Blog

Mert Özen's blog posts on software development, backend, frontend, and DevOps.

Series

Angular Reactive Forms: FormGroup, FormBuilder, FormArray and Validators

Reactive forms in Angular 12: building the form in the class with FormControl, FormGroup and FormBuilder, custom and async validators, dynamic fields with FormArray, valueChanges and patchValue.

31 Oct 2026 8 min 3

Frontend PART 15

Angular Template-driven Forms: ngModel, ngForm and Form Validation

We build a template-driven form in Angular 12: FormsModule, ngModel and name, ngForm with ngSubmit, required/email/pattern validators, touched/dirty states, CSS classes and ngModelGroup.

31 Oct 2026 7 min 4

Backend PART 08

Model Validation: Validating Incoming Data with Data Annotations and FluentValidation

We cover validating incoming data: defining quick rules with Data Annotations, the automatic validation of [ApiController], and FluentValidation for complex rules. What to choose and when?

2 Aug 2026 12 min 312