cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
3tsolutions
Advocate II
Advocate II

Checks if all properties of an object exist and adds them if they are missing

Sometimes it happens that we receive an object, but not all the properties have been defined, and the flow fails and throws an error because the property does not exist.

 

Since we know what properties we are going to use in the flow, what we have to do is create an object with all properties null and then perform a union of the two objects.

 

First I created a flow, in this case the trigger is manual, then I initialize two string variables:

 

The first is the string of the json object with all properties set to null

In this example an object is defined with three properties: year, month, day

{"year":null,"month":null,"day":null}

3tsolutions_0-1671701060299.png

 

The second is the string of the json object that has arrived, in this case simulated that one of the three properties is missing

{"year":2022,"month":12}

3tsolutions_1-1671701311357.png

 

Then I parse the two json strings to get the two objects

3tsolutions_4-1671701500587.png

 

 

3tsolutions_2-1671701423757.png

3tsolutions_3-1671701447084.png

 

Finally I define using Compose the union of the two objects with all the properties

union(body('Parse_JSON_Property'),body('Parse_JSON_String'))

3tsolutions_5-1671701538171.png

 

The result as you can see is the object complete with all properties and with all values, and for missing properties it will be assigned null values

3tsolutions_6-1671701623702.png

 

 

 

If you have nested objects, the child properties will not be automatically merged

In this example I added the time property with an object with three other child properties

{"year":null,"month":null,"day":null,"time":{"hour":null,"minute":null,"second":null}}

and I simulate that the object that arrived has no main properties and no child properties

3tsolutions_8-1671702922064.png

 

After doing the parse of the two string variables (see above)

I perform the union of the child properties separately from the main ones

union(body('Parse_JSON_Property')['time'],body('Parse_JSON_String')['time'])

3tsolutions_12-1671703691697.png

 

3tsolutions_9-1671703171175.png

 

As you can see merging two objects fails to merge the child properties

3tsolutions_11-1671703579961.png

 

So we need to set the property with children

setProperty(outputs('Union_JSON_Property_'), 'time', outputs('Union_JSON_Child_Property'))

3tsolutions_13-1671703760210.png

3tsolutions_14-1671703810286.png

 

 

4 REPLIES 4
grantjenkins
Super User
Super User

@3tsolutions 

 

It's normal for properties to be missing from your JSON if they don't have values.

 

Can you specify in what circumstances you get errors?

 

Note the two ways to retrieve a property - the second one won't fail if the property doesn't exist.

 

//expects the property to exist and thows an error if it doesn't
item()['name']

//property may or may not exist - notice the ? used here for optional. If the name property doesn't exist it will just return null
item()?['name']

 

 


----------------------------------------------------------------------
If I've answered your question, please mark the post as Solved.
If you like my response, please consider giving it a Thumbs Up.

There are many cases where the absence of a property causes errors in the flow.
From logical to mathematical operations, from operations with dates to more.

 

Using the ? if the value of a property is not present it returns a null value,
but in many cases you need a default value that is not null.

 

For example if you perform a mathematical function

 

add(body('JSON')?['missing_property'],1)

 

3tsolutions_4-1671789021025.png

or in a date and time function

 

formatDateTime(body('JSON')?['missing_property'],'yyyy-MM-dd')

 

3tsolutions_5-1671789196842.png

or in a string function

 

substring(body('JSON')?['missing_property'],5,2)

 

Immagine 2022-12-23 110809.jpg

 

When you try to use the value of a property the create a condition

3tsolutions_6-1671789310034.png

 

When creating or updating an item in a Sharepoint list, if using formulas

Immagine 2022-12-23 110520.jpg

Using my system I can define the correct default values ​​of object properties so that no errors occur during the flow.

 

@3tsolutions I was probably more referring to this post where you are defaulting all of the values to null which would still encounter all the errors you listed above. And using ?['property_name'] would already return null anyway.

 

If you were talking about setting valid default values to get around these errors, then that would make sense.


----------------------------------------------------------------------
If I've answered your question, please mark the post as Solved.
If you like my response, please consider giving it a Thumbs Up.
AlexEncodian
Super User
Super User

@3tsolutions 

 

Thanks - I have the issues with an Azure DevOps query that is missing properties within objects when that property is empty and that causes a downstream Select action to fail.

 

Your solution makes sense to me when you have 1 object that you want to add missing properties to. 

 

If you have a JSON array with e.g. 100 objects, do you have to loop through each object and do the union operation? Is there are cleaner way of doing it?

