Hi all,
I'm trying to build a custom connector around Twilio's fax API, but I'm having trouble creating a custom action around a POST request with an application/x-www-form-urlencoded content type. The POST request is described in Twilio's documentation here.
I can get the request to work with curl and in Postman, but with the custom connector, I keep getting a "missing required parameter" error, which makes me think that the request body is still being sent as json rather than the "key=val&key=val" format that the endpoint expects. I tried to set the Content-Type header manually, but no luck. Here is the relevant part of my openapi file. I've tried a few variants of this. Do I have something wrong, or is Flow just unable to handle custom actions with this content type?
"post": { "responses": { "default": { "description": "default", "schema": { "type": "string" } } }, "consumes": [ "application/x-www-form-urlencoded" ], "produces":[ "application/json" ], "summary": "Send a fax", "description": "Sends a fax", "operationId": "SEND_FAX", "parameters": [ { "name": "Content-Type", "in": "header", "description": "Content-Type", "required": true, "type": "string", "default":"application/x-www-form-urlencoded" }, { "in": "formData", "type": "string", "description": "From", "name": "From" }, { "in": "formData", "type": "string", "description": "To", "name": "To" }, { "in": "formData", "type": "string", "description": "MediaUrl", "name": "MediaUrl" } ] }
Came across this post because I'm having the EXACT same problem. I'm trying to post to Twilio's fax API and have tried passing the parameters by URL encoding and as JSON, setting the content-type manually and not specifying it at all. Every single time the Flow fails because the required 'To' parameter is missing. Works fine in Postman but can't get it working in Flow.
Hoping you solved this. Thanks!
Same problem here, but with a private app. x-www-form-urlencoded - formDate param seems to be completely ignored by Microsoft Flow 😞
Could solve that by changing the formData parameters to query paramenters.
@thalesvalias I'm having the same problem. Your suggested solution only works for simple parameters
{ "title":"Test folder" }
But if you have nested parameters, or an array, it throws a different error:
{ "project": { "ownerIds":["KUAE6EG7"], "status":"Red", "startDate":"2019-09-31", "endDate":"2019-10-07" } }
This is the error I get:
Your custom connector has been successfully updated, but there was an issue converting it to WADL for PowerApps: An error occured while converting OpenAPI file to WADL file. Error: 'Parameter with type='array' is not currently supported at JSON path paths./api/v4/folders/{folderId}/folders.post.parameters[3]'
I'm still searching for a solution (In this thread: Custom Connector - error: array not supported in parameter )
Hey, at the end I haven't stick to my previous solution... I just let the params as they originally are, as formData, and it worked normally. The thing is that I was trying to use the Test mechanism from inside the connector, and the test for formData params seems messed up. So I just ignored the tests and used the custom connector on my flow and there it simply worked.
But in your case you're using PowerApps, I used MSFlow... so it might be different for you :(. Sorry, I wish I could helped you more.
@Anonymous wrote:@thalesvalias I'm having the same problem. Your suggested solution only works for simple parameters
{ "title":"Test folder" }But if you have nested parameters, or an array, it throws a different error:
{ "project": { "ownerIds":["KUAE6EG7"], "status":"Red", "startDate":"2019-09-31", "endDate":"2019-10-07" } }This is the error I get:
Your custom connector has been successfully updated, but there was an issue converting it to WADL for PowerApps: An error occured while converting OpenAPI file to WADL file. Error: 'Parameter with type='array' is not currently supported at JSON path paths./api/v4/folders/{folderId}/folders.post.parameters[3]'
I'm still searching for a solution (In this thread: Custom Connector - error: array not supported in parameter )
Thanks for sharing your workaround.
Maybe I posted in the wrong forum, I actually am using Flow as well, because of the error message stopping me in the Custom Connector setup, I posted in the powerapps forum.
I'm glad that it worked for you using formData, unfortunately the api I'm connecting to (Wrike) doesn't support that Content Type.
Since writing my post I tested in Postman and was successful in sending the request by adding the header Content-Type application/x-www-form-urlencoded - so I went back to the custom connector and added my parameters to the body, when I peek code everything shows up as I believe it should.
