cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
UB400
Kudo Kingpin
Kudo Kingpin

Loops + Date

I'm building an "Event" App, and in this App, I need to show the Agenda for each day. I would like to be able to add "Buttons" in a row at the top of the page for each day (one "Button" for each day). The OnSelect value for the button will show the Agenda items for the day in a Vertical text Gallery using Filter.

 

At the time of creating the "Event", I want the "Event" Creator, to simply select the Start date and End date for the event, and I would like to create a Table  that will Have Columns such as "Day" (values  for the rows in this column would be "Day 1", "Day 2" etc. The next column would have the date value. So the the table would look like

 

Day          Date

Day1       27-02-2017

Day2       28-02-2017

 

Using this table I can then use Date calculations to determine if the Current Date = "Day" so that i can automatically select the correct "Agenda" Items to display in the gallery on the page.

 

So essentially, I can calculate (EndDate - StartDate)+1 to get number of days including the Start Date, I then need put them into a Collection / Table with Two columns as described above, I can then patch them into the DataSource.

 

Where I'm getting un-stuck is iterating through the number of days and capturing them into the Collection.

 

Any help would be greatly appreciated. 

 

 

 

1 ACCEPTED SOLUTION

Accepted Solutions
CarlosFigueira
Power Apps
Power Apps

PowerApps doesn't have the concept of loops at this point - but you can use a trick with the FirstN function to create such "loop". Here's an app that I'll use to show that:

ForumPost-001.png

The app has four main controls: a couple of date pickers (for the date range), a text box showing the number of days, and a gallery that shows all days within those days.

 

The textbox is what you said that you already have calculated:

TextBox1.Text: "Days: " & (DateDiff(DatePicker1.SelectedDate, DatePicker2.SelectedDate, Days) + 1)

Now, for the gallery, we need to create a table with as many items as the number calculated there. That's when the FirstN function comes into play - we take the first N items of a constant array of increasing values, and that gives us an "index" that can be used to create new columns. In the example below the maximum number of days that it can use is 30, but you can easily extend it to cover a wider range.

Gallery1.Items:
    AddColumns(
        FirstN(
            [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29],
            DateDiff(DatePicker1.SelectedDate, DatePicker2.SelectedDate, Days) + 1),
        "Day",
            "Day " & (Value + 1),
        "Date",
            DateAdd(DatePicker1.SelectedDate, Value, Days))

Now the gallery has a table with three columns: "Value" (which you can use or not), "Day" (the string value "Day <day number>") and "Date" (the actual date in your range).

 

Hope this helps. Also, feel free to create a new item in the PowerApps Ideas page if you think that we should add more "native" support for this scenario.

View solution in original post

3 REPLIES 3
CarlosFigueira
Power Apps
Power Apps

PowerApps doesn't have the concept of loops at this point - but you can use a trick with the FirstN function to create such "loop". Here's an app that I'll use to show that:

ForumPost-001.png

The app has four main controls: a couple of date pickers (for the date range), a text box showing the number of days, and a gallery that shows all days within those days.

 

The textbox is what you said that you already have calculated:

TextBox1.Text: "Days: " & (DateDiff(DatePicker1.SelectedDate, DatePicker2.SelectedDate, Days) + 1)

Now, for the gallery, we need to create a table with as many items as the number calculated there. That's when the FirstN function comes into play - we take the first N items of a constant array of increasing values, and that gives us an "index" that can be used to create new columns. In the example below the maximum number of days that it can use is 30, but you can easily extend it to cover a wider range.

Gallery1.Items:
    AddColumns(
        FirstN(
            [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29],
            DateDiff(DatePicker1.SelectedDate, DatePicker2.SelectedDate, Days) + 1),
        "Day",
            "Day " & (Value + 1),
        "Date",
            DateAdd(DatePicker1.SelectedDate, Value, Days))

Now the gallery has a table with three columns: "Value" (which you can use or not), "Day" (the string value "Day <day number>") and "Date" (the actual date in your range).

 

Hope this helps. Also, feel free to create a new item in the PowerApps Ideas page if you think that we should add more "native" support for this scenario.

@CarlosFigueira thank you so much. That works for me. It's these "tricks" that make the difference between an "average" App and a "great" App.Now I can have great navigation in my App, thanks to you.

 

I'll come back and make a Post in the Ideas section, for now this work around does the trick for me. 

start date and end date fix for 29 days - can we have the dynamic start date and end date selection and calculated the weekend (sat +sun) calculated as 1(one) weekend.

Helpful resources

Announcements

Celebrating the May Super User of the Month: Laurens Martens

  @LaurensM  is an exceptional contributor to the Power Platform Community. Super Users like Laurens inspire others through their example, encouragement, and active participation. We are excited to celebrated Laurens as our Super User of the Month for May 2024.   Consistent Engagement:  He consistently engages with the community by answering forum questions, sharing insights, and providing solutions. Laurens dedication helps other users find answers and overcome challenges.   Community Expertise: As a Super User, Laurens plays a crucial role in maintaining a knowledge sharing environment. Always ensuring a positive experience for everyone.   Leadership: He shares valuable insights on community growth, engagement, and future trends. Their contributions help shape the Power Platform Community.   Congratulations, Laurens Martens, for your outstanding work! Keep inspiring others and making a difference in the community!   Keep up the fantastic work!        

