Can someone help me create an agri-processing traceability app using the XRPL? - iot

I am developing a proposal for the introduction of traceability along the supply chain for a local agri-product, I have been introduced to Substrate, however, I would like to use the XRPL for the creation and recording of key activity and KPIs along the Supply Chain. Can a developer here help?
I tried nothing before, I am hoping I can find a developer on the XRPL

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Rally SDK 2 - Given a story A and a story B, how can I say that B is a successor of A thanks to Javascript API?

I'm using the Rally SDK 2 to manipulate user stories from Javascript in a "Custom HTML" application.
I can query a story and retrieve its attributes.
I can update some of the attributes, like the Name of the Iteration for instance.
How can I add a successor to my story?
If I understand well, I should edit the "/HierarchicalRequirement/.../Successors" of my story, but I don't understand how to do that.
Would someone have an example, please?
Unfortunately, I don't have an exact example you can use, but the successors (or predecessors) are 'collections'. As such, you need to 'add' to the collection. There is an explanation of some of this here: https://docs.ca.com/ca-agile-central/saas/apps/2.1/doc/#!/guide/collections_in_v2
Built into the model for the artefact are routines to handle all the details. If you want more details, then you can download the sdk-debug.js file from the Rally server. To get to it, open up the developer tools in your browser and have a look where a custom app would get the sdk.js file from. The debug variant is formatted for humans to read and a very useful source of how to do things at the low levels. The definition of Rally.data.wsapi.ModelFactory has some good tips.
One of the recommendations I make to people starting out writing custom apps, is to use the developer tools in the browser to watch the network traffic that the Rally UI makes - and then work backwards to code.

Xcode 6 - iOS8: Allow Master User To Update Information

I was wondering if anyone could point me to any useful tutorials on allowing a master user to update information for their app. I am looking into creating an application for a local restaurant and I want the owner to be able to update information like the soup of the day and such by themselves.
I have been looking into JSON and CMS for this, but I am unable to find any useful information regarding iOS 8 or xCode 6. If anyone could provide me with this information, or any other suggestions on how to achieve this I would be very grateful!
(I am using Swift not Objective-C)
This is not a code issue, rather it is a development concept issue. You have many choices including making an API that is updated by the restaurant. The app then connects to the API and gets the recipes. If you feel you need to do this via the App make a special username that is allowed access to modify the menu. This can be accomplished via matching username exactly or via using a regex. It all really depends on the structure of your app platform.

Generate X-Apple-ActionSignature

for some research at work I have to understand how to generate the X-Apple-ActionSignature which can be found in HTTP-Headers e.g. of iTunes-traffic. I've read that it can be found in other Mac OS X and iOS specific network traffic, too.
What I've found so far is that iTunes sends a GET request to
https://init.itunes.apple.com/WebObjects/MZInit.woa/wa/signSapSetupCert
In the response a plist is appended which has a key 'sign-sap-setup-cert' containing probably a certificate. After that a POST request contains 'sign-sap-setup-buffer' and is sent to
https://play.itunes.apple.com/WebObjects/MZPlay.woa/wa/signSapSetup
The response has again 'sign-sap-setup-buffer' in the data segment and after that every other request contains a X-Apple-ActionSignature. However I can not find out how to generate this. Is someone able to help me?
Looking at this Twitter thread, it seems that "X-Apple-ActionSignature" is some kind of proprietary signature or metrics posts generated and/or used by FairPlay.
It's not something that Apple has documented publicly, nor do they make it easy to figure out how to generate or spoof (even if for non-malicious purposes like research).
Your best bet is to contact Apple directly (e.g. via a Technical Support Incident or TSI) and tell them exactly what you are doing and the big picture of why you are doing this, and if you are lucky the Developer Technical Support person will connect up with the right people in Apple Engineering to give you the answers you need.

How does one integrate oauth.io into appery.io?

I am developing a simple mobile app on appery.io for learning / experimental purposes at this point in time. I would love to be able to authenticate users by integrating oauth.io to assist with this.
The oauth.io documentation is written in such a manner that it looks like it should be very simple to do but I'm hitting a dead end and I'm concerned that I'm not doing things correctly or that what I'm setting out to do is impossible.
I am following the documentation provided at the references, below. I've installed the oauth.js file into the JavaScript folder under the project tab on appery's app builder. I confirmed that the HTML code is set (actually, appery.io does this automatically, but I double-checked), and then the next bit of code the documentation suggests triggers an error when I set it to run on "page show" in my app's start screen.
The line
OAuth.initialize('key-goes-here');
triggers an error in the console.log as follows:
Uncaught TypeError: Object #<Object> has no method 'initialize'
the following line that the documentation provides also raises the same error:
OAuth.redirect('stackoverflow', '/auth/callback');
I've scoured Google, appery.io and oauth.io for answers on how to proceed with this but cannot find anything (they seem to be somewhat new services). I don't think that this falls under appery's purview to assist me and haven't heard a reply from oauth.io. At this point, I do not even know if it is possible to do what I'm trying to do or whether it's just me doing something embarrassingly wrong.
If anyone is familiar with both of these services and could explain how to allow for o-authentication of users using oauth.io on appery.io in terms that someone at the lower-intermediate level could understand, that would be wonderful. Have I missed out any important information needed to assist with this?
References:
https://oauth.io/docs/api
How to get current user details logged through OAuth io
infoq. com/news/2013/08/oauth-io
oauth. io/auth/download/latest/oauth.js
Here is a great detailed tutorial how to use oauth.io and Appery.io - http://docs.appery.io/tutorials/connect-with-api-providers-using-oauth-io/
Feel free to contact Appery.io support team via forum - https://getsatisfaction.com/apperyio/

Vicidial direct call in my web app

I need to implement direct call feature via vicidial in my web application.
Let me explain the flow to better understand what I need to do. user would be able to login in vicidial via a webpage of my app. then can call on any number by entering number.
Is there any doc or wiki available to implement this feature. Guidance in simple steps would also be appreciating.
Thanks in advance :)
We implemented something like that using a product called WombatDialer that offers good APIs and is quite easy to set up (well, easier than ViciDial).
See http://www.wombatdialer.com/manuals/WD_UserManual-chunked/ar01s08.html for an API reference.

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