Form

Form component for Universal Dashboard

Forms provide a way to collect data from users.

Forms can include any type of control you want. This allows you to customize the look and feel and use any input controls.

Data entered via the input controls will be sent back to the the OnSubmit script block when the form is submitted. Within the OnSubmit event handler, you will access to the $EventData variable that will contain properties for each of the fields in the form.

For example, if you have two fields, you will have two properties on $EventData.

New-UDForm -Content {
    New-UDTextbox -Id 'txtTextField'
    New-UDCheckbox -Id 'chkCheckbox'
} -OnSubmit {
    Show-UDToast -Message $EventData.txtTextField
    Show-UDToast -Message $EventData.chkCheckbox
}

Supported Controls

The following input controls automatically integrate with a form. The values that are set within these controls will be sent during validation and in the OnSubmit event handler.

• Autocomplete

• Checkbox

• Date Picker

• Radio

• Select

• Slider

• Switch

• Textbox

• Time Picker

• Upload

Simple Form

Simple forms can use inputs like text boxes and checkboxes.

New-UDForm -Content {
    New-UDTextbox -Id 'txtTextfield'
    New-UDCheckbox -Id 'chkCheckbox'
} -OnSubmit {
    Show-UDToast -Message $EventData.txtTextfield
    Show-UDToast -Message $EventData.chkCheckbox
}

Formatting a Form

Since forms can use any component, you can use standard formatting components within the form.

New-UDForm -Content {

    New-UDRow -Columns {
        New-UDColumn -SmallSize 6 -LargeSize 6 -Content {
            New-UDTextbox -Id 'txtFirstName' -Label 'First Name' 
        }
        New-UDColumn -SmallSize 6 -LargeSize 6 -Content {
            New-UDTextbox -Id 'txtLastName' -Label 'Last Name'
        }
    }

    New-UDTextbox -Id 'txtAddress' -Label 'Address'

    New-UDRow -Columns {
        New-UDColumn -SmallSize 6 -LargeSize 6  -Content {
            New-UDTextbox -Id 'txtState' -Label 'State'
        }
        New-UDColumn -SmallSize 6 -LargeSize 6  -Content {
            New-UDTextbox -Id 'txtZipCode' -Label 'ZIP Code'
        }
    }

} -OnSubmit {
    Show-UDToast -Message $EventData.txtFirstName
    Show-UDToast -Message $EventData.txtLastName
}

Returning Components

When a form is submitted, you can optionally return another component to replace the form on the page. You can return any Universal Dashboard component. All you need to do is ensure that the component is written to the pipeline within the OnSubmit event handler.

New-UDForm -Content {
    New-UDTextbox -Id 'txtTextfield'
} -OnSubmit {
    New-UDTypography -Text $EventData.txtTextfield
}

Validating a Form

Form validation can be accomplished by using the OnValidate script block parameter

New-UDForm -Content {
    New-UDTextbox -Id 'txtValidateForm'
} -OnValidate {
    $FormContent = $EventData

    if ($FormContent.txtValidateForm -eq $null -or $FormContent.txtValidateForm -eq '') {
        New-UDFormValidationResult -ValidationError "txtValidateForm is required"
    } else {
        New-UDFormValidationResult -Valid
    }
} -OnSubmit {
    Show-UDToast -Message $Body
}

Canceling a Form

You can define an -OnCancel event handler to invoke when the cancel button is pressed. This can be used to take actions like close a modal.

New-UDButton -Text 'On Form' -OnClick {
    Show-UDModal -Content {
        New-UDForm -Content {
            New-UDTextbox -Label 'Hello'
        } -OnSubmit {
            Show-UDToast -Message 'Submitted!'
            Hide-UDModal
        } -OnCancel {
            Hide-UDModal
        }
    }
}

Displaying output without Replacing the form

Although you can return components directly from a form, you may want to retain the form so users can input data again. To do so, you can use Set-UDElement and a placeholder element that you can set the content to.

In this example, we have an empty form that, when submitted, will update the results element with a UDCard.

New-UDForm -Content {

} -OnSubmit {
   Set-UDElement -Id 'results' -Content {
      New-UDCard -Content { "Hello " + (Get-Date) }
   }
}

New-UDElement -Id 'results' -Tag 'div'

New-UDForm

Name	Type	Description	Required
Id	String	The ID of the component. It defaults to a random GUID.	false
Children	ScriptBlock	Controls that make up this form. This can be any combination of controls. Input controls will report their state to the form.	true
OnSubmit	Endpoint	A script block that is execute when the form is submitted. You can return controls from this script block and the form will be replaced by the script block. The $EventData variable will contain a hashtable of all the input fields and their values.	true
OnValidate	Endpoint	A script block that validates the form. Return the result of a call to New-UDFormValidationResult.	false
OnProcessing	ScriptBlock	A script block that is called when the form begins processing. The return value of this script block should be a component that displays a loading dialog. The script block will receive the current form data.	false
OnCancel	Endpoint	An endpoint that is called when this form is cancelled. When this parameter is defined a cancel button will appear.	false

New-UDFormValidationResult

Name	Type	Description	Required
Valid	SwitchParameter	Whether the form status is considered valid.	false
ValidationError	String	An error to display if the form is not valid.	false