fix(startup): Fix the failing django/postgres startup by moving database query...

fix(startup): Fix the failing django/postgres startup by moving database query in form to __init__ function of DataSetEditForm. Now the choices query is also run everytime the form is called.

discuss_data/dddatasets/forms.py

@@ -146,11 +146,8 @@ class DataSetForm(ModelForm):
 
 
 class DataSetEditForm(ModelForm):
-    categories_choices = list()
-    for category in Category.objects.all().order_by("name"):
-        categories_choices.append((category.id, category.name))
     main_category = forms.CharField(required=False)
-    categories = forms.MultipleChoiceField(required=False, choices=categories_choices)
+    categories = forms.MultipleChoiceField(required=False, choices=[])
 
     class Meta:
         model = DataSet
@@ -167,7 +164,6 @@ class DataSetEditForm(ModelForm):
     helper.form_tag = False
     helper.help_text_inline = False
     helper.layout = Layout(
-        # HTML(ADD_EDIT_HEADING),
         Div(
             Div("title", css_class="col-md-12",),
             Div("subtitle", css_class="col-md-12",),
@@ -175,7 +171,6 @@ class DataSetEditForm(ModelForm):
             HTML(
                 "<span ic-get-from='{% url 'core:load' %}' ic-trigger-on='load'></span>"
             ),
-            Div("categories", css_class="col-md-4",),
             css_class="row",
         ),
         HTML(REQ_FIELD),
@@ -183,6 +178,18 @@ class DataSetEditForm(ModelForm):
         Div(HTML(UPDATED_MSG),),
     )
 
+    # init form at every request to update categories queried from db
+    def __init__(self, *args, **kwargs):
+        super(DataSetEditForm, self).__init__(*args, **kwargs)
+        self.fields["categories"] = forms.MultipleChoiceField(
+            required=False,
+            choices=[
+                (category.id, category.name)
+                for category in Category.objects.all().order_by("name")
+            ],
+        )
+        # forms.ChoiceField(choices=[(category.id, category.name) for color in Color.objects.all()])
+
 
 class DataSetImageUploadForm(ModelForm):
     # TODO: updated image needs to be loaded at save