Nested matching works for array fields

lib/model.js

@@ -296,6 +296,22 @@ matcherFunctions.$eq = function (objValue, value) {
 };
 
 
+/**
+ * Match any of the subconditions
+ */
+matcherFunctions.$or = function (obj, query) {
+  var i;
+
+  if (!util.isArray(query)) { throw "$or operator used without an array"; }
+
+  for (i = 0; i < query.length; i += 1) {
+    if (match(obj, query[i])) { return true; }
+  }
+
+  return false;
+};
+
+
 /**
  * Tell if a given document matches a query
  * @param {Object} obj Document to check
@@ -323,6 +339,13 @@ function matchQueryKey (obj, query, queryKey) {
     , i
     ;
 
+  if (queryKey[0] === '$') {
+    // We apply an operator like $or, $and
+    if (!matcherFunctions[queryKey]) { throw "Unknown query operator " + queryKey; }
+
+    return matcherFunctions[queryKey](obj, queryValue);
+  } else {
+    // Normal field matching
     if (util.isArray(objValue)) {
       for (i = 0; i < objValue.length; i += 1) {
         if (matcherFunctions.$eq(objValue[i], queryValue)) { return true; }
@@ -333,6 +356,7 @@ function matchQueryKey (obj, query, queryKey) {
     }
 
     return true;
+  }
 }
 
 

test/model.test.js

@@ -414,11 +414,27 @@ describe('Model', function () {
 
       it('For field array, a match means a match on at least one element', function () {
         model.match({ tags: ['node', 'js', 'db'] }, { tags: 'python' }).should.equal(false);
+        model.match({ tags: ['node', 'js', 'db'] }, { tagss: 'js' }).should.equal(false);
         model.match({ tags: ['node', 'js', 'db'] }, { tags: 'js' }).should.equal(true);
         model.match({ tags: ['node', 'js', 'db'] }, { tags: 'js', tags: 'node' }).should.equal(true);
 
         // Mixed matching with array and non array
         model.match({ tags: ['node', 'js', 'db'], nedb: true }, { tags: 'js', nedb: true }).should.equal(true);
+
+        // Nested matching
+        model.match({ number: 5, data: { tags: ['node', 'js', 'db'] } }, { "data.tags": 'js' }).should.equal(true);
+        model.match({ number: 5, data: { tags: ['node', 'js', 'db'] } }, { "data.tags": 'j' }).should.equal(false);
+      });
+
+    });
+
+
+    describe('$or', function () {
+
+      it('Any of the subconditions can be used', function () {
+        model.match({ hello: 'world' }, { $or: [ { hello: 'pluton' }, { hello: 'world' } ] }).should.equal(true);
+        model.match({ hello: 'pluton' }, { $or: [ { hello: 'pluton' }, { hello: 'world' } ] }).should.equal(true);
+        model.match({ hello: 'nope' }, { $or: [ { hello: 'pluton' }, { hello: 'world' } ] }).should.equal(false);
       });
 
     });