Enhancement: allow specifying default currency for Monetary custom field (#7381)

src-ui/src/app/components/common/custom-field-display/custom-field-display.component.spec.ts

@@ -20,6 +20,12 @@ const customFields: CustomField[] = [
       select_options: ['Option 1', 'Option 2', 'Option 3'],
     },
   },
+  {
+    id: 5,
+    name: 'Field 5',
+    data_type: CustomFieldDataType.Monetary,
+    extra_data: { default_currency: 'JPY' },
+  },
 ]
 const document: Document = {
   id: 1,
@@ -112,6 +118,18 @@ describe('CustomFieldDisplayComponent', () => {
     expect(component.value).toEqual(100)
   })
 
+  it('should respect explicit default currency', () => {
+    component['defaultCurrencyCode'] = 'EUR' // mock default locale injection
+    component.fieldId = 5
+    component.document = {
+      id: 1,
+      title: 'Doc 1',
+      custom_fields: [{ field: 5, document: 1, created: null, value: '100' }],
+    }
+    expect(component.currency).toEqual('JPY')
+    expect(component.value).toEqual(100)
+  })
+
   it('should show select value', () => {
     expect(component.getSelectValue(customFields[3], 2)).toEqual('Option 3')
   })

src-ui/src/app/components/common/custom-field-display/custom-field-display.component.ts

@@ -90,7 +90,9 @@ export class CustomFieldDisplayComponent implements OnInit, OnDestroy {
     )?.value
     if (this.value && this.field.data_type === CustomFieldDataType.Monetary) {
       this.currency =
-        this.value.match(/([A-Z]{3})/)?.[0] ?? this.defaultCurrencyCode
+        this.value.match(/([A-Z]{3})/)?.[0] ??
+        this.field.extra_data?.default_currency ??
+        this.defaultCurrencyCode
       this.value = parseFloat(this.value.replace(this.currency, ''))
     } else if (
       this.value?.length &&