Add DISPLAY_OPERATION_ID setting for swagger-ui

Closes #206.

docs/settings.rst

@@ -332,6 +332,14 @@ This does not filter the operations from the display.
 **Default**: :python:`['get','put','post','delete','options','head','patch','trace']` |br|
 *Maps to parameter*: ``supportedSubmitMethods``
 
+DISPLAY_OPERATION_ID
+--------------------
+
+Controls the display of operationId in operations list.
+
+**Default**: :python:`True`
+*Maps to parameter*: ``displayOperationId``
+
 **************
 REDOC_SETTINGS
 **************

src/drf_yasg/app_settings.py

@@ -63,6 +63,7 @@ SWAGGER_DEFAULTS = {
         'patch',
         'trace'
     ],
+    'DISPLAY_OPERATION_ID': True,
 }
 
 REDOC_DEFAULTS = {

src/drf_yasg/renderers.py

@@ -133,6 +133,7 @@ class SwaggerUIRenderer(_UIRenderer):
             'showCommonExtensions': swagger_settings.SHOW_COMMON_EXTENSIONS,
             'oauth2RedirectUrl': swagger_settings.OAUTH2_REDIRECT_URL,
             'supportedSubmitMethods': swagger_settings.SUPPORTED_SUBMIT_METHODS,
+            'displayOperationId': swagger_settings.DISPLAY_OPERATION_ID,
         }
 
         data = filter_none(data)

src/drf_yasg/static/drf-yasg/swagger-ui-init.js

@@ -32,7 +32,6 @@ function initSwaggerUi() {
     var swaggerConfig = {
         url: specURL,
         dom_id: '#swagger-ui',
-        displayOperationId: true,
         displayRequestDuration: true,
         presets: [
             SwaggerUIBundle.presets.apis,