add nova

nova/resources/js/mixins/HandlesValidationErrors.js

@@ -0,0 +1,49 @@
+import { Errors } from 'form-backend-validation'
+
+export default {
+  props: {
+    errors: { default: () => new Errors() },
+  },
+
+  inject: { index: { default: null }, viaParent: { default: null } },
+
+  data: () => ({
+    errorClass: 'form-control-bordered-error',
+  }),
+
+  computed: {
+    errorClasses() {
+      return this.hasError ? [this.errorClass] : []
+    },
+
+    fieldAttribute() {
+      return this.field.attribute
+    },
+
+    validationKey() {
+      return this.nestedValidationKey || this.field.validationKey
+    },
+
+    hasError() {
+      return this.errors.has(this.validationKey)
+    },
+
+    firstError() {
+      if (this.hasError) {
+        return this.errors.first(this.validationKey)
+      }
+    },
+
+    nestedAttribute() {
+      if (this.viaParent) {
+        return `${this.viaParent}[${this.index}][${this.field.attribute}]`
+      }
+    },
+
+    nestedValidationKey() {
+      if (this.viaParent) {
+        return `${this.viaParent}.${this.index}.fields.${this.field.attribute}`
+      }
+    },
+  },
+}