Question
· Nov 19, 2018
JSON Syntax

Hi,

I'm using InterSystem Cache v2015.2.5 and I'm implementing a REST API and returning JSON.

Following the documentation I see examples like this

Set obj = {"destinations": ["London","Madrid","Tokyo"]}
Write obj.%ToJSON()

However, I have a compilation error

ERROR #1054: Invalid expression : '{"destinations":'

Is there something that needs to be enabled on Studio to allow this syntax?

Thank you,

Rui

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I am trying to use the automated unittest class for a %CSP.Rest service.

So my Unittest code set's %request and %response from %CSP.Req/resp respectively

I build a tProxy with the fields I need for the post and set it %ToJson... I have tried seting %request.Content = tProxy (and not)

I call the method for the post url directly...

When that method calls %fromJson to set an object with the info. I passed...

- when I don't set %request.content.. I get a error '5035 - premature end of data code 12'

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or "Bonus Breakage"

In our last lesson, we added a relationship between 2 persistent classes. We are clearly going to need to start creating REST Services to expose CRUD operations for each of these classes, but before we do that, we should really finish defining our linkages. We added code to our Widget toJSON to spool off related Accessory data, so we should really do the reciprocal and allow Accessories to return all Widgets that are compatible.

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404 Not Found

{
"error": {
 "errors": [
  {
   "domain": "global",
   "reason": "notFound",
   "message": "Not Found"
  }
 ],
 "code": 404,
 "message": "Not Found"
 }
}

I want to do something like the above sample from a Google Storage JSON API. I have a call to Write obj.%ToJSON() followed by return ..ReportHttpStatusCode(..#HTTP404NOTFOUND) however the HTTP Status code is always 200. If I remove the Write obj.%ToJSON() statement it returns a 404 status with no body. How do I return both?

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Question
· Sep 14, 2018
REST POST 405 error

I'm testing out the new %CSP.REST way of creating an api and having a problem with a POST getting a 405 error.

I get data returned when I do a GET, so I don't think it's a configuration issue or a class issue.

I have no problem with %CSP.Page when creating a REST type method. So what am I missing?

Can someone give me some advice?

Thank you.

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I already talked about GraphQL and the ways of using it in this article. Now I am going to tell you about the tasks I was facing and the results that I managed to achieve in the process of implementing GraphQL for InterSystems platforms.

What this article is about

  • Generation of an AST for a GraphQL request and its validation
  • Generation of documentation
  • Generation of a response in the JSON format
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Hi, Community!

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2 1
1 573

Hi,

I'm getting mad trying to get data from an external REST service that uses Basic Authentication from Ensemble. The BO worked fine when I was using a test server without authentification, but as soon as we need to go to production I cannot have it working.

So far, I've created the username/password at the credentials page (Ensemble-Configure-Credentials). I've setup the BO to use this credentials. But nothing happens.

I've tried with the Rest Client (addon for Mozilla), and using the same address, port and user/pwd works just fine.

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The REST webservice works perfectly when run on SOAP UI. This end point server is an https site that uses basic authentication (uname and pwd). But when I run the request through an Enslib.Rest.Operation using a configured SSL and stored credentials, I get an "unauthorized" error, unless I explicitly hard code the password in the operation class. HS Version is 2014.1 .

I have 2 questions. Pardon me, they are both related!!

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I have a CSP REST web application where I'm using delegated authentication via basic authentication in the REST calls. When I do a call to the web app with correct user credentials, I get a CSPSESSIONID cookie back representing the CSP session, which has started for the user I'm logged in with.

And when I want to log out/end the CSP session with the "CacheLogout=end" query parameter, I get a 401 Unauthorized code back. But the csp session itself does get terminated, which means the logout call was successful.

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or "Didn't you say you would cover Persistent Objects in Part 5, Chris?"

Yes, that was the plan. This is a pretty important topic, so it get's its own Article

Up until now, we've display widget JSON that has been created by a basic loop. Clearly this isn't of much value. Now we have our stack connected together, and we can see that the data is flowing to the Welcome page, it's time to complete the stack and start feeding our service from "real" data.

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Hi Community!

New video "Treating Patients with REST and iKnow" is available now on DC YouTube Channel:

https://www.youtube.com/embed/HDTij5GS_qQ
[This is an embedded link, but you cannot view embedded content directly on the site because you have declined the cookies necessary to access it. To view embedded content, you would need to accept all cookies in your Cookies Settings]

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Hello,

I want to convert a json, which passed on in the a REST call, into a request message.

I use method %ConvertJSONToObject of the %ZEN.Auxiliary.altJSONProvider class.

Set sc = ##class(%ZEN.Auxiliary.altJSONProvider).%ConvertJSONToObject(%request.Content, "TestRequest", .request)

Is there an alternative for this? I want to avoid to use the %ZEN library.

Best Regards

Roger de Coninck

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In this article I would like to present the RESTForms project - generic REST API backend for modern web applications.

The idea behind the project is simple -after I wrote several REST APIs I realized that generally, REST API consists of two parts:

  • Work with persistent classes
  • Custom business logic

And, while you'll have to write your own custom business logic, RESTForms provides all things related to working with persistent classes right out of the box.
Use cases

  • You already have a data model in Caché and you want to expose some (or all) of the information in a form of REST API
  • You are developing a new Caché application and you want to provide a REST API
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Hello,

In all web services, i need to my get login and token. So with Postman, i tried to call a HTTP request where I put the login/token in the header :

I tried to get data from Http request header. The REST APi use %CSP.REST. I tried something like that :

But it didn't work..

Someone can give me some example or other method ?

Regards,

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I need to redirect user to a url, which is 5000+ characters long.
To do that I set:

set %response.Redirect = url

However, in the browser I receive this header:

LOCATION: <First 3972 characters of the 'url' variable>

In WriteHTTPHeader method of %CSP.Response, where the LOCATION header is
written:

Write "Location: ", <Redirect>,!

After I added a buffer flush, after the above-mentioned line:

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