Add simple function for determining OPTIONS

InvenTree/InvenTree/urls.py

@@ -103,6 +103,8 @@ settings_urls = [
 
 # Some javascript files are served 'dynamically', allowing them to pass through the Django translation layer
 dynamic_javascript_urls = [
+    url(r'^api.js', DynamicJsView.as_view(template_name='js/api.js'), name='api.js'),
+    url(r'^forms.js', DynamicJsView.as_view(template_name='js/forms.js'), name='forms.js'),
     url(r'^modals.js', DynamicJsView.as_view(template_name='js/modals.js'), name='modals.js'),
     url(r'^barcode.js', DynamicJsView.as_view(template_name='js/barcode.js'), name='barcode.js'),
     url(r'^bom.js', DynamicJsView.as_view(template_name='js/bom.js'), name='bom.js'),

InvenTree/templates/base.html

@@ -144,11 +144,12 @@
 
 <!-- general InvenTree -->
 <script type='text/javascript' src="{% static 'script/inventree/inventree.js' %}"></script>
-<script type='text/javascript' src="{% static 'script/inventree/api.js' %}"></script>
 <script type='text/javascript' src="{% static 'script/inventree/notification.js' %}"></script>
 <script type='text/javascript' src="{% static 'script/inventree/sidenav.js' %}"></script>
 
 <!-- translated -->
+<script type='text/javascript' src="{% i18n_static 'api.js' %}"></script>
+<script type='text/javascript' src="{% i18n_static 'forms.js' %}"></script>
 <script type='text/javascript' src="{% i18n_static 'barcode.js' %}"></script>
 <script type='text/javascript' src="{% i18n_static 'bom.js' %}"></script>
 <script type='text/javascript' src="{% i18n_static 'company.js' %}"></script>

InvenTree/templates/js/forms.js

@@ -0,0 +1,38 @@
+/**
+ * This file contains code for rendering (and managing) HTML forms
+ * which are served via the django-drf API.
+ * 
+ * The django DRF library provides an OPTIONS method for each API endpoint,
+ * which allows us to introspect the available fields at any given endpoint.
+ * 
+ * The OPTIONS method provides the following information for each available field:
+ * 
+ * - Field name
+ * - Field label (translated)
+ * - Field help text (translated)
+ * - Field type
+ * - Read / write status
+ * - Field required status
+ * - min_value / max_value 
+ */
+
+
+/*
+ * Get the API endpoint options at the provided URL,
+ * using a HTTP options request.
+ */
+function getApiEndpointOptions(url, options={}) {
+
+    $.ajax({
+        url: url,
+        type: 'OPTIONS',
+        contentType: 'application/json',
+        dataType: 'json',
+        accepts: {
+            json: 'application/json',
+        },
+        success: function(response) {
+            console.log(response);
+        }
+    });
+}