Helpful resources

Announcements

Win free tickets to the Power Platform Conference | Summer of Solutions

We are excited to announce the Summer of Solutions Challenge!    This challenge is kicking off on Monday, June 17th and will run for (4) weeks.  The challenge is open to all Power Platform (Power Apps, Power Automate, Copilot Studio & Power Pages) community members. We invite you to participate in a quest to provide solutions to as many questions as you can. Answers can be provided in all the communities.    Entry Period: This Challenge will consist of four weekly Entry Periods as follows (each an “Entry Period”)   - 12:00 a.m. PT on June 17, 2024 – 11:59 p.m. PT on June 23, 2024 - 12:00 a.m. PT on June 24, 2024 – 11:59 p.m. PT on June 30, 2024 - 12:00 a.m. PT on July 1, 2024 – 11:59 p.m. PT on July 7, 2024 - 12:00 a.m. PT on July 8, 2024 – 11:59 p.m. PT on July 14, 2024   Entries will be eligible for the Entry Period in which they are received and will not carryover to subsequent weekly entry periods.  You must enter into each weekly Entry Period separately.   How to Enter: We invite you to participate in a quest to provide "Accepted Solutions" to as many questions as you can. Answers can be provided in all the communities. Users must provide a solution which can be an “Accepted Solution” in the Forums in all of the communities and there are no limits to the number of “Accepted Solutions” that a member can provide for entries in this challenge, but each entry must be substantially unique and different.    Winner Selection and Prizes: At the end of each week, we will list the top ten (10) Community users which will consist of: 5 Community Members & 5 Super Users and they will advance to the final drawing. We will post each week in the News & Announcements the top 10 Solution providers.  At the end of the challenge, we will add all of the top 10 weekly names and enter them into a random drawing.  Then we will randomly select ten (10) winners (5 Community Members & 5 Super Users) from among all eligible entrants received across all weekly Entry Periods to receive the prize listed below. If a winner declines, we will draw again at random for the next winner.  A user will only be able to win once overall. If they are drawn multiple times, another user will be drawn at random.  Individuals will be contacted before the announcement with the opportunity to claim or deny the prize.  Once all of the winners have been notified, we will post in the News & Announcements of each community with the list of winners.   Each winner will receive one (1) Pass to the Power Platform Conference in Las Vegas, Sep. 18-20, 2024 ($1800 value). NOTE: Prize is for conference attendance only and any other costs such as airfare, lodging, transportation, and food are the sole responsibility of the winner. Tickets are not transferable to any other party or to next year’s event.   ** PLEASE SEE THE ATTACHED RULES for this CHALLENGE**

Celebrating the June Super User of the Month: Markus Franz

Markus Franz is a phenomenal contributor to the Power Apps Community. Super Users like Markus inspire others through their example, encouragement, and active participation.    The Why: "I do this to help others achieve what they are trying to do. As a total beginner back then without IT background I know how overwhelming things can be, so I decided to jump in and help others. I also do this to keep progressing and learning myself." Thank you, Markus Franz, for your outstanding work! Keep inspiring others and making a difference in the community! 🎉  Keep up the fantastic work! 👏👏 Markus Franz | LinkedIn  Power Apps: mmbr1606  

Copilot Cookbook Challenge | Week 1 Results | Win Tickets to the Power Platform Conference

We are excited to announce the "The Copilot Cookbook Community Challenge is a great way to showcase your creativity and connect with others. Plus, you could win tickets to the Power Platform Community Conference in Las Vegas in September 2024 as an amazing bonus.   Two ways to enter: 1. Copilot Studio Cookbook Gallery:  https://aka.ms/CS_Copilot_Cookbook_Challenge 2. Power Apps Copilot Cookbook Gallery: https://aka.ms/PA_Copilot_Cookbook_Challenge   There will be 5 chances to qualify for the final drawing: Early Bird Entries: March 1 - June 2Week 1: June 3 - June 9Week 2: June 10 - June 16Week 3: June 17 - June 23Week 4: June 24 - June 30     At the end of each week, we will draw 5 random names from every user who has posted a qualifying Copilot Studio template, sample or demo in the Copilot Studio Cookbook or a qualifying Power Apps Copilot sample or demo in the Power Apps Copilot Cookbook. Users who are not drawn in a given week will be added to the pool for the next week. Users can qualify more than once, but no more than once per week. Four winners will be drawn at random from the total qualifying entrants. If a winner declines, we will draw again at random for the next winner.  A user will only be able to win once. If they are drawn multiple times, another user will be drawn at random. Prizes:  One Pass to the Power Platform Conference in Las Vegas, Sep. 18-20, 2024 ($1800 value, does not include travel, lodging, or any other expenses) Winners are also eligible to do a 10-minute presentation of their demo or solution in a community solutions showcase at the event. To qualify for the drawing, templates, samples or demos must be related to Copilot Studio or a Copilot feature of Power Apps, Power Automate, or Power Pages, and must demonstrate or solve a complete unique and useful business or technical problem. Power Automate and Power Pagers posts should be added to the Power Apps Cookbook. Final determination of qualifying entries is at the sole discretion of Microsoft. Weekly updates and the Final random winners will be posted in the News & Announcements section in the communities on July 29th, 2024. Did you submit entries early?  Early Bird Entries March 1 - June 2:  If you posted something in the "early bird" time frame complete this form: https://aka.ms/Copilot_Challenge_EarlyBirds if you would like to be entered in the challenge.   Week 1 Results:  Congratulations to the Week 1 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Copilot Cookbook Gallery:Power Apps Cookbook Gallery:1.  @Mathieu_Paris 1.   @SpongYe 2.  @Dhanush 2.   @Deenuji 3.  n/a3.   @Nived_Nambiar  4.  n/a4.   @ManishSolanki 5.  n/a5.    n/a

