Copy window query params when fetching the openapi document

Closes #208.

docs/settings.rst

@@ -248,6 +248,14 @@ Re-fetch the OpenAPI document without credentials after authorization is removed
 **Default**: :python:`'False` |br|
 *Maps to parameter*: -
 
+FETCH_SCHEMA_WITH_QUERY
+-----------------------
+
+Fetch the OpenAPI document using the query parameters passed to the swagger-ui page request.
+
+**Default**: :python:`'True` |br|
+*Maps to parameter*: -
+
 OPERATIONS_SORTER
 -----------------
 
@@ -441,5 +449,13 @@ Show required properties first ordered in the same order as in required array.
 **Default**: :python:`False` |br|
 *Maps to attribute*: ``requiredPropsFirst``
 
+FETCH_SCHEMA_WITH_QUERY
+-----------------------
+
+Fetch the OpenAPI document using the query parameters passed to the ReDoc page request.
+
+**Default**: :python:`'True` |br|
+*Maps to parameter*: -
+
 
 .. _FORCE_SCRIPT_NAME: https://docs.djangoproject.com/en/2.0/ref/settings/#force-script-name

src/drf_yasg/app_settings.py

@@ -45,6 +45,7 @@ SWAGGER_DEFAULTS = {
     'PERSIST_AUTH': False,
     'REFETCH_SCHEMA_WITH_AUTH': False,
     'REFETCH_SCHEMA_ON_LOGOUT': False,
+    'FETCH_SCHEMA_WITH_QUERY': True,
 
     'OPERATIONS_SORTER': None,
     'TAGS_SORTER': None,
@@ -77,6 +78,7 @@ REDOC_DEFAULTS = {
     'PATH_IN_MIDDLE': False,
     'NATIVE_SCROLLBARS': False,
     'REQUIRED_PROPS_FIRST': False,
+    'FETCH_SCHEMA_WITH_QUERY': True,
 }
 
 IMPORT_STRINGS = [

src/drf_yasg/renderers.py

@@ -137,6 +137,7 @@ class SwaggerUIRenderer(_UIRenderer):
             'persistAuth': swagger_settings.PERSIST_AUTH,
             'refetchWithAuth': swagger_settings.REFETCH_SCHEMA_WITH_AUTH,
             'refetchOnLogout': swagger_settings.REFETCH_SCHEMA_ON_LOGOUT,
+            'fetchSchemaWithQuery': swagger_settings.FETCH_SCHEMA_WITH_QUERY,
         }
 
         data = filter_none(data)
@@ -164,6 +165,7 @@ class ReDocRenderer(_UIRenderer):
             'pathInMiddlePanel': redoc_settings.PATH_IN_MIDDLE,
             'nativeScrollbars': redoc_settings.NATIVE_SCROLLBARS,
             'requiredPropsFirst': redoc_settings.REQUIRED_PROPS_FIRST,
+            'fetchSchemaWithQuery': redoc_settings.FETCH_SCHEMA_WITH_QUERY,
         }
 
         return filter_none(data)

src/drf_yasg/static/drf-yasg/redoc-init.js

@@ -7,8 +7,20 @@ var redoc = document.createElement("redoc");
 var redocSettings = JSON.parse(document.getElementById('redoc-settings').innerHTML);
 if (redocSettings.url) {
     specURL = redocSettings.url;
-    delete redocSettings.url;
 }
+delete redocSettings.url;
+if (redocSettings.fetchSchemaWithQuery) {
+    var query = new URLSearchParams(window.location.search).entries();
+    var url = specURL.split('?');
+    var usp = new URLSearchParams(url[1]);
+    for (var it = query.next(); !it.done; it = query.next()) {
+        usp.set(it.value[0], it.value[1]);
+    }
+    url[1] = usp.toString();
+    specURL = url[1] ? url.join('?') : url[0];
+}
+delete redocSettings.fetchSchemaWithQuery;
+
 redoc.setAttribute("spec-url", specURL);
 
 function camelToKebab(str) {

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

@@ -91,9 +91,11 @@ function initSwaggerUiConfig(swaggerSettings, oauth2Settings) {
     var persistAuth = swaggerSettings.persistAuth;
     var refetchWithAuth = swaggerSettings.refetchWithAuth;
     var refetchOnLogout = swaggerSettings.refetchOnLogout;
+    var fetchSchemaWithQuery = swaggerSettings.fetchSchemaWithQuery;
     delete swaggerSettings['persistAuth'];
     delete swaggerSettings['refetchWithAuth'];
     delete swaggerSettings['refetchOnLogout'];
+    delete swaggerSettings['fetchSchemaWithQuery'];
 
     for (var p in swaggerSettings) {
         if (swaggerSettings.hasOwnProperty(p)) {
@@ -101,6 +103,15 @@ function initSwaggerUiConfig(swaggerSettings, oauth2Settings) {
         }
     }
 
+    if (fetchSchemaWithQuery) {
+        // only add query params from document for the first spec request
+        // this ensures we otherwise honor the spec selector box which might be manually modified
+        var query = new URLSearchParams(window.location.search).entries();
+        for (var it = query.next(); !it.done; it = query.next()) {
+            swaggerUiConfig.url = setQueryParam(swaggerUiConfig.url, it.value[0], it.value[1]);
+        }
+    }
+
     if (persistAuth || refetchWithAuth) {
         var hookedAuth = false;
         if (persistAuth) {
@@ -132,7 +143,6 @@ function initSwaggerUiConfig(swaggerSettings, oauth2Settings) {
             var headers = request.headers || {};
             if (request.loadSpec) {
                 var newUrl = request.url;
-
                 if (refetchWithAuth) {
                     newUrl = applyAuth(savedAuth, newUrl, headers) || newUrl;
                 }

src/drf_yasg/templates/drf-yasg/redoc.html

@@ -38,6 +38,7 @@
 
 {% block main_scripts %}
     <script src="{% static 'drf-yasg/insQ.min.js' %}"></script>
+    <script src="{% static 'drf-yasg/url-polyfill.min.js' %}"></script>
     <script src="{% static 'drf-yasg/redoc-init.js' %}"></script>
     <script src="{% static 'drf-yasg/redoc/redoc.min.js' %}"></script>
 {% endblock %}