Check out the Copilot Studio Cookbook today!

We are excited to announce our new Copilot Cookbook Gallery in the Copilot Studio Community. We can't wait for you to share your expertise and your experience!    Join us for an amazing opportunity where you'll be one of the first to contribute to the Copilot Cookbook—your ultimate guide to mastering Microsoft Copilot. Whether you're seeking inspiration or grappling with a challenge while crafting apps, you probably already know that Copilot Cookbook is your reliable assistant, offering a wealth of tips and tricks at your fingertips--and we want you to add your expertise. What can you "cook" up?   Click this link to get started: https://aka.ms/CS_Copilot_Cookbook_Gallery   Don't miss out on this exclusive opportunity to be one of the first in the Community to share your app creation journey with Copilot. We'll be announcing a Cookbook Challenge very soon and want to make sure you one of the first "cooks" in the kitchen.   Don't miss your moment--start submitting in the Copilot Cookbook Gallery today!     Thank you,  Engagement Team

Announcing Power Apps Copilot Cookbook Gallery

We are excited to share that the all-new Copilot Cookbook Gallery for Power Apps is now available in the Power Apps Community, full of tips and tricks on how to best use Microsoft Copilot as you develop and create in Power Apps. The new Copilot Cookbook is your go-to resource when you need inspiration--or when you're stuck--and aren't sure how to best partner with Copilot while creating apps.   Whether you're looking for the best prompts or just want to know about responsible AI use, visit Copilot Cookbook for regular updates you can rely on--while also serving up some of your greatest tips and tricks for the Community. Check Out the new Copilot Cookbook for Power Apps today: Copilot Cookbook - Power Platform Community.  We can't wait to see what you "cook" up!      

Tuesday Tip | How to Report Spam in Our Community

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.   As our community family expands each week, we revisit our essential tools, tips, and tricks to ensure you’re well-versed in the community’s pulse. Keep an eye on the News & Announcements for your weekly Tuesday Tips—you never know what you may learn!   Today's Tip: How to Report Spam in Our Community We strive to maintain a professional and helpful community, and part of that effort involves keeping our platform free of spam. If you encounter a post that you believe is spam, please follow these steps to report it: Locate the Post: Find the post in question within the community.Kebab Menu: Click on the "Kebab" menu | 3 Dots, on the top right of the post.Report Inappropriate Content: Select "Report Inappropriate Content" from the menu.Submit Report: Fill out any necessary details on the form and submit your report.   Our community team will review the report and take appropriate action to ensure our community remains a valuable resource for everyone.   Thank you for helping us keep the community clean and useful!

Community Roundup: A Look Back at Our Last 10 Tuesday Tips

As we continue to grow and learn together, it's important to reflect on the valuable insights we've shared. For today's #TuesdayTip, we're excited to take a moment to look back at the last 10 tips we've shared in case you missed any or want to revisit them. Thanks for your incredible support for this series--we're so glad it was able to help so many of you navigate your community experience!   Getting Started in the Community An overview of everything you need to know about navigating the community on one page!  Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Community Ranks and YOU Have you ever wondered how your fellow community members ascend the ranks within our community? We explain everything about ranks and how to achieve points so you can climb up in the rankings! Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Powering Up Your Community Profile Your Community User Profile is how the Community knows you--so it's essential that it works the way you need it to! From changing your username to updating contact information, this Knowledge Base Article is your best resource for powering up your profile. Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Community Blogs--A Great Place to Start There's so much you'll discover in the Community Blogs, and we hope you'll check them out today!  Community Links: ○ Power Apps ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Unlocking Community Achievements and Earning Badges Across the Communities, you'll see badges on users profile that recognize and reward their engagement and contributions. Check out some details on Community badges--and find out more in the detailed link at the end of the article! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio    Blogging in the Community Interested in blogging? Everything you need to know on writing blogs in our four communities! Get started blogging across the Power Platform communities today! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Subscriptions & Notifications We don't want you to miss a thing in the community! Read all about how to subscribe to sections of our forums and how to setup your notifications! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Getting Started with Private Messages & Macros Do you want to enhance your communication in the Community and streamline your interactions? One of the best ways to do this is to ensure you are using Private Messaging--and the ever-handy macros that are available to you as a Community member! Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Community User Groups Learn everything about being part of, starting, or leading a User Group in the Power Platform Community. Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Update Your Community Profile Today! Keep your community profile up to date which is essential for staying connected and engaged with the community. Community Links: ○ Power Apps  ○ Power Automate  ○ Power Pages  ○ Copilot Studio   Thank you for being an integral part of our journey.   Here's to many more Tuesday Tips as we pave the way for a brighter, more connected future! As always, watch the News & Announcements for the next set of tips, coming soon!

Hear what's next for the Power Up Program

Hear from Principal Program Manager, Dimpi Gandhi, to discover the latest enhancements to the Microsoft #PowerUpProgram, including a new accelerated video-based curriculum crafted with the expertise of Microsoft MVPs, Rory Neary and Charlie Phipps-Bennett. If you’d like to hear what’s coming next, click the link below to sign up today! https://aka.ms/PowerUp  

Top Solution Authors
Top Kudoed Authors
Users online (2,259)