Validations on components

[RezaKargar]

Hi to all 👋

I just opened this discussion to have some sort of Q&A discussion 😁🤷‍♂️

I saw some issues about implementing the validations for some components,
I read the similar solved issues code changes and got some kind of understanding the way how to implement the validation for components
I just mention the steps that I think should be followed to solve those kind of issues, please check them and correct me it they're incorrect:

1. Change the component to inherit BitComponentBase<T> instead of BitComponentBase
2. Take care of conflicts for Value property of BitComponentBase and rename the actual value property of component itself if needed
3. Override the TryParseValueFromString method of BitComponentBase
   • I think this is for trying to pars the value of component from a string and if the parsing fails, give corresponding validation message otherwise result will be the parsed value
4. Modify RegisterComponentClasses method for providing the -invalid- style class when value is invalid
5. Add corresponding -invalid- css style for the component

I know this may be long but there are some more unknowns for me:

• How can I make the component to be invalid for test purposes?
• When I should implement and override Dispose method and when not?

I'll be so grateful if you help me on this,
I try to learn from your repo and also try to help ✌️😉

[msynk]

Hello Reza,

thanks for submitting this discussion and introducing this important topic.

first of all only the input components can have validation infrastructure in them.
input components are all components that in a way are receiving a specific value from the user interaction.

and secondly, the base class should be BitInputBase<T> type.

other parts of your demonstration are correct.

in order to test the validation, you need a separate test .razor file with a specific EditForm component in it and a model with .net validation enabled (through DataAnnotation attributes or any other ways).
(we have a sample coming up in a PR that is under review atm)

The dispose method should be used like any other classes in .net, whenever you need to dispose of something 😉