What is the most effective method for displaying error messages in Extjs?

I am currently using the store.synch() method to post data, with validation being done on the server side. I am currently displaying error messages in a message box, but I want to explore alternative ways to show errors without having to use markInvalid(). Using markInvalid() would require me to make changes to every JavaScript file and API. Is there any other alternative to markInvalid() that I can consider?

Answer №1

One of the features provided by Extjs data store is its built-in listeners, including the exception listener (specific to ExtJs versions prior to 3.x).

Below is an example of how this listener can be implemented in code:

listeners: { //Exception Handler for the Ajax Request
    exception: function(proxy, response, operation){
        var error = Ext.decode(response.responseText);
        Ext.MessageBox.show({
            title: 'REMOTE EXCEPTION',
            msg: error.message,
            icon: Ext.MessageBox.ERROR,
            buttons: Ext.Msg.OK
        });
    }
}

In addition, there seems to be some confusion about the markInvalid() method.

Answer №2

Greetings Naresh Tank, I have come up with a solution to address your issue by monitoring all ajax requests. This approach allows you to customize the error message regardless of whether it originates from a store or a form.

I trust that this will be beneficial to you.

Here is the code snippet from app.js:

init: function() {
    this.addAjaxErrorHandler(this);
},
addAjaxErrorHandler: function(object) {
    Ext.Ajax.on('requestexception', function(conn, response, options, e) {

        var statusCode = response.status,
            errorText = null,
            captionText = response.statusText;

        if (statusCode === 0 || statusCode === 401) {
            Ext.Ajax.abortAll();
        }
        if(response.statusText==="Authorization Required"){
                Ext.Ajax.abortAll();
        }
        // 404 - file or method not found - special case
        if (statusCode == 404) {
            Ext.MessageBox.alert('Error 404', 'URL ' + response.request.options.url + ' not found');
            return;
        }

        if (response.responseText !== undefined) {
            var r = Ext.decode(response.responseText, true);

            if (r !== null) {

                errorText = r.ErrorMessage;
            }

            if (errorText === null)
                errorText = response.responseText;
        }

        if (!captionText)
            captionText = 'Error ' + statusCode;

        Ext.MessageBox.alert(captionText, errorText);
    },
                object);
    Ext.Ajax.on('requestcomplete', function(conn, response, options, e) {

        var statusCode = response.status,
            errorText = null,
            captionText = response.statusText;

        if (response.responseText !== undefined) {
            var r = Ext.decode(response.responseText, true);

            if (r !== null && r.success === false) {
                try{
                    if(typeof r.data[0].idUsr !== 'undefined')
                        return;
                }catch(e){}
                errorText = r.msg;

                if (errorText === null)
                    errorText = response.responseText;
                if (!captionText)
                    captionText = 'Error ' + statusCode;

                Ext.MessageBox.alert(captionText, errorText);
            }
        }
    },
                object);

};

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Refresh meta tags in a Next.js/React app

In the process of optimizing a website for SEO, I am facing the challenge of updating the meta description's content dynamically without using any third-party libraries. While I have successfully implemented the functionality, it currently requires a ...

Angular, JavaScript, and PHP are three powerful programming languages that

This file contains HTML code <ul class="list"> <li id="numword" data-score="{{item.score}}" class="" ng-repeat="item in words track by $index"> {{item.word}} {{item.score}} </li> </ul> Here is the visual representa ...

Tips for transforming an Observable stream into an Observable Array

My goal is to fetch a list of dogs from a database and return it as an Observable<Dog[]>. However, whenever I attempt to convert the incoming stream to an array by using toArray() or any other method, no data is returned when calling the retrieveDo ...

In next.js, when using the DELETE method, make sure to utilize a query parameter rather than

As I work on developing an API, I have encountered an issue with the delete functionality not functioning as expected. When sending a request, I receive a response from this URL: http://localhost:3000/api/admin/categories?id=1 instead of from this URL: ht ...

Dynamic presentation created with Serif software

As a newcomer to web coding and one of the older generation, I recently created a basic .swf slideshow using Serif's graphic software. However, I realized that it does not display on an Apple iPad. You can experience this issue quickly here. My questi ...

