fix: import export selectable fields (#431)

README.md

@@ -839,11 +839,12 @@ Adding support for django-guardian is quote straightforward in Unfold, just add
 
 from unfold.admin import ModelAdmin
 from import_export.admin import ImportExportModelAdmin
-from unfold.contrib.import_export.forms import ExportForm, ImportForm
+from unfold.contrib.import_export.forms import ExportForm, ImportForm, SelectableFieldsExportForm
 
 class ExampleAdmin(ModelAdmin, ImportExportModelAdmin):
     import_form_class = ImportForm
     export_form_class = ExportForm
+    # export_form_class = SelectableFieldsExportForm
 ```
 
 When implementing `import_export.admin.ExportActionModelAdmin` class in admin panel, import_export plugin adds its own implementation of action form which is not incorporating Unfold CSS classes. For this reason, `unfold.contrib.import_export.admin` contains class with the same name `ExportActionModelAdmin` which inherits behavior of parent form and adds appropriate CSS classes.

src/unfold/contrib/import_export/forms.py

@@ -1,6 +1,14 @@
+from django.forms.fields import BooleanField
 from import_export.forms import ExportForm as BaseExportForm
 from import_export.forms import ImportForm as BaseImportForm
-from unfold.widgets import SELECT_CLASSES, UnfoldAdminFileFieldWidget
+from import_export.forms import (
+    SelectableFieldsExportForm as BaseSelectableFieldsExportForm,
+)
+from unfold.widgets import (
+    SELECT_CLASSES,
+    UnfoldAdminFileFieldWidget,
+    UnfoldBooleanWidget,
+)
 
 
 class ImportForm(BaseImportForm):
@@ -17,3 +25,14 @@ def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.fields["resource"].widget.attrs["class"] = " ".join(SELECT_CLASSES)
         self.fields["format"].widget.attrs["class"] = " ".join(SELECT_CLASSES)
+
+
+class SelectableFieldsExportForm(BaseSelectableFieldsExportForm):
+    def __init__(self, formats, resources, **kwargs):
+        super().__init__(formats, resources, **kwargs)
+        self.fields["resource"].widget.attrs["class"] = " ".join(SELECT_CLASSES)
+        self.fields["format"].widget.attrs["class"] = " ".join(SELECT_CLASSES)
+
+        for _key, field in self.fields.items():
+            if isinstance(field, BooleanField):
+                field.widget = UnfoldBooleanWidget()

src/unfold/contrib/import_export/templates/admin/import_export/export.html

@@ -50,15 +50,29 @@
             {% include "admin/import_export/resource_fields_list.html" with import_or_export="export" %}
         {% endif %}
 
+        {{ form.non_field_errors }}
+
         <fieldset class="border border-gray-200 mb-4 rounded-md pt-3 px-3 shadow-sm dark:border-gray-800">
-            {% if form.resource.field.widget.attrs.readonly %}
-                {% include "unfold/helpers/field_readonly.html" with title=form.resource.field.label value=form.resource.field.value %}
-                {{ form.resource.as_hidden }}
-            {% else %}
-                {% include "unfold/helpers/field.html" with field=form.resource %}
-            {% endif %}
-
-            {% include "unfold/helpers/field.html" with field=form.format %}
+            {% for field in form.visible_fields %}
+                <div {% if field.field.is_selectable_field %}class="selectable-field-export-row" resource-index="{{ field.field.resource_index }}"{% else %}class="form-row aligned"{% endif %}>
+                    {% if field.field.initial_field %}
+                        <p class="block font-medium mb-2 text-gray-900 text-sm dark:text-gray-200">
+                            {% trans "This exporter will export the following fields" %}
+                        </p>
+                    {% endif %}
+
+                    {% if field.field.widget.attrs.readonly %}
+                        {% include "unfold/helpers/field_readonly.html" with title=field.label value=field.field.value %}
+                        {{ field.as_hidden }}
+                    {% else %}
+                        {% include "unfold/helpers/field.html" with field=field %}
+                    {% endif %}
+                </div>
+            {% endfor %}
+
+            {% for field in form.hidden_fields %}
+                {{ field }}
+            {% endfor %}
         </fieldset>
 