Your Moment to Shine: 2024 PPCC’s Got Power Awards Show

For the third year, we invite you, our talented community members, to participate in the grand 2024 Power Platform Community Conference's Got Power Awards. This event is your opportunity to showcase solutions that make a significant business impact, highlight extensive use of Power Platform products, demonstrate good governance, or tell an inspirational story. Share your success stories, inspire your peers, and show off some hidden talents.  This is your time to shine and bring your creations into the spotlight!  Make your mark, inspire others and leave a lasting impression. Sign up today for a chance to showcase your solution and win the coveted 2024 PPCC’s Got Power Award. This year we have three categories for you to participate in: Technical Solution Demo, Storytelling, and Hidden Talent.      The Technical solution demo category showcases your applications, automated workflows, copilot agentic experiences, web pages, AI capabilities, dashboards, and/or more. We want to see your most impactful Power Platform solutions!  The Storytelling category is where you can share your inspiring story, and the Hidden Talent category is where your talents (such as singing, dancing, jump roping, etc.) can shine! Submission Details:  Fill out the submission form https://aka.ms/PPCCGotPowerSignup by July 12th with details and a 2–5-minute video showcasing your Solution impact. (Please let us know you're coming to PPCC, too!)After review by a panel of Microsoft judges, the top storytellers will be invited to present a virtual demo presentation to the judges during early August. You’ll be notified soon after if you have been selected as a finalist to share your story live at PPCC’s Got Power!  The live show will feature the solution demos and storytelling talents of the top contestants, winner announcements, and the opportunity to network with your community.  It's not just a showcase for technical talent and storytelling showmanship, show it's a golden opportunity to make connections and celebrate our Community together! Let's make this a memorable event! See you there!   Mark your calendars! Date and Time: Thursday, Sept 19th Location: PPCC24 at the MGM Grand, Las Vegas, NV 

Tuesday Tip | Accepting Solutions

It's time for another TUESDAY TIPS, your weekly connection with the most insightful tips and tricks that empower both newcomers and veterans in the Power Platform Community! Every Tuesday, we bring you a curated selection of the finest advice, distilled from the resources and tools in the Community. Whether you’re a seasoned member or just getting started, Tuesday Tips are the perfect compass guiding you across the dynamic landscape of the Power Platform Community.   To enhance our collaborative environment, it's important to acknowledge when your question has been answered satisfactorily. Here's a quick guide on how to accept a solution to your questions: Find the Helpful Reply: Navigate to the reply that has effectively answered your question.Accept as Solution: Look for the "Accept as Solution" button or link, usually located at the bottom of the reply.Confirm Your Selection: Clicking this button may prompt you for confirmation. Go ahead and confirm that this is indeed the solution.Acknowledgment: Once accepted, the reply will be highlighted, and the original post will be marked as "Solved". This helps other community members find the same solution quickly. By marking a reply as an accepted solution, you not only thank the person who helped you but also make it easier for others with similar questions to find answers. Let's continue to support each other by recognizing helpful contributions. 

Reminder: To register for the Community Ambassador Call on June 13th

Calling all Super Users & User Group Leaders   Reminder: To register for the Community Ambassador Call on June 13th—for an exclusive event for User Group Leaders and Super Users! This month is packed with exciting updates and activities within our community.   What's Happening: Community Updates: We'll share the latest developments and what's new in our vibrant community.Special Guest Speaker: Get ready for an insightful talk and live demo of Microsoft Copilot Studio templates by our special guest.Regular Updates: Stay informed with our routine updates for User Groups and Super Users.Community Insights: We'll provide general information about ongoing and upcoming community initiatives. Don't Miss Out: Register Now: Choose the session that fits your schedule best.Check your private messages or Super User Forum for registration links. We're excited to connect with you and continue building a stronger community together.   See you at the call!  

Users online (3,015)