In my current project, I am utilizing Ionic@3 searchbar and we are looking to implement input validation on it. Specifically, we need to set a minimum length restriction and apply some pattern matching. I am aware that Angular offers input validators for validation purposes, but these seem to be limited to input types and do not directly apply to the Ionic searchbar (even though the searchbar contains an input element).
What is the best way to perform input validation on an Ionic searchbar?
If you're dealing with validations for the search bar input, it's best to handle them within the component code itself. Check out this live example for reference.
In the provided demo, a validation has been added in the getItems method to verify the length of the input value:
// Validate input length
if(val.length < 5) {
this.errorMessage = 'Please enter at least 5 characters...';
return;
}
You can also include other validations like matching a specific pattern. This approach is considered clean as accessing the input directly would be more of a workaround due to how the search bar wraps the input field.
View
...Component
...To view the demonstration, please click on this link:https://stackblitz.com/edit/filter-validate-ionic-2?embed=1&file=pages/home/home.ts
Within the demonstration, I have incorporated a check within the getItems method to verify the length of the searched value:
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