Create names for links using jQuery based on the data received from an AJAX response

I am currently utilizing the jQuery UI tooltip script available at this link. As a result, I have tooltip links with varying "data-id" attributes like so: <a tooltip-link data-id="12555"></a> <a tooltip-link data-id="38"& ...

Arrange the Proxy Array of Objects, the localeCompare function is not available

Encountering an error while attempting to implement ES6 arrayObj.sort(a,b) => a.property.localeCompare(b.property) syntax: Getting TypeError: a.property.localeCompare is not a function. Suspecting that localeCompare might not be in scope, but unsure ...

Preserving quotation marks when utilizing JSON parsing

Whenever I try to search for an answer to this question, I am unable to find any relevant results. So please excuse me if this has been asked before in a different way. I want to preserve all quotation marks in my JSON when converting from a string. In m ...

Switch over to TypeScript - combining Socket.IO, Angular, and Node.js

This is the code I'm using for my node server: import http from 'http'; import Debug from 'debug'; import socketio, { Server } from 'socket.io'; import app from './app'; import ServerGlobal from './serve ...

`There is a delay in rendering the background image on Chrome`

Once I apply a class to my button element using JavaScript, the background image (.gif) that is supposed to display afterwards takes an unusually long time to render. The button serves as a form submission. Upon being clicked, a class of "clicked" is dyna ...

Automatically update the Vuex state with dynamic data

In the root component, I am looking to load a different version of state based on a specific 'data' variable. App.vue: export default { store: store, name: 'app', data() { clientId: 1 } } store.js: export const store = ...

Tips for exchanging JavaScript variables with PHP using AJAX

Hey there, I'm new to JavaScript and I've hit a roadblock with passing variables to PHP using Ajax. <script> $date = "123"; $.ajax({ url: './record.php', type: "POST", ...

Creating a plotly.js integration for nuxt SSR: A step-by-step guide

Currently facing issues with setting up plotly.js in my nuxt project. Despite trying various approaches, I keep encountering the error message self is not defined. Installing both plotly.js and plotly.js-dist did not resolve the issue. My attempt to creat ...

Executing two SQL queries simultaneously in NodeJS can be achieved by using a single statement

app.get("/total", function(req,res){ var q = "SELECT COUNT(*) AS new FROM voters_detail WHERE parties LIKE '%BJP%'"; connection.query(q, function(err, results){ if(err) throw err; var hello = results[0].new; res.send("BJP Was Voted By ...

How does Chrome have the capability to access the gist json file? Isn't that typically not allowed?

Fetching a JSON file from Github Gist can sometimes be straightforward, but in certain situations, I have faced difficulties due to CORS restrictions. This has led me to resort to using JSONP instead. Can you shed some light on why this is the case? ...

Retrieving the attributes of a JSON object based on their names

I'm currently working on storing video information using JSON. I've managed to successfully read the JSON file, but I'm facing some challenges when trying to access the properties of the object. Specifically, I'm struggling with accessi ...

Wrap the words around to fit a rectangle with a specific ratio, rather than a specific size

Does anyone have a solution for breaking text at word boundaries to perfectly fit a rectangle with a specific approximate ratio, such as 60:40 (width:height)? Please note that this is not just about setting a width limit (e.g. 80 characters or 600px) and ...

Disable checkboxes upon page initialization

I am working with a form that includes checkboxes. Whenever the page loads, clicking on the checkboxes automatically checks them. However, I am looking for a solution where the checkboxes are disabled or not clickable during the page load process. Once th ...

Issues with Await and Async functionality in Angular and Ionic 4 causing unexpected behavior

Struggling to show error messages during the sign-up process? Constantly encountering the same issue in your code? The error TS1308 is throwing you off: 'await' expression is only allowed within an async function. Take a look at this problemati ...

Creating a JSX.Element as a prop within a TypeScript interface

I need to create an interface for a component that will accept a JSX.Element as a prop. I have been using ReactNode for this purpose, but I am facing issues when trying to display the icon. How can I resolve this issue? export interface firstLevelMenuItem ...