Is it possible to build a realtime app using AngularJs with a mysql database?
I've been reading thousands of tutorials, but they are all focused on express, nodejs, etc.. didn't found any documentation on wheter it's possible or not. I tried to take a look at the socket.io docs, but still didn't found anything relevant to this question.
I didn't tried anything yet because of this. I use a webApp based on AngularJs on a apache server (local).
Where should i start to be able to build a real time app using these tools i have?
Do i really need to use a node/express server?
What are the main consideration i need to do before taking this step?
Is there any documentation i should read?
I need to do this real time because it involves product orders, call center, ticket system, etc.. So everytime there is a new ticket is opened/changed, new order arrives, etc.. I need to make the user aware of this, without the need to refresh the page.
Or if someone could give me a further explanation of this concept and how to get started, it will be great.
You can run angular on top of any backend, although most examples push towards REST. If you want your app to feel like a real time application, using WebSockets is a likely improvement.
WebSockets play nice with Angular, look at https://github.com/wilk/ng-websocket for example. A back-end in Node will work, but many other backend techs will do equally well.
Here is a decent tutorial using MySQL, NodeJS, and Angular: https://codeforgeek.com/2015/03/real-time-app-socket-io/
I recommend that you keep using a webserver like Apache (my personal preference is Nginx). You can proxy API and socket requests to Node, and serve static resources for the app from a folder.
Check out https://httpd.apache.org/docs/2.4/mod/mod_proxy_wstunnel.html if you stay with Apache. Check out http://nginx.org/en/docs/http/websocket.html is you go for nginx.
Without a webserver, you'll have to either:
serve your static resources with Node (polluting your server project with client code), or
work with different ports, risking the app becomes unusable in client environments, or
work with different domains, giving you a CORS head-ache.
Although I don't have much experience with Node, MySQL with Node.js should help you out a bit.
You'll want to move away from Apache if you want to do websocket stuff with Socket.io
Yes, it is possible to create a software with AngularJS in the front end and any other server side language that speaks to MySQL. Few months back I worked on a software with Java Spring Framework in the backend with MySQL database and AngularJS with bootstrap in the front end. You could start by following the MVC pattern, where your views can be served as AngularJS and your Controller can be in any server side code, with MySQL database.
Related
I've recently begun developing with NodeJS and ElectronJS to create some pretty nifty cross platform software. I want to take it a step further and integrate some database functionality.
While I'm aware that there are mysql packages available to install, I cringe at the idea that anybody can just unpack my asar.app file and see all of the connection details, including username, password, database name, table name, and other sensitive content that you really don't want to expose to people clever enough to break into your app's source code.
I've tried searching extensively on solutions to this problem, which I was surprised to find very little about. How do WhatsApp and Slack secure connections to their database if they were also built with ElectronJS?
Any and all resources are greatly appreciated. I basically want to be able to connect to a production server SQL database in an ElectronJS app without leaving some security backdoor to anybody who cracks the ASAR file.
Thank you!!
For this scenario, I suggest you to use a RESTful web service architecture. Basically you need 3 component, RESTful web back end, client application(your electron) and the database service( see the following image ; source:phppot.com) .For this I suggest you to use nodeJS backend and create a webservice using expressJS . You can define Restful (GET, POST,UPDATE, DELETE) API for each services.
For ex: To get some data from your db, you can send a GET request to the following path <yourdomain>:<port>/api/v1/getyoursomthin using your electron app. Your express app process the request and get the relevant data from the data from the database (Tutorial). So your app can get the respond from the server and display to the user. I will add link to some tutorials. You can find and learn more by google :)
Web: Build a simple app using Node JS and MySQL.
Express.js Tutorial: Build RESTful APIs with Node and Express
( source:phppot.com)
So I am currently learning react and webpack so that I can implement it into my current site. I already have an established phpmyadmin database that pumps out information that I want to appear on my site but I cant figure out how to hide my username and password to the database when programming it. I am used to using php to interact with my database bus since react is purely javascript I am not sure what to do.
You need to have a server running that talks to your database and to your react app. It sounds like you might have this in the form of a PHP application. Your PHP application will need to expose data over HTTP endpoints that you can then fetch from inside of your React application.
This tutorial: https://www.techiediaries.com/php-react-rest-api-crud-tutorial/ would be a great place for you to get started.
I agree that you need to "have a server running that talks to your database and to your react app" as the accepted answer states. On the other hand this does not mean that you have to code it from scratch.
If you don't want to program PHP for the back-end, then you may as well configure software from the list of 'automatic APIs'. An automatic API is "software that turns your database into a REST/GraphQL API".
I'm the author of PHP-CRUD-API, which is an 'automatic API' and I think it suits your needs, but you may as well use any other software from the above list.
A customer of mine asked me a better and faster solution to update it's real estate web site as he and his employees don't want to connect to the web site and update one by one the ads as they don't want to loose time waiting the normal latency of the internet.
