Prevent duplicate custom fields

Author: Emmanouil Konstantinidis

rest_framework_docs/static/rest_framework_docs/js/components/request.js

@@ -35,6 +35,9 @@ var Request = React.createClass({
     var endpoint = this.state.endpoint;
     var fields = endpoint.fields;
 
+    // Check if field already exists
+    if (_.findWhere(fields, {'name': fieldName})) return;
+
     fields.push({
       name: fieldName,
       required: false,

rest_framework_docs/static/rest_framework_docs/js/dist.js

@@ -33142,6 +33142,9 @@
 	    var endpoint = this.state.endpoint;
 	    var fields = endpoint.fields;
 
+	    // Check if field already exists
+	    if (_.findWhere(fields, { 'name': fieldName })) return;
+	
 	    fields.push({
 	      name: fieldName,
 	      required: false,