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I'm developing a cart that needs to calculate tax and am looking for a 3rd party tax service to handle the calculations.
I've used Avalara in another app, but it's somewhat miserable since I have to use the Rjb gem with their java library.
Does anyone have a recommendation for a tax service that works well with rails?
I don't know what capabilities for tax calculations are in the library, but ActiveMerchant is an awesome utility for E-Commerce applications. It is well documented and in active development.
Its variety of payment processors might provide you with the calculations you need.
http://www.activemerchant.org/
We use StrikeIron in our applications.
To be honest, it's not the most awesome interface to interact with (unless you really love SOAP). You still have to handle all tax logic in your application, of course, but if you need tax rates broken down by state, county, and city, it should handle your needs fairly well.
This being said, I have yet to find a tax service That Just Ties into Rails™. I'm curious to see what others will have to say in regards to this.
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I am developing one application for iOS. In that user can purchase doctor services. I dont have any idea about payment gateways. So, please suggest me which is the best payment gateway method and how to implement that in my iOS app. ( I am from India), i heard payment gateway methods depends upon the country.
There are quite a few - also depends on your country as not all providers cover all countries. Take a look at:
https://stripe.com/
https://www.braintreepayments.com/
and probably http://www.paypal.com
What you want is something that's easy to code for (securely) in iOS. All the above (as well as many others) have APIs and sample code that make connecting to process payments easy and secure.
EDIT
Just seen you've added that you're in India. Assuming that means that you want to process payments in India, then I think your options (as at July 2014) are more limited. Certainly stripe and braintree don't cover India. I believe PayPal do (although maybe not with their latest APIs), so that might be your best bet.
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I need to write the backend for an event ticket selling system. Some companies would connect to the service in order to check for ticket availability in certain venues, book tickets and so on.
Reading about Erlang I though it could be a good choice since the system will have to support high concurrency, high availability but I don't know If it's a good choice for this problem domain.
Any help would be really appreciated. Thanks!
Erlang could be a good choice, yes, it sounds like something it would do a very good job.
But it's going to be hard for anyone here to be of much value for your decision, as you should also consider the knowledge level of the team, time & budget constraints, etc.
Ultimately, the best people to help you make this decision are the people in your team.
I suggest you take a look at OTP's finite state machines as I think it suits perfectly a ticket booking system.
I believe you can find a lot of examples either in the doc or on the web.
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I'm developing web-application (and also native iOS app) that uses images from different websites. I can't avoid using these images, so I need to know more about copyright and authorship.
So, the question is: how can I use images from other websites legally? (these images, of course, not from photostocks or other paid-sites). Interested in fashion industry, I need to use images of clothes of famous designers. If I would declare source link to each pic, will it be ok? Or may be use "User Agreement" that tells full list of used sources?
For better understanding my question, some examples: websites - news aggregators, blogs and so on.
This is a topic that books have been written about, and law school courses taught about. It's not something you're going to find a definitive answer for here.
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I am new to the rails world and am in the process of setting up a small rails app for a client. One of the requirements is that the user enters their credit card which gets charged for a specified amount.
I haven't had much experience with payment systems. I believe active merchant gem can be used for this purpose but how does actually charging the card work out and for testing purpose will I be able to charge a dummy account? From your experience, is it safe to go with a provider like paypal?
You should checkout ActiveMerchant.
FYI Peepcode has a post on this:
http://peepcode.com/products/activemerchant-pdf
Watch out, if you store or accept credit cards directly on your website you need to be PCI DSS compliant.
There are a number of solutions out there to overcome this issue, the first notably is to delegate the payment infrastructure to a third party like Recurly, since it also operates in Europe with different providers, but it's more on recurring payment.
The primary choice in US would be Braintree or the newest Stripe.com.
Braintree has another solution to keep the user never leave your site, it's called Transparent Redirect.
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This is something I've been wondering for a bit.
If you were to write a successful site/app, would writing it in rails give you and advantage, say for getting the app noticed, as opposed to writing it in PHP etc?
Do people/companies who write in ruby/rails actively promote that their site/app is written in rails so it gets more publicity/hype?
Appreciate any feedback/POV's.
Not much. People don't look under the covers. The advantage is that you can build it faster and change it faster, which means you get to market faster.
Though some companies mention that the app runs on Rails or built in NYC, regular users, as a rule, do not care what the app they are using is built upon. But if you plan to eventually sell it or draw the investments, the trendy technology will certainly give you some bonus points.