I firstly solved the issue by building a PHP script that imported an Excel file into the web site's MySQL database and it worked greatly. But the problem were pictures that have still to be uploaded separately. I then wrote a PHP script that uploaded the pictures using ajax and drag&drop so the user could select multiple pictures and upload them at once. And this worked too, but the customer is still not completely satisfied as he says this solution is quite 'patched'.
I then thought about a desktop application - a kind of local database (could be SQLite) - that the user keeps updated locally and only at the end of the day the app connects to the remote server and updates the db and uploads the pictures.
My question is: what EASY desktop high level programming language I could use to do the job? Do you know any RAD (visual IDE) programming language able to connect to a remote mySQL server and upload data via a simple custom GUI?
I tried RealBasic and PureBasic but I did not work it out. I thought about building the app in PHP and then convert it to EXE but I did not tried yet.
Please don't suggest me Java, C or Delphy as I'm looking for something very easy.
Thank you
Have you considered a client side javascript/html app that syncs with the server, since you're already familiar with the platform? If one browser better supports what you want to do (Firefox has some extension perhaps vs Chrome, or whatever), than mandate that to run this app (rather than worrying about being portable across browsers).
All of the browsers can have client side storage now, and you can just do things locally, and finally push them to the server "all at once".
If your client is using a Windows platform, you could use IronPython (.NET), VB.NET, or C#. These all allow you to create windows/forms visually in Visual Studio. If you're not already familiar with the .NET platform I'm not sure how 'easy' this will be, but I think that's going to be true for most other platforms as well.
That being said, it sounds like your existing solution is probably the best idea - perhaps if you can make your solution feel less like a "patch" they will be satisfied.
No reason you can't use Purebasic if that's what you're comfortable with. There are HTTP file upload examples on the PB forums.
I've used Purebasic for years but I'd recommend spending the time to get to know C#/.NET - it's a world of difference and once you learn it stuff like this is pretty easy.
I am trying to configure Apache2 so I can use MySQL for authenticating users to access certain pages. Also authorization needs to work so different groups can reach differen pages.
Now, I have googled a lot but can't find out how to do this. At least not for the configuration I am having. There doesn't seem to be any version of mod_auth_mysql that supports my configuration.
OSX 10.6.4
Apache 2.2
Now, how do I achieve this not creating my own login-application in php but using the built in support of Apache2? I'm totally stuck on this one...
Thanks in advance!
Regards,
Niklas
I also would like to use a taylormade login page, not pop-up
....
how do I achieve this not creating my own login-application in php but using the built in support of Apache2
Short answer is that you can't. Unless you rewrite the Apache source code or create your own module, you can't mix HTTP based authentication with non-pop-up login prompts.
However if you are using PHP then a relatively low impact solution would be to use auto-prepend to prefix every protected page with a check on the users session. Obviously this would need a bit more thought if it is to be applied to files other than PHP source files (it'll work perfectly well if you tell Apache to apply the php engine to, say .gif files, but your script will need to detect and return the appropriate mime type).
A simpler solution might be to put a tool like squid in front of the webserver as a reverse proxy, then make the session handling data available to the squid url-rewriter.
You can build mod_auth_mysql from the source. Have a look at this post.
I you want your own log-in page, you cannot use Apache to do authentication.
Apache authentication uses the Authentication portion of the HTTP standard, and as a result you're reliant on the browser to handle the interaction with the user. There are plugins (like mod_auth_mysql) to use a database as the backend for this, but Apache can't ask the user for their credentials any other way.
The fastest approach might well be to set up Drupal or Joomla, which will get you user and group management as well as full content editing, in a way that will let you control who can edit what.
C# 2008
I have developed an application that need to connect to a web server in order to work. If the web server goes offline. The the app will have to be notified so that the user using the app can know what happened.
This application will be downloaded from the internet from our clients web site. So hundreds or thousands of users could have it.
I was thinking about pinging the web server maybe every 5 seconds. However, with 100's or 1000's apps would overload the web server.
Someone has told me about ESB would be right for this problem. The way I am thinking to use this, and I am not totally sure. Is to have every app to subscribe to the ESB. If the web server goes offline it will send a message to all the apps.
However, I understand that ESB is very big and complex and maybe this is overkill for my problem.
Am I understanding correctly.
If ESB is not the correct choice is there another design pattern I could use?
Many thanks
It sounds inappropriately out of scope to spec an ESB for this simple purpose. Why not just have the client machines figure it out as they periodically need to access the website? Instead of pinging the web server over and over, in the course of their normal activities they will need to access the web server for any normal reason, if they get an error response they can branch down the "web server is down" code path.
An ESB sounds like the wrong solution.
Two possibilities come to mind:
(1) If the user doesn't need to know they're offline in real-time, defer detection to usual error handling when you try and access the server.
(2) If you must know real time, use a small proxy at each client site so that only the proxies need to ping your server, not every desktop.