And now I am in flow and stuck at the same place as the OP.
Other api, same problem:
In Postman: works fine
In connector test function: works fine too:
Swagger-Editor:
paths: /auth/token: post: consumes: [application/x-www-form-urlencoded] produces: [application/json] parameters: - {name: client_id, in: query, required: true, type: string, default: myclient, x-ms-visibility: internal} - {name: client_secret, in: query, required: true, type: string, default: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx, x-ms-visibility: internal} - {name: grant_type, in: query, required: true, type: string, default: client_credentials, x-ms-visibility: internal} - {name: Content-Type, in: header, required: true, type: string, default: application/x-www-form-urlencoded, x-ms-visibility: internal}
But using it in PowerApp or Flow, I get status=415 error (wrong Content-Type)
It seems, the the microsoft server is changeing the header:
{ "method":"post", "queries":{ "client_id":"myclient", "client_secret":"xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", "grant_type":"client_credentials" }, "headers":{ "Content-Type":"application/x-www-form-urlencoded" }, "path":"/auth/token", "host":{ "api":{ "runtimeUrl":"https://europe-002.azure-apim.net/apim/connector-999999999999999999999999999999999999" }, "connection":{ "name":"/providers/Microsoft.PowerApps/apis/shared_connector-999999999999999999999999999999999999/connections/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" } }, "authentication":{ "scheme":"Key", "parameter":"*sanitized*", "type":"Raw" } }
back to
"Content-Type":"application/json"
I was able to get mine working, I ended up putting the whole thing in the URL query.
For my problematic object I added it into the URL sample in PowerApps Custom Connector as:
&project=string
Then in Flow, I created a compose action and wrapped it in the following Expression:
string('{ "ownerIds":["KUAE6EG7"],"startDate":"2020-08-06"}')
It is working for now, so whatever re-formatting Flow is doing, forcing it into a string before-hand seems to do the trick for me.
Hi Gonzalo,
yes: for your problem this workaround helps changing the url
Unfortunately not for me, because
"content-type": "application/x-www-form-urlencoded"
I got my API to finally work. Here is what I did:
1. Exported my postman collection
2. Converted the export JSON file into Swagger format
3. Then, in PowerApps Custom Connector, I opened my non-working connector in Edit mode
4. On Test tab, I opened the API in Swagger editor and pasted the Swagger code generated in step 2
5. I tried the API there itself and it returned a valid output
6. The problem here though is that the API only returns True or False values
7. So I had to edit the Swagger code a little bit so as to get a JSON response from the API. Used the link https://swagger.io/docs/specification/2-0/describing-responses/ for updating the Swagger
Hope this helps you.
@Frank37 ,
Have you tried adding the header as a "New Policy"? It might be worth a try.
@Anonymous Great Idea: it works 👍
This helped me.
Please remember to encode using base64 method
Logic Apps works with and supports other content types, but might require that you manually get the message body by decoding the $content variable.
https://docs.microsoft.com/en-us/azure/logic-apps/logic-apps-content-type#other-content-types
How can I add a new policy
While editing your custom connector:
1. Under the Definition tab scroll all the way down
2. The last section is called Policies
3. click +New policy
@Anonymous this helped me but I can't get a successful response when running custom connector in Power App because the request body is always
"body": ""
instead of
"body": {}
or
"body": {
"pagination": {
"pageNumber": 1,
"pageSize": 999
}
}
How can I pass in a proper request body from Power Apps to custom connector?
Have talked about this problem extensively here, here, and here.
