Merge pull request #121 from azendoo/custom-encode-params-method

Add support third-party library to serialize url params

lib/adapters/xhr.js

@@ -29,7 +29,7 @@ module.exports = function xhrAdapter(resolve, reject, config) {
 
   // Create the request
   var request = new (XMLHttpRequest || ActiveXObject)('Microsoft.XMLHTTP');
-  request.open(config.method.toUpperCase(), buildUrl(config.url, config.params), true);
+  request.open(config.method.toUpperCase(), buildUrl(config.url, config.params, config.paramsSerializer), true);
 
   // Set the request timeout in MS
   request.timeout = config.timeout;

lib/helpers/buildUrl.js

@@ -20,39 +20,47 @@ function encode(val) {
  * @param {object} [params] The params to be appended
  * @returns {string} The formatted url
  */
-module.exports = function buildUrl(url, params) {
+module.exports = function buildUrl(url, params, paramsSerializer) {
   if (!params) {
     return url;
   }
 
-  var parts = [];
+  var serializedParams;
+  if (paramsSerializer) {
+    serializedParams = paramsSerializer(params);
+  }
+  else {
+    var parts = [];
 
-  utils.forEach(params, function (val, key) {
-    if (val === null || typeof val === 'undefined') {
-      return;
-    }
-
-    if (utils.isArray(val)) {
-      key = key + '[]';
-    }
-
-    if (!utils.isArray(val)) {
-      val = [val];
-    }
-
-    utils.forEach(val, function (v) {
-      if (utils.isDate(v)) {
-        v = v.toISOString();
+    utils.forEach(params, function (val, key) {
+      if (val === null || typeof val === 'undefined') {
+        return;
       }
-      else if (utils.isObject(v)) {
-        v = JSON.stringify(v);
+
+      if (utils.isArray(val)) {
+        key = key + '[]';
       }
-      parts.push(encode(key) + '=' + encode(v));
+
+      if (!utils.isArray(val)) {
+        val = [val];
+      }
+
+      utils.forEach(val, function (v) {
+        if (utils.isDate(v)) {
+          v = v.toISOString();
+        }
+        else if (utils.isObject(v)) {
+          v = JSON.stringify(v);
+        }
+        parts.push(encode(key) + '=' + encode(v));
+      });
     });
-  });
 
-  if (parts.length > 0) {
-    url += (url.indexOf('?') === -1 ? '?' : '&') + parts.join('&');
+    serializedParams = parts.join('&');
+  }
+
+  if (serializedParams) {
+    url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;
   }
 
   return url;