Commit

node_modules/mongoose/lib/helpers/document/getEmbeddedDiscriminatorPath.js

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+'use strict';
+
+const get = require('../get');
+const getSchemaDiscriminatorByValue = require('../discriminator/getSchemaDiscriminatorByValue');
+
+/**
+ * Like `schema.path()`, except with a document, because impossible to
+ * determine path type without knowing the embedded discriminator key.
+ *
+ * @param {Document} doc
+ * @param {String|String[]} path
+ * @param {Object} [options]
+ * @api private
+ */
+
+module.exports = function getEmbeddedDiscriminatorPath(doc, path, options) {
+  options = options || {};
+  const typeOnly = options.typeOnly;
+  const parts = Array.isArray(path) ?
+    path :
+    (path.indexOf('.') === -1 ? [path] : path.split('.'));
+  let schemaType = null;
+  let type = 'adhocOrUndefined';
+
+  const schema = getSchemaDiscriminatorByValue(doc.schema, doc.get(doc.schema.options.discriminatorKey)) || doc.schema;
+
+  for (let i = 0; i < parts.length; ++i) {
+    const subpath = parts.slice(0, i + 1).join('.');
+    schemaType = schema.path(subpath);
+    if (schemaType == null) {
+      type = 'adhocOrUndefined';
+      continue;
+    }
+    if (schemaType.instance === 'Mixed') {
+      return typeOnly ? 'real' : schemaType;
+    }
+    type = schema.pathType(subpath);
+    if ((schemaType.$isSingleNested || schemaType.$isMongooseDocumentArrayElement) &&
+    schemaType.schema.discriminators != null) {
+      const discriminators = schemaType.schema.discriminators;
+      const discriminatorKey = doc.get(subpath + '.' +
+        get(schemaType, 'schema.options.discriminatorKey'));
+      if (discriminatorKey == null || discriminators[discriminatorKey] == null) {
+        continue;
+      }
+      const rest = parts.slice(i + 1).join('.');
+      return getEmbeddedDiscriminatorPath(doc.get(subpath), rest, options);
+    }
+  }
+
+  // Are we getting the whole schema or just the type, 'real', 'nested', etc.
+  return typeOnly ? type : schemaType;
+};