Using integer as data source for checkbox

[rene]

In the database (table "project") I only have an integer attribute ("Inactive"). How can I use this attribute as a data source for my checkbox and also convert and write it back as an integer?

Currently I use this for my value property: ${project.Inactive == 1} what shows the correct value.

But I get an error inside the CheckBox component, saying: "The type or namespace name 'EditProjectComponent' could not be found (are you missing a using directive or an assembly revernece?)

According to Data binding with a string value using a Checkbox - Radzen IDE (Blazor server-side) - Radzen I understand that the checkbox component needs a boolean.

1. So I guess I have to implement a conversion on the change event to get the "Checked" parameter of the checkbox back into the database. What type do I need (Invoke data source method? and what are the parameters.
   
   
2. Do I need to do this over a custom poperty on my page or can I change the project.Inactive variable of the model?

[enchev]

The best option is to add additional boolean property to your model and use it for the CheckBox. You can check something similar here:

Extend model with additional property (Blazor)

[rene]

Thank you for the quick response about the link about how to extend my model. I read it carefully. The concept will come in handy one time, for sure. I will consider that way, when I need additional business logic to create a boolean out of a more complex value (my integer is only just 0 or 1 or NULL).

I found a way that works on the "UI" side, please let me know, if you consider this bad practice.

1. I checked the json file first:

                                {
                                  "name": "projectInactiveCheckbox",
                                  "type": "checkbox",
                                  "value": "${project.Inactive == 1}",
                                  "valueType": "Cora.Pages.EditProjectComponent"
                                }

The valueType made me worring, so I changed it to bool

                                {
                                  "name": "projectInactiveCheckbox",
                                  "type": "checkbox",
                                  "value": "${project.Inactive == 1}",
                                  "valueType": "bool"
                                }

2. Then I reloaded the project in Radzen and created a new Change event in the "Events" tab:
   With the Type "Execute C#" and the code:

project.Inactive = args ? 1 : 0

The checkbox seems to be correctly interpreted and saved as 1 or 0 in the database, as soon I click the save button in the form:

The working configuration in the .json-file looks like this:

"components": [
{
  "events": {
	"change": [
	  {
		"code": "project.Inactive = args ? 1 : 0",
		"type": "execute"
	  }
	]
  },
  "name": "projectInactiveCheckbox",
  "type": "checkbox",
  "value": "${project.Inactive == 1}",
  "valueType": "bool"
}
],