PowerApps – Page 9 – Nishant Rana's Weblog

How to – configure Facebook Webhook Validation with Power Automate Flow (Dataverse / Dynamics 365)

Recently we were working on Facebook Leads integration with Dynamics 365. Webhook for Leads can be configured to send real-time notifications of the Leads ads changes.

The first step of setting up Webhook requires creating an HTTPS endpoint that can process 2 types of HTTP Requests – Verification and Event notifications.

Here we will see how to configure the Power Automate flow for verification.

https://developers.facebook.com/

Select Business for the app type.

After the App is created, select Webhooks to be added to the app. Click on Set up.

Next click Subscribe to this object. Here we have User selected.

For getting leads notification we need to select Page

Preview in new tab

And subscribe to leadgen object

It asks us to specify the Callback URL and Verify token.

Back in Power Automate create a Flow with Request type Trigger, followed by Parse JSON and Response actions.

For HTTP Request, select GET as the method, as FB will send a GET request to the endpoint URL, with the verification requests included in the endpoint of the URL.

Next, Parse the JSON and specify the Content and Schema

Content –

 triggerOutputs()['queries']

Schema –

Lastly in Response, set Status Code as 200 and Body as hub.challenge.

Here FB expects the Endpoint to verify the hub.verify_token (which we haven’t set up yet) and respond with hub.challenge value after verification.

Save the Flow, and copy the URL generated for the HTTP Request trigger.

Back in Meta for Developers, in edit user subscription paste the Callback URL and for now in place of token specify any value and click on Verify and Save.

We should now have a Webhook endpoint (Flow) successfully configured

We can also see our Flow ran successfully.

Here in the example we configured the webhook validation for User events, for Facebook Lead we need to configure it for Page, the other options available are Permissions, Application, Instagram etc.

Please check –

https://powerautomate.microsoft.com/nl-nl/blog/connect-facebook-workplace-to-sharepoint/

Hope it helps..

{
    "type": "object",
    "properties": {
        "hub.mode": {
            "type": "string"
        },
        "hub.challenge": {
            "type": "string"
        },
        "hub.verify_token": {
            "type": "string"
        }
    }
}

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How to – Filter data source to get the active records Dataverse / PowerApps

Just sharing the syntax, that we can use to filter the data source based on the status field.

Below is our gallery bound to Cases (Data Source) and showing only the Active cases.

Items

Filter(Cases, Status = ‘Status (Cases)’.Active)

Filter(Datasource, Status = ‘Status (Datasource)’.[value])

Hope it helps..

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How to – Filter using related table(lookup)’s Multi Choices or MultiSelect Option Set column– PowerApps / Dataverse / Dynamics 365

Continuing our previous example, here we have added a new choice field in Table B.

Here Table A has a lookup of Table B which has the new multichoice column added to it. (Also Table B has a lookup of Table C in it)

Based on the values selected in the multiple-choice field’s combo box we will filter the gallery.

The syntax to bind the multichoice column to the combo box.

Choices(Table[@choicecolumn])

First, for the Items property of the Main Gallery, we have added the new column ColorChoices to Table A using the AddColumns and the Lookup function.

Then filtered based on selected items of the combo color choices, using the new ColorChoices column added.

ChoiceColumn[@Value] in comboBox.SelectedItems

We have also used the newly added ColorChoices column to bind it to the gallery inside the main gallery as it would have multiple values.

The result –

Thanks to –

Hope it helps..

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How to – Filter Collection / Items in Gallery based on the related (Lookup) record’s value – Power Apps / Canvas Apps (Dataverse/Dynamics 365)

Suppose we have 3 tables, Table A, Table B, and Table C related to each other as

Table A (n-1) Table B (n-1) Table C i.e.

Table A has a lookup of Table B and Table B has a lookup of Table C.

Below is our sample canvas app that has a gallery and a combo box.

What we would want is based on the Table C record’s name selected in the combo box, we want to filter the collection to only show those records that are related to it.

One of the ways we could implement this is by using the AddColumns to add Table C data to Table A and apply the Filter to it.

Below is the formula to achieve the same.

In Table A, add a column name “TableCName”.

To get the Table C name, perform a Lookup on Table B, where Table B GUID is equal to Table A’s Table B lookup field, and then fetch the Table C Lookup’s name from Table B.

And lastly, perform a Filter on this new column TableCName, based on the selected value in the combo box.

See it working –

https://www.screencast.com/t/XZNDEsykAw

On selecting Table C1 in the combo box –

Similarly on selecting Table C2 in the combo box

Thanks to Debajit for guiding – https://debajmecrm.com/how-to-use-addcolumns-with-lookup-fields-of-sharepoint-in-power-apps/

To read more on AddColumns, Filter, and Lookup.

Hope it helps..

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Product Table has Village Lookup in it and Village table has Region lookup in this sample screenshot

Fixed – Value must be a data entity record error in Power Apps

We got the below error while trying to use the Relate function – “Value must be a data entity record”

As the error message clearly states and also if we see the syntax, the Relate function expects a record

Below was our formula for OnSelect, which was throwing the error

Here instead of passing the record, we were passing the table in the Relationship which was the reason for the error.

We changed it to store the ThisItem

And also updated the OnSelect

This fixed the issue for us.

Hope this helps..

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Fixed – Custom Page not opening or Page doesn’t exist in this app error in the model-driven app (PowerApps)

Recently we created a custom page to be opened from the Ribbon / Command bar, however, the page was not opening for us, even though the function was running properly.

https://learn.microsoft.com/en-us/power-apps/developer/model-driven-apps/clientapi/navigate-to-custom-page-examples

Here we had created the custom page from within the solution area, so we need to add this custom page to our model-driven app. (The other option is to create the page from the Modern App Designer.)

https://learn.microsoft.com/en-us/power-apps/maker/model-driven-apps/add-page-to-model-app#create-or-edit-a-custom-page

Open the app in the Modern App Designer and click on Add Page