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Billy_C
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Model Driven Apps hiding/showing fields based on Multiple choice column

Hi there,


I have been trying to hide or show multiple columns based on a multiple choices column. I first tried to use the business rules to check if it contains a certain value, but since multiple-choice fields aren't displayed in business rules I can't show or hide my fields.

So I was thinking to use separate calculated yes/no fields to check if that field contained that specific value or not.

Again in calculated fields you can't choose a multiple choice field for conditions.

To give you an example I have a section called related info where I want to connect my reminder with multiple types of tables (entities). So I have a column (field) called Applicable to which is an option set that contains different options as Company, Contact Person, Project, Quote, Order, Delivery, Application, Invoice, Payment.

A user can select multiple fields based on what they want to connect that record with that way only the necessary fields are visible so not to many fields are visible at the time and the form stays nice and clean.


So I wonder is there a method to be able to hide/show lookup columns based on a multiple choice field?


Thanks in advance,


Billy Cottrell

1 ACCEPTED SOLUTION

Accepted Solutions
Mira_Ghaly
Multi Super User
Multi Super User

@Billy_C 

To be able to deal with multiselect option set you need to use JavaScript please find below sample Javascript:

 

function showHideFiels(executionContext) {
    var formContext = executionContext.getFormContext();
    var type = Xrm.Page.getAttribute("fieldschemaname").getValue();
  if (type != null) {
  if (type.indexOf(1) != -1)//
        {
//showfield
            formContext.getControl("fieldSchemaname").setVisible(true);

}
else
{
//Hide field
            formContext.getControl("fieldSchemaname").setVisible(true);

}
}
}

 To set the JavaScript to work on the field change: Please follow the below steps:

1. Open the form and click on Events -> Add Library

Mira_Ghaly_0-1618577887305.png

2. Create New and add a new JavaScript file and paste the function in it

3. Click on event handler select the JavaScript file and Tick Pass execution context as first object

Mira_Ghaly_1-1618578035319.png

 

If this post helps you with your problem, please mark your as Accepted solution.If you like my response, please give it a Thumbs Up.

Blog: here

View solution in original post

13 REPLIES 13
Mira_Ghaly
Multi Super User
Multi Super User

@Billy_C 

To be able to deal with multiselect option set you need to use JavaScript please find below sample Javascript:

 

function showHideFiels(executionContext) {
    var formContext = executionContext.getFormContext();
    var type = Xrm.Page.getAttribute("fieldschemaname").getValue();
  if (type != null) {
  if (type.indexOf(1) != -1)//
        {
//showfield
            formContext.getControl("fieldSchemaname").setVisible(true);

}
else
{
//Hide field
            formContext.getControl("fieldSchemaname").setVisible(true);

}
}
}

 To set the JavaScript to work on the field change: Please follow the below steps:

1. Open the form and click on Events -> Add Library

Mira_Ghaly_0-1618577887305.png

2. Create New and add a new JavaScript file and paste the function in it

3. Click on event handler select the JavaScript file and Tick Pass execution context as first object

Mira_Ghaly_1-1618578035319.png

 

If this post helps you with your problem, please mark your as Accepted solution.If you like my response, please give it a Thumbs Up.

Blog: here
Billy_C
Post Patron
Post Patron

Hi @Mira_Ghaly,

 

So I have been trying to figure this out but for some reason it doesn't want to work so this is the following code I have created so far:

 

function showHideFields(executionContext) {
    var formContext = executionContext.getFormContext();
    var type = Xrm.Page.getAttribute("ika_applicableto").getValue();
    if (type != null) {
        switchvisibility(formContext, type, 966750000, "ika_company");
        switchvisibility(formContext, type, 966750001, "ika_contact");
        switchvisibility(formContext, type, 966750002, "ika_project");
        switchvisibility(formContext, type, 966750003, "ika_quote");
        switchvisibility(formContext, type, 966750004, "ika_order");
        switchvisibility(formContext, type, 966750005, "ika_delivery");
        switchvisibility(formContext, type, 966750006, "ika_application");
        switchvisibility(formContext, type, 966750007, "ika_invoice");
        switchvisibility(formContext, type, 966750008, "ika_payment");
    }
}

function switchvisibility(formContext, type, id, name) {
    if (type.indexOf(id) != -1) {
        //show field
        formContext.getControl(name).setVisible(true);
    } else {
        //hide field
        formContext.getControl(name).setVisible(false);
    }
}

 

So I mean it does work to some extent like when changing a value and when loading the form. The main issue is that when the value is null then its doesn't do anything.

