feat(ember): added validator that validates field based on another field

ember/app/utils/validations-when-other.js

@@ -0,0 +1,15 @@
+import validateWhenOther from 'outdated/validators/validate-when-other';
+
+const validationsWhenOther = ({
+  field,
+  otherFieldValidator,
+  fieldValidators,
+}) =>
+  fieldValidators.map((fv) =>
+    validateWhenOther({
+      field,
+      otherFieldValidator,
+      fieldValidator: fv,
+    }),
+  );
+export default validationsWhenOther;

ember/app/validators/validate-when-other.js

@@ -0,0 +1,13 @@
+import { get } from '@ember/object';
+
+export default function validateWhenOther(options = {}) {
+  return (key, value, oldValue, changes, content) => {
+    const { field, otherFieldValidator, fieldValidator } = options;
+    const fieldValue = get(changes, field) || get(content, field);
+
+    const result = otherFieldValidator(field, fieldValue, null, null, null);
+    if (result !== true) return true;
+
+    return fieldValidator(key, value, oldValue, changes, content);
+  };
+}