[UPDT] PAYROLL: Added validations to loan creation

payroll/forms/component_forms.py

@@ -658,6 +658,21 @@ def __init__(self, *args, **kwargs):
                 if field in self.fields:
                     del self.fields[field]
 
+    def clean(self, *args, **kwargs):
+        cleaned_data = super().clean(*args, **kwargs)
+
+        if cleaned_data.get("installment_start_date") < cleaned_data.get(
+            "provided_date"
+        ):
+            raise forms.ValidationError(
+                "Installment start date should be greater than or equal to provided date"
+            )
+
+        if cleaned_data.get("installments") <= 0:
+            raise forms.ValidationError("Installments needs to be a positive integer")
+
+        return cleaned_data
+
 
 class AssetFineForm(LoanAccountForm):
     verbose_name = "Asset Fine"