A new month means it's time to celebrate and welcome the new user groups that have joined our community. We are excited to announce that we have more than 8 New Groups, which is no surprise after the amazing Microsoft Power Platform Conference. This month, we are breaking them out by the different community categories. If your group is listed here, give this post a kudo so we can celebrate with you! Don't forget to take a look at the many events happening near you or virtually! It's a great time of year to connect and engage with User Groups both locally and online. Please Welcome Our NEW User Groups Power Platform: PowerIT User Group: Nottingham Power Platform User Group: Bergen Power Platform User Group: Danmark Nashville Power Platform User Group Microsoft Ambassador Program y Mujer Latina Technolochicas NCWIT Community Copilot Studio: Copilot User Group Italia Dynamics365: Dynamics User Group AdriaticDynamic 365 Azerbaijan December User Group Events 01 Dec 2023 Aprendiendo Desarrollo web, creando mi primer power app y power page. 01 Dec 2023 Q4 Hybrid Philadelphia Dynamics 365 & Power Platform User Group Meeting05 Dec 2023APAC Dynamics 365 FastTrack Bootcamp - BI and Analytics07 Dec 2023Bay Area Power Platform Meetup: Learn, Share, and Connect07 Dec 2023Indiana D365/AX December User Group Meeting07 Dec 2023Dynamics User Group Meeting: Houston09 Dec 2023 December '23 - NEW Power Apps User Group Meeting - Online 12 Dec 2023December Cleveland Power Platform User Group Meeting12 Dec 2023 RW2 Data Stewardship Open Forum Discussion 13 Dec 2023 Black Country Power Platform User Group - December 2023 - West Midlands
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Welcome to our November Newsletter, where we highlight the latest news, product releases, upcoming events, and the amazing work of our outstanding Community members. If you're new to the Community, please make sure to follow the latest News & Announcements and check out the Community on LinkedIn as well! It's the best way to stay up-to-date with all the news from across the Power Platform and beyond. This month's highlights:- - Our most active community members- Microsoft Power Up Program- Microsoft Community Days website - The latest blogs and more COMMUNITY HIGHLIGHTS Check out the most active community members of the last month. These hardworking members are posting regularly, answering questions, kudos, and providing top solutions in their communities. We are so thankful for each of you--keep up the great work! If you hope to see your name here next month, just get active! FLMikePstork1Nived_NambiarWarrenBelzSprongYeManishSolankiLaurensMwskinnermlcAgniusExpiscornovuscreativeopinion KatieAUinzil2kHaressh2728hafizsultan242douicmccaughanwoLucas001domliu Power Up Program Click the image below to discover more about the amazing Microsoft Power Up Program, as Reem Omar, Abbas Godhrawala, Chahine Atallah, Ruby Ruiz Brown, Juan Francisco Sánchez Enciso, Joscelyne Andrade Arévalo, Eric G. and Paulina Pałczyńska share how non-tech professionals can successfully advance into a new career path using Microsoft #PowerPlatform. To find out more about this amazing initiative, click here to apply for the program and reboot your journey into low-code app development today! Community Days - Event Website Have you checked out the Community Days website yet? Dedicated to the volunteer community organizers around the world, Community Days is the perfect place to find an event near you or add an event for wider exposure. Many thanks to Thomas Daly, Sharon Weaver, Sedat Tum, Jonathan Weaver, Manpreet Singh, David Leveille, Jason Rivera, Mike Maadarani, Rob Windsor and the team for all their hard work. Anyone can host a Community Day on any topic relevant to our industry, just click the image below to find out more. EVENT NEWS Power Platform French Summit - Paris/Virtual - 6-7th Dec It's not long now until the Power Platform French Summit, which takes place both virtually and in-person at the Microsoft France conference center in Paris on 6-7th December 2023. If you can't make it in-person, all sessions will also be broadcast on virtual networks for better distribution and accessibility. There's a fantastic array of speakers, including Jérémy LAPLAINE, Amira Beldjilali, Rémi Chambard, Erika Beaumier, Makenson Frena, Assia Boutera, Elliott Pierret, Clothilde Facon, Gilles Pommier, Marie Aubert, Antoine Herbosa, Chloé Moreau, Raphaël Senis, Rym Ben Hamida, Loïc Cimon, Joséphine Salafia, David Zoonekyndt, Aïcha Charpentier, Henry Jammes, Milene Rochard, Mehdi EL YASSIR, and many more. Click the image below for more information. LATEST COMMUNITY BLOG ARTICLES Power Apps Community Blog Power Automate Community Blog Copilot Community Blog Power Pages Community Blog
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