questions are:
How do plugins interact with the core system?
How does the folder structure work? Would each hold the standard MVC structure: controllers, services, models, views, etc?
I guess if anyone has a tutorial or some documentation relating to this technique that would be helpful. I've done a bit of searching but it's all a little too closely related to the actual code they're working with instead of the concept and I hadn't found anything specifically related to nodejs.
I suggest an approach similar to what I've done on the uptime project (https://github.com/fzaninotto/uptime/blob/master/app.js#L46):
trigger application events in critical parts of your application
add a 'plugins' section in the applicaition configuration
each plugin name must be a package name. The plugin packages should return either a callback, or an object with an init() function.
either way, inject to the plugins the objects they will need to run (configuration, connections, etc) when calling init(), or executing the callback.
plugin modules register listeners to the application events and modify it
Benefits:
lightweight
rely on npm for dependencies
don't reivent the wheel
Create a plugin prototype for the base
functionality, and let the user define its plugin in a module. In the
module the user would inherit an object from the prototype, extend its
functionality, and then export a constructor which returns the plugin
object.
The main system loads all plugins by require("pluginname") and for
each calls the constructor.