Add reject filter

mozilla · Mar 29, 2020 · 48263d7 · 48263d7
1 parent ec8eae5
commit 48263d7
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diff --git a/nunjucks/src/filters.js b/nunjucks/src/filters.js
@@ -2,6 +2,7 @@
 
 var lib = require('./lib');
 var r = require('./runtime');
+var tests = require('./tests');
 
 var exports = module.exports = {};
 
@@ -266,6 +267,16 @@ function random(arr) {
 
 exports.random = random;
 
+function reject(arr, testName = 'truthy', secondArg) {
+  const test = tests[testName] || tests.falsy;
+
+  return arr.filter(function applyToTest(item) {
+    return test(item, secondArg) === false;
+  });
+}
+
+exports.reject = reject;
+
 function rejectattr(arr, attr) {
   return arr.filter((item) => !item[attr]);
 }

diff --git a/tests/filters.js b/tests/filters.js
@@ -490,6 +490,22 @@
       finish(done);
     });
 
+    it('reject', function(done) {
+      var context = {
+        numbers: [0, 1, 2, 3, 4, 5]
+      };
+
+      equal('{{ numbers | reject("odd") | join }}', context, '024');
+
+      equal('{{ numbers | reject("even") | join }}', context, '135');
+
+      equal('{{ numbers | reject("divisibleby", 3) | join }}', context, '1245');
+
+      equal('{{ numbers | reject() | join }}', context, '0');
+
+      finish(done);
+    });
+
     it('rejectattr', function(done) {
       var foods = [{
         tasty: true