Front-end web development is the practice of converting data to a graphical interface, through the use of HTML, CSS, and JavaScript, so that users can view and interact with that data.
Actually my logic is when I enter the input on the text field in browser, the entered input to be print on the next page but I am getting "Undefined". How to i do it.
https://www.youtube.com/embed/vO6kz1G4eVg [This is an embedded link, but you cannot view embedded content directly on the site because you have declined the cookies necessary to access it. To view embedded content, you would need to accept all cookies in your Cookies Settings]
IRIS provides us with anti login CSRF attack mitigation, however this is not the same as a CSRF attack, as login attacks only occur on the login form. There are currently no built-in tools to mitigate CSRF attacks on api calls and other forms, so this is a step in mitigating these attacks.
See the following link from OWASP for the definition of a CSRF attack:
I've got a csp page that has successfully set up a websocket connection to a Cache class. When the websocket object's close function is triggered at the browser I was expecting one of the class' methods to fire at the server. The onclose method is triggered at the browser but nothing at the server. Is a method supposed to fire at the server?
Thanks,
Dan
Cache for Windows (x86-64) 2015.1.4 (Build 803_6) Tue May 15 2018 12:08:36 EDT
CSP pages extend %CSP.Page. What about html/css/js/etc that are hosted on the same web application? Is there any way to override how they're processed like with how you can override a CSP page and CSP REST logic?
The Widgets Direct sample application highlights many aspects of how to use InterSystems technologies to build a modern web application. Features include:
I'm curious about the development processes of those of you using Angular.
The starting point is that, somewhere, there lives an Angular project full of (mostly) typescript files. Eventually, those files need to be built, and the resulting built files served up to a browser.
I have a server configuration in a CSP Gateway installed on a PC (let's call it S2) different from the main one (let's call it S1). This configuration allows me to access a web application that is installed on S1, from a client C asking S2 for this webapp. But for now it works only in HTTP between C and S2, and we would like to use HTTPS (as it already works between S2 and S1).
I have a query that I would like to have refreshing at certain intervals lets say every 30 seconds with out refreshing the page content using the META TAGS
refreshes the whole page but I have a jquery function that will run at those intervals that I can use the problem is getting the jquery to call my COS function or is the way to do it with pure COS
I'm having odd behaviors on my EC2 hosted IRIS Community instance.
When I configure a "custom login page" in the System Management Portal for my web application I'm seeing a few different behaviors that are under documented (and also undesired)
Hello Cache Developers: I was curious if anyone has ever created a TWAIN interface to their Cache Application? I am new to TWAIN and hence the reason for this question. From what I understand, TWAIN is software used by various digital imaging software and TWAIN provides an API for applications to call to be able to import images into their application. I work with a healthcare application and was wondering what types of things are required for a Cache Web Application to call the TWAIN API to be able to load images into a Cache table. Any input, sample code, or suggestions is apprec
The goal of this post is to discuss working with Websockets in a Caché environment. We are going to have a quick discussion of what websockets are and then talk through an example chat application implemented on top of Websockets.
This post is intended to guide you through the new JSON capabilities that we introduced in Caché 2016.1. JSON has emerged to a serialization format used in many places. The web started it, but nowadays it is utilized everywhere. We've got plenty to cover, so let's get started.
https://www.youtube.com/embed/r42coiZN7G4 [This is an embedded link, but you cannot view embedded content directly on the site because you have declined the cookies necessary to access it. To view embedded content, you would need to accept all cookies in your Cookies Settings]
InterSystems products (IRIS, Caché, Ensemble) already include a built-in Apache web server. But the built-in server is designed for the development and administration tasks and thus has certain limitations. Though you may find some useful workarounds for these limitations, the more common approach is to deploy a full-scale web server for your production environment. This article describes how to set up Apache to work with InterSystems products and how to provide HTTPS access. We will be using Ubuntu, but the configuration process is almost the same for all Linux distributions.
Not everyone knows that InterSystems Caché has a built-in tool for code profiling called Caché Monitor.
Its main purpose (obviously) is the collection of statistics for programs running in Caché. It can provide statistics by program, as well as detailed Line-by-Line statistics for each program.
Using Caché Monitor
Let’s take a look at a potential use case for Caché Monitor and its key features. So, in order to start the profiler, you need to go to the terminal and switch to the namespace that you want to monitor, then launch the %SYS.MONLBL system routine:
This code snippet provides a ZEN page that downloads a stream from its database directly:
/// We assume that you have stored your data within this schema:
/// MyApp.Model.Storage: Filename,FileSize,Content,ContentType
Class zen.downloadStream Extends (%ZEN.Component.page,%CSP.StreamServer)
{
/// Wrapper to get the id of the download, we assume that the id is passed to this zen page
/// as a URI parameter, i.e.: MyApp.Downloads.cls?OID=1234
ClassMethod GetId()
{
Quit $Get(%request.Data("OID",1))
}
/// Set the appropriate header for the file.
ClassMethod OnPreHTTP() As %Boolean
{
Set tId = ..GetId()
If ##Class(MyApp.Model.Storage).%ExistsId(tId) {
Set tStream = ##Class(MyApp.Model.Storage).%OpenId(tId)
// You could "guess" the content type by its file extension
// or you can store it (before) in the database separately (like in this example).
// Set Extension = $Piece(tStream.Filename,".",$Length(tStream.Filename,"."))
// Set ContentType = ..FileClassify(Extension)
Set %response.ContentType = tStream.ContentType
Do %response.SetHeader("content-disposition","attachment; filename="_tStream.Filename)
Do %response.SetHeader("Content-Length",tStream.FileSize)
}
Else {
Set %response.Status="404 File Not Found"
Quit 0
}
Quit $$$OK
}
ClassMethod OnPage() As %Status
{
Set Download = ##Class(MyApp.Model.Storage).%OpenId(..GetId())
Do Download.Content.OutputToDevice()
Quit $$$OK
}
}
In our last lesson, we added a relationship between 2 persistent classes. We are clearly going to need to start creating REST Services to expose CRUD operations for each of these classes, but before we do that, we should really finish defining our linkages. We added code to our Widget toJSON to spool off related Accessory data, so we should really do the reciprocal and allow Accessories to return all Widgets that are compatible.
I want to do something like the above sample from a Google Storage JSON API. I have a call to Write obj.%ToJSON() followed by return ..ReportHttpStatusCode(..#HTTP404NOTFOUND) however the HTTP Status code is always 200. If I remove the Write obj.%ToJSON() statement it returns a 404 status with no body. How do I return both?
I am using &html<> to output some CSS to my page (which is a class-based and not a tag-based page), and the selectors contain the '>' character which the compiler chokes on. How can I escape the '>' so it still displays as such in the web page source but doesn't trip up the compiler?
I faced with the issue when WebSocket connection just fails without any errors if I send data with size 384 bytes and more (In binary mode the same). As I know by standard WebSockets frame does not have such limitation. Is there any way how to decrease it? This limitation too small, it is too difficult to fit this size and needs to send data much more often than I expected. Tested with Caché 2016.2, 2017.2 and IRIS 2018.1.
By update
Open Exchange app
