How can I call the Power BI API from my application and understand Microsoft APIs?
I have successfully authorized users via the Azure AD library for JavaScript. However I have not been able to get a successful response from the API in the console. I get an unauthorized error, no access control allow origin header is present on the requested resource.
I am used to making API calls using Javascript and Angular, but not with Microsoft APIs and how they must be authorized. I have tried to read articles but they go over my head.
The errors are as follows
Failed to load resource: the server responded with a status of 404 (Not Found)
XMLHttpRequest: cannot load https://api.powerbi.com/v1.0/myorg/dashboards. Response to preflight request doesn't pass access control check: No Access-Control-Allow-Origin header is present on the requested resource. Origin http://renniesb.github.io is therefore not allowed access. The response had HTTP status code 404.
nope
Repository with my project code
https://github.com/Renniesb/sample_dashboard/tree/gh-pages
Place in repository that shows my Power B.I API call https://github.com/Renniesb/sample_dashboard/blob/gh-pages/app/services/powerbi.service.js
Expected behavior
List dashboards in the console.
Test site
https://Renniesb.github.io/sample_dashboard. To test I authorize with my credentials. How would I let users of this forum test the behavior. How do I enable their credentials?
List of things I've tried already
Created a reverse proxy using the following website: http://shawnsimondeveloper.com/nodeproxyangular/
Used the JSONP hack to attempt to get around CORS problem.
Put in the origin of the call in the webconfig file.
Tested the site both locally and on a webpage on GitHub
You shouldn't need to use both CORS and the HTTP proxy. Since you are using the ADAL JS library it will automatically append your Power BI token to your outgoing HTTP requests.
You will also need to setup the following:
Enable implicit grant flow as described in Step 3
Also, the dashboards endpoint is still only available in the "beta" version. This was causing the 404's.
Update your URLs to https://api.powerbi.com/beta/myorg/dashboards
To continue to use standard AJAX call with CORS:
Update your Angular powerbiService service to make HTTP requests directly to the https://api.powerbi.com domain rather than relative urls.
Related
I have shopify admin api and I want to call it in the front end but when i try to fetch the data it gives me the following error "Access to XMLHttpRequest at 'https://API_KEY:PASSORD#NAME.myshopify.com/admin/api/2021-07/orders.json' from origin 'null' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.", I use axios and fetch and both did not work.
any help well be appreciated.
Great question! It's one that I have encountered as well. Shopify purposely blocks CORS requests. In order to make requests to your backend you will need to setup a Shopify APP Proxy for your front-end to communicate with.
Essentially what this does, is it permits your front-end to make requests to app/api/v1/orders_endpoint which Shopify will then route to https://yourapp.com/api/v1/orders_endpoints.
Check out the Shopify documentation for more information. The code to verify the signature is in Ruby, but some quick google foo turns up results in Javascript as well, see this stack overlow post.
Is it possible to call an AAD authenticated Azure function from javascript without an auth library like ADAL and also without registering the client application with Microsoft?
Getting this error: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '
Both the simple web client app and azure function are registered under the same AAD. Both have the azurewebsites.net domain.
What's the lightest web client we can have?
The error you are getting is coming from a cross-origin resource sharing (CORS) check. I suspect this occurs when calling the function from the web app. The idea is that the browser is making an OPTIONS request first to see if the caller (the web app) is allowed to make a call a resource on a different domain (the function app). If that's approved, then it will make the actual call to the function.
So, we just have to make it so that the function app responds letting the browser know the call is allowed. Fortunately, Functions has a built-in CORS feature. In the portal, select Platform features for your function app. Under the API section, you'll see a CORS option. Add the domain for your function app and click Save. You should see the Access-Control-Allow-Origin error go away.
As for AAD, any OpenID Connect client library would work - ADAL is a fine choice for this, though. You may still need to create a client registration, though.
In Azure AD ,with the normal OpenID Connect/OAuth flow, you would acquire token by making a request to the /token endpoint. However, the azure ad endpoint does not support CORS requests, so making AJAX calls to get access tokens is out of the question. Instead, you can use the implicit flow in a hidden iframe to get new tokens for web APIs . See document here and here for more details .
And yes,i would suggest you use ADAL.JS which helps you to use Azure AD for handling authentication easier .
I'm trying to perform an ajax request to a third party api from my web site using javascript (On the client side) and I receive a No 'Access-Control-Allow-Origin' error. When trying to access this from node.js project everything is working fine.
More over, when opening Chrome with --disable-web-security everything is working fine as well.
Any information about this issue will be appreciated :-)
You cannot access a third-party API without using CORS. CORS adds special headers (e.g. Access-Control-Allow-Origin) to the HTTP response. This makes sure, that the API can control which front-end can make a request to it. This means, however, your API needs to recognize your front-end URL and accept requests from it.
You can (a) use CORS on the API side (changes are necessary on the API) or (b) use your server-side language to make the API request (e.g. PHP makes the request to the API and the front-end receives the response from the PHP back-end). Everything else is prohibited by the browser's security settings.
You can read more about CORS e.g. here.
I'm currently developing a javascript app and I'm trying to access the Dynamics CRM Web API to fetch some information from the CRM.
My app hosted inside an Azure App Service (and testing in localhost), and it's accessible only authenticated users (by microsoft), so when users try to load the app, the azurewebsites redirect them to the microsoft's common OAUTH login page (https://login.microsoftonline.com/common/oauth2/authorize?...).
After a successful login, users redirect back to my javascript app, and then when the document is ready, I would like to call the dynamics CRM web api to fetch some entity (via jQuery's ajax request), but I get the following error message in the JS console:
XMLHttpRequest cannot load https://MYTENANTID.crm4.dynamics.com/api/data/v8.1/contacts. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://MYAPP.local' is therefore not allowed access. The response had HTTP status code 401.
I know this is bacause of the same origin policy, the question is: is it possible access the API from client side at all, or I need to do it in a server side?
According to your error message, it seems to be a common CORS issue when we calling a request from the client side application to our backend server.
Usually, we will add response headers in backend server to support the CORS. And you can refer to https://www.asp.net/web-api/overview/security/enabling-cross-origin-requests-in-web-api for more info about how to enable Cross-Origin Requests in ASP.NET Web API.
And CRM 2016 has support CORS setting, please refer to https://msdn.microsoft.com/en-us/library/gg309589%28v=crm.8%29.aspx?f=255&MSPPError=-2147217396#bkmk_corsSupport for more info.
I'm doing a test locally and whenever I hit the button from the example I found on Custom Integration I'm getting this error:
XMLHttpRequest cannot load https://link-tartan.plaid.com/client/info. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://cdn.plaid.com' is therefore not allowed access. The response had HTTP status code 403.
I've read that the server needs to add a header to the response with
Access-Control-Allow-Origin: *
However the problem is the server isn't owned by me and I'm just requesting response from an API from Plaid.
What are the options that I have that I can do and fix on my end?
I got a response from Plaid support. And it turned out they only support certain IP addresses. So I ask them to allow my IP address to transact to their API. Other solution would be to use a VPN, hope this helps.