I have an ideal to develop social network like open source Phpfox, SocialEngine (on Php). I want to develop API by using Node.js. Can I use directus to develop complicated system like that? Can directus allow me to write custom code for complicated logic. Sorry for my bad English.
Absolutely! Directus doesn't do anything in particular with your data, it's completely yours and if you consider writing raw SQL queries then Directus will continue to work in the same way.
Related
I'm aware of Etherscan's capability for interactions with smart contracts on the Ethereum network, but I wonder if there is any other way to read and write from smart contracts.
I'd expect an improved UI/UX usability, allowing input validation, adding documentation on top of the contract etc, yet I couldn't find any other service providing it.
You could use https://remix.ethereum.org/
There is no service that I know that can provide documentation on top of the contract.
But, it's possible to develop one. Are you interested in how it can be done?
The only one I know of is Remix. This is a great tool for smart contract testing and interaction
And if you are planning to develop your own UI with an API. This is not the exact solution but check out drizzle. It has some good built in features which will get you started on the front-end parts and showing blockchain data
Both tools presented below load the ABI automatically from the contract address.
eth95.dev
There is one that looks like old Windows 95 app. Pretty cool.
https://eth95.dev/
mycrypto.com
https://app.mycrypto.com/interact-with-contracts
Recently, I found myself wanting to develop a web application using real-time technologies. As far as I see, I have two ideal solutions.
Use WebSockets. (in my case Socket.io)
use a real-time database like RethinkDB (I guess stuff like Pusher and PubNub also fall into this category too)
I am lost, however. What are the technical differences between these two solutions? When should I prefer one over the other?
They actually work really well together. Using RethinkDB changefeeds to watch for changes in the database and then using socket.io to pass those changes to the client(s) is a good way to use them in tandem. I'd recommend taking a look at Jorge Silva's answer to this similar question.
socket.io vs RethinkDB changefeed
I was only familiar with this because of a tutorial I did with an interesting tech stack of React, Redux, RethinkDB, Express, & Socket.io. I'm not sure what you're using for your front-end/view layer but this might be helpful for learning how to integrate RethinkDB+Socket.io
http://webapplog.com/reactive-web-stack/
Good Luck!
I am trying to see if I can create a simple website, like a blog, using only Ruby. No Rails or a database or outside web servers. I plan to store the data in a file for persistence.
I wanted to use TCPServer, CGI, and Net::HTTP.
Is there an easier way I can use?
There are a lot of moving parts when designing a website.
Depending on the purpose of the exercise, you might want to consider using a very simple web framework like Camping, Sinatra, or Ramaze. This is probably the best solution if you're trying to get a top level understanding of web programming because it only has exactly what you need (Camping is less than 4k!) and handles stuff like routing.
Building a web server is more an exercise in HTTP parsing. You might want to omit the framework and try to build something on top of Rake (an API for lots of popular web servers) and a simple web server like Webrick or Thin.
You could also try Espresso
It is easy to learn and fast to run.
And offers all the liberty you need for creation process.
Also it has no hidden "fees", everything is transparent.
Hy,
I'm implementing an IMAP client as a Mac OSX application using MacRuby.
For the sake of offline availability, I wanted to allow fulltext indexing and attribute based indexing of all messages. Attributes include common E-Mail stuff like from:, to:, etc...
This would allow for advanced results sprinkled with faceting, analytic calculations and such.
Now I'm unsure about the choices and good practices when it comes to integrating such a search feature. I have a strong web development background, therefore my intuitive action would be to setup a Solr server and start feeding it with data. This might just work theoretically, as I could write an Agent that manages the solr instance for my application in the background. But to me, this approach seems like an infrastructure hassle.
On the other side, I've read about people using the FTS3 functionality from SQLite. This approach is easily accessible by CoreData. I haven't used SQLite's FTS3 but I don't think it is as powerful as Solr can be.
What is your weapon of choice for a use case like mine?
I'm mainly interested in solutions that are actually in use by Objective-C/Cocoa/MacRuby developers.
In you're going to develop the app with Ruby give a try to picky. It is very simple to use.
There is an Objective-C Lucene port
http://svn.gna.org/viewcvs/etoile/trunk/Etoile/Frameworks/LuceneKit/
I have not used it, but in your situation, I'd at least check it out. In my experience, SQL based full text search can't compete with Lucene, but haven't tried SQLite for this.
EDIT: just noticed the ruby tag -- this started out as port of Lucene
https://github.com/dbalmain/ferret
I want a real and honest opinion what do you think of Google Visualization API?
Is it reliable to use becasue when i was reading the documentation i noticed that there are alot of issues and defects to overcome and can i use it to retrieve data from mysql database.
Thank you.
I am currently evaluating it. As compared to other javascript data visualization frameworks, i think it has a lot going for it:
dynamic loading is built-in
diverse, many things to choose from.
looks really great!
framework mostly takes care of picking whatever implementation fits the current browser
service based, you don't need to download anything in advance
unified data source: just create one data table, and have multiple visalizations draw from that data.
As a disadvantage, I'd like to mention security. I mean, because it's all service based, it is not so transparent what happens when you pass data into these API calls. And as far as I know, the API is free, but not open source, so I can't really check what is going on behind the covers.
I think the Google visualization API really shines if you want to very quickly whip up a visualization gadget for use in a blog or so, and you are not interested in deploying all kinds of plugins and libraries (for eaxmple, with jQuery based frameworks, you need may need to manage multitple javascript libraries that work together to deliver the goods). If on the other hand you are creating an application that you want to sell, you might want to keep more control over what components you are using, and I would probably consider using something like Flot
But like I said, I am only evaluation atm, I am not using this in production.
Works really great for me. Can be customized fairly easily. Haven't seen any scaling issues. No data is exposed so security should not be an issue. - Arunabh Das
One point I want to add here is that, Google Visualization API cannot be downloaded, its not available for offline usage. So application which is going to use it must be always connected to internet, otherwise I think it wont be able to render charts. Due
to this limitation, this API cannot be used in some applications for which internet connection is not available.
I am currently working on a web based application that will have the Google Visualization API added to it and from the perspective of a developer the Google Visualization API is very limited in what you can do with each individual Chart and if I had a choice I would probably look at dojox charting just because of the extra flexibility that the framework gives you.
If you are doing any kind of large web application that will use charting extensively then I would not recommend the Google Visualizations API it does not have enough flexibility for a large web application.
I am using Google Visualization API and I want to stress that they still won't let you download it, which means if their servers are down, your app will be down if you depend on it. I have been using it for about 4 months, and they have crashed once me once so I'd say they pretty reliable and their documentation is really nice.