I tried different methods to do this but it doesn't want to update that visibility.
Any ideas on this?

 

Thanks in advance,

 

Billy Cottrell

Billy_C
Post Patron
Post Patron

Hi @Mira_Ghaly,

 

I finally managed to get it to work this is the code that I am currently using:

function showHideFields(executionContext) {
    var formContext = executionContext.getFormContext();
    var type = Xrm.Page.getAttribute("ika_applicableto").getValue();
    var list = [
        {id: 966750000, name: "ika_company"},
        {id: 966750001, name: "ika_contact"}, 
        {id: 966750002, name: "ika_project"},
        {id: 966750003, name: "ika_quote"},
        {id: 966750004, name: "ika_order"},
        {id: 966750005, name: "ika_delivery"},
        {id: 966750006, name: "ika_application"},
        {id: 966750007, name: "ika_invoice"},
        {id: 966750008, name: "ika_payment"}
    ];
    if (type != null) {
        for (var i = 0; i < list.length; i++) {
            formContext.getControl(list[i].name).setVisible(type.indexOf(list[i].id) != -1 ? true : false);
        }
    } else {
        for (var i = 0; i < list.length; i++) {
            formContext.getControl(list[i].name).setVisible(false);
        }
    }
}

Sorry for the previous post, it's the first time I coded something for powerapps so I didn't know how it was working. I mean I am used to coding but I just didn't know how Powerapps was passing its data nor what data it actually was.

 

Anyways it works, thanks for all the help!

 

Kind regards,

 

Billy Cottrell

Anonymous
Not applicable

This was very helpful!

 

🙂

Hello, I know this is from a few years ago but I need help! When I put this code into power apps as an event handler, the error message I receive in CRM is "Cannot read properties of null (reading 'setVisible')" any ideas? The logical names of the controls I need to hide are exactly the same as they are in the system so I am definitely not sure why I would be getting that error. 

Any help is very appreciated!

Billy_C
Post Patron
Post Patron

Hi @tonyp1,

Please provide some more insight into your issue, because as of know I am unable to tell where the issue might be.
Here are some questions I have:
- Just to make sure, you are trying to use this on a form right?
- Did you enable "Pass execution context as a first parameter"?
- Are you able to do "executionContext.getFormContext()" without it being null?
- Are you able to access the getControl() method with the field you are trying to access without it being null?

if I'm not mistaken you can check the value by using console.log in the scripts aswell so you can see the values from the console.
If you still can't find the issue feel free to share a screenshot of the event handler settings that Mira showed above and share the code for the function you are trying to make so we can help you out.

Kind regards,

Billy

Hi Billy,

 

Thanks so much for looking into this; I seriously appreciate it!! To answer some of your questions,

 

- Yes, I am using this on a custom entity form that I created

- I did enable "Pass execution context as a first parameter"

- My beginner knowledge of JavaScript is making me hesitate to answer these last 2.

 

I have made some modifications and added some console log statements to see if I can identify the issue. I no longer get an error message on load, the correct sections do get hidden on load, however the issue is that no controls appear as I select options in the multi select field. According to the console log statements, my selected option and value is retrieved, all control names are retrieved, and all mapped control values are retrieved; it just seems like there is a piece missing that actually sets the control to visible. I will attach the code I am using, and a screenshot of the console log messages.

function showHideSections(executionContext) {
    var formContext = executionContext.getFormContext();
    var selectedValue = formContext.getAttribute("crf16_selectacategorytoshowproducts").getValue();

    // Array of section names and their corresponding option values
    var sectionMappings = {
        "filters": ["831590001"],
        "airgapfaucets": ["831590000"],
        "batterydispensingtips": ["831590002"],
        "dispensershardware": ["831590005"],
        "rosystemstanks": ["831590003"],
        "misc": ["831590008"],
        "autorepairparts": ["831590006"],
        "powersupplies": ["831590007"],
        "tubingsfittings": ["831590004"]
    };

    // Hide all sections first
    for (var sectionName in sectionMappings) {
        formContext.ui.tabs.forEach(function(tab) {
            var section = tab.sections.get(sectionName);
            if (section) {
                section.setVisible(false);
            } else {
                console.warn("Section not found:", sectionName);
            }
        });
    }

    // Show sections corresponding to the selected option value
    if (selectedValue) {
        console.log("Selected value:", selectedValue);
        console.log("Type of selected value:", typeof selectedValue);
        console.log("Properties of selected value object:", Object.keys(selectedValue));

        for (var sectionName in sectionMappings) {
            if (sectionMappings.hasOwnProperty(sectionName)) {
                console.log("Section name:", sectionName);
                console.log("Mapped option values:", sectionMappings[sectionName]);

