[BUGFIX] fix JS error and backend bug

django_dyn_dt/templates/index.html

@@ -7,7 +7,7 @@
 
     <!-- data-tables -->
     <link href="https://cdn.jsdelivr.net/npm/simple-datatables@latest/dist/style.css" rel="stylesheet" type="text/css">
-    <script src="https://cdn.jsdelivr.net/npm/simple-datatables@latest"               type="text/javascript"></script>
+    <script src="https://cdn.jsdelivr.net/npm/simple-datatables@3.2.0"               type="text/javascript"></script>
 
     <!-- bootstrap5 -->
     <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">

django_dyn_dt/templates/static/src/controller/index.js

@@ -212,7 +212,7 @@ export const exportData = (dataTable, type) => {
 
     const searchParam = new URLSearchParams(window.location.search).get('search') || ''
 
-    const hiddenColumns = myData.headings.filter((d,i) => !dataTable.columns().visible(i))
+    const hiddenColumns = myData.headings.filter((d,i) => !dataTable.columns.visible(i))
 
     fetch (`/datatb/${modelName}/export/`,
         {method: 'POST',body: JSON.stringify({

django_dyn_dt/views.py

@@ -3,6 +3,7 @@
 
 from django.core.exceptions import ValidationError
 from django.db.models import Q
+from django.db.models.fields.related import RelatedField
 from django.http import HttpResponse
 from django.shortcuts import render
 
@@ -22,18 +23,17 @@
 DYNAMIC_DATATB = {}
 
 try:
-    DYNAMIC_DATATB = getattr(settings, 'DYNAMIC_DATATB') 
-except:     
-    pass 
+    DYNAMIC_DATATB = getattr(settings, 'DYNAMIC_DATATB')
+except:
+    pass
 
 # TODO: 404 for wrong page number
 def data_table_view(request, **kwargs):
     try:
         model_class = Utils.get_class(DYNAMIC_DATATB, kwargs.get('model_name'))
     except KeyError:
         return render(request, '404.html', status=404)
-    headings = [field.name for field in model_class._meta.get_fields()]
-
+    headings = _get_headings(model_class)
     page_number = int(request.GET.get('page', 1))
     search_key = request.GET.get('search', '')
     entries = int(request.GET.get('entries', 10))
@@ -149,8 +149,7 @@ def export(request, **kwargs):
     export_type = request_body.get('type', 'csv')
     filter_options = Q()
 
-    headings = filter(lambda field: field.name not in hidden,
-                      [field for field in model_class._meta.get_fields()])
+    headings = filter(lambda field: field.name not in hidden, _get_headings(model_class))
     headings = list(headings)
     for field in headings:
         field_name = field.name
@@ -230,3 +229,19 @@ def get_random_string(length):
     # choose from all lowercase letter
     letters = string.ascii_lowercase
     return ''.join(random.choice(letters) for i in range(length))
+
+
+def _get_headings(model_class, filter_relations=True):
+    headings = []
+    for field in model_class._meta.get_fields():
+        if filter_relations and _is_relation_field(field):
+            continue
+        headings.append(field.name)
+    return headings
+
+def _is_relation_field(field):
+    is_many_to_many_field = field.many_to_many is not None
+    is_many_to_one_field = field.many_to_one is not None
+    is_one_to_many_field = field.one_to_many is not None
+    is_one_to_one_field = field.one_to_one is not None
+    return is_many_to_many_field or is_many_to_one_field or is_one_to_many_field or is_one_to_one_field