         <button type="submit" class="bg-primary-600 border border-transparent font-medium px-3 py-2 rounded-md text-sm text-white">

src/unfold/contrib/import_export/templates/admin/import_export/import_form.html

@@ -7,20 +7,16 @@
         {% include "admin/import_export/resource_fields_list.html" with import_or_export="import" %}
 
         <fieldset class="border border-gray-200 mb-8 rounded-md pt-3 px-3 shadow-sm dark:border-gray-800">
-            {% if form.resource.field.widget.attrs.readonly %}
-                {% include "unfold/helpers/field_readonly.html" with title=form.resource.field.label value=form.resource.field.value %}
-                {{ form.resource.as_hidden }}
-            {% else %}
-                {% include "unfold/helpers/field.html" with field=form.resource %}
-            {% endif %}
-
-
-            {% include "unfold/helpers/field.html" with field=form.import_file %}
-
-            {% include "unfold/helpers/field.html" with field=form.format %}
+            {% for field in form %}
+                {% if field.field.widget.attrs.readonly %}
+                    {% include "unfold/helpers/field_readonly.html" with title=field.label value=field.field.value %}
+                    {{ field.as_hidden }}
+                {% else %}
+                    {% include "unfold/helpers/field.html" with field=field %}
+                {% endif %}
+            {% endfor %}
         </fieldset>
 
-
         <button type="submit" class="bg-primary-600 border border-transparent font-medium px-3 py-2 rounded-md text-sm text-white">
             {% translate 'Submit' %}
         </button>

src/unfold/templates/unfold/helpers/field.html

@@ -1,9 +1,23 @@
-<div class="{% if field.errors %}errors {% endif %}flex group mb-6 flex-col last:mb-4">
-    {% include "unfold/helpers/form_label.html" with field=field %}
+{% if field.field.widget.input_type == "checkbox" %}
+    <div class="{% if field.errors %}errors {% endif %}flex flex-col group mb-6 last:mb-4">
+        <div class="flex flex-row gap-2 items-center">
+            {{ field }}
 
-    {{ field }}
+            {% include "unfold/helpers/form_label.html" with field=field %}
+        </div>
 
-    {% include "unfold/helpers/form_errors.html" with errors=field.errors %}
+        {% include "unfold/helpers/form_errors.html" with errors=field.errors %}
 
-    {% include "unfold/helpers/help_text.html" with help_text=field.help_text %}
-</div>
+        {% include "unfold/helpers/help_text.html" with help_text=field.help_text %}
+    </div>
+{% else %}
+    <div class="{% if field.errors %}errors {% endif %}flex flex-col group mb-6 last:mb-4">
+        {% include "unfold/helpers/form_label.html" with field=field %}
+
+        {{ field }}
+
+        {% include "unfold/helpers/form_errors.html" with errors=field.errors %}
+
+        {% include "unfold/helpers/help_text.html" with help_text=field.help_text %}
+    </div>
+{% endif %}

src/unfold/templates/unfold/helpers/form_label.html

@@ -1,4 +1,4 @@
-<label for="{{ field.id_for_label }}" class="block font-medium mb-2 text-gray-900 text-sm dark:text-gray-200">
+<label for="{{ field.id_for_label }}" class="block text-gray-900 text-sm dark:text-gray-200{% if field.field.widget.input_type == "checkbox" %}{% else %} font-medium mb-2{% endif %}">
     {{ field.label }}
 
     {% if field.field.required %}

src/unfold/widgets.py

@@ -515,7 +515,7 @@ def __init__(
         if attrs is None:
             attrs = {}
 
-        return super().__init__(
+        super().__init__(
             {
                 **(attrs or {}),
                 "class": " ".join(CHECKBOX_CLASSES + [attrs.get("class", "")]),
@@ -528,7 +528,7 @@ class UnfoldBooleanSwitchWidget(CheckboxInput):
     def __init__(
         self, attrs: Optional[Dict[str, Any]] = None, check_test: Callable = None
     ) -> None:
-        return super().__init__(
+        super().__init__(
             attrs={"class": " ".join(SWITCH_CLASSES), **(attrs or {})}, check_test=None
         )
 
@@ -551,4 +551,4 @@ def __init__(
             "class": " ".join(["vForeignKeyRawIdAdminField"] + INPUT_CLASSES),
             **(attrs or {}),
         }
-        return super().__init__(rel, admin_site, attrs, using)
+        