                // Check if selectedValue is an array and contains elements
                if (Array.isArray(selectedValue) && selectedValue.length > 0) {
                    console.log("Selected option value:", selectedValue[0].id);
                    
                    // Check if the sectionMappings include the selected option value
                    if (sectionMappings[sectionName].includes(selectedValue[0].id)) {
                        console.log("Should show section:", sectionName);
                        formContext.ui.tabs.forEach(function(tab) {
                            var section = tab.sections.get(sectionName);
                            if (section) {
                                section.setVisible(true);
                            } else {
                                console.warn("Section not found:", sectionName);
                            }
                        });
                    }
                } else {
                    console.warn("Selected option value is invalid or empty.");
                }
            }
        }
    }
}

 

Screenshot of console:

tonyp1_0-1714485493577.png

Please let me know if you would like any additional information or if you have any questions. Any help is appreciated and I would really like to get this working. Thank you very much!

Billy_C
Post Patron
Post Patron

Hi @tonyp1,

So after looking at your code and trying to test it from the console I noticed 2 issues.

  1. The selectedValue that you are using is an array of a number while the sectionMappings are arrays of string causing the .include not to work as expected.
    Solution: Either convert the mapping ids to number and switch from using include to regular equal operator or just convert the selected value to a string and you can keep using the .include statement.
  2. In the console.log("Selected option value: ") you suddenly start adding .id for your selected value which isn't available since its an array of numbers thus having no properties.
    Solution: remove .id in both the console.log as inside the if statement

I think those 2 changes should make it work (unless I missed something else).
Feel free to let me know if you are still having issues with it!

Kind regards,

Billy

Wow, that really helped! Thank you so much! There seems to be one modification that needs to be made if you can help me even further- all the correct sections are being hidden and the sections are all properly mapped and conditionally showing, the problem is - if I have multiple options selected, only one section will show. It will always be the selected option closest to the top of the option set. So, if I start by selecting the option on the bottom of the list, it will appear as expected, but then if I click an option above it, it will be replaced with the next selection. 

 

Can I modify this somehow to show all of the selected mappings? Thank you again, you are a life saver!

Here is the most recent code:

function showHideSections(executionContext) {
    var formContext = executionContext.getFormContext();
    var selectedValue = formContext.getAttribute("crf16_selectacategorytoshowproducts").getValue();

    // Array of section names and their corresponding option values
    var sectionMappings = {
        "filters": ["831590001"],
        "airgapfaucets": ["831590000"],
        "batterydispensingtips": ["831590002"],
        "dispensershardware": ["831590005"],
        "rosystemstanks": ["831590003"],
        "misc": ["831590008"],
        "autorepairparts": ["831590006"],
        "powersupplies": ["831590007"],
        "tubingsfittings": ["831590004"]
    };

    // Hide all sections first
    for (var sectionName in sectionMappings) {
        formContext.ui.tabs.forEach(function(tab) {
            var section = tab.sections.get(sectionName);
            if (section) {
                section.setVisible(false);
            } else {
                console.warn("Section not found:", sectionName);
            }
        });
    }

    // Show sections corresponding to the selected option value
    if (selectedValue) {
        console.log("Selected value:", selectedValue);
        console.log("Type of selected value:", typeof selectedValue);
        console.log("Properties of selected value object:", Object.keys(selectedValue));

        for (var sectionName in sectionMappings) {
            if (sectionMappings.hasOwnProperty(sectionName)) {
                console.log("Section name:", sectionName);
                console.log("Mapped option values:", sectionMappings[sectionName]);

                // Check if selectedValue is an array and contains elements
                if (Array.isArray(selectedValue) && selectedValue.length > 0) {
                    console.log("Selected option value:", selectedValue[0]);
                    
                    // Convert selectedValue to a string for comparison
                    var stringValue = JSON.stringify(selectedValue[0]);

                    // Check if the sectionMappings include the selected option value
                    if (sectionMappings[sectionName].includes(stringValue)) {
                        console.log("Should show section:", sectionName);
                        formContext.ui.tabs.forEach(function(tab) {
                            var section = tab.sections.get(sectionName);
                            if (section) {
                                section.setVisible(true);
                            } else {
                                console.warn("Section not found:", sectionName);
                            }
                        });
                    }
                } else {
                    console.warn("Selected option value is invalid or empty.");
                }
            }
        }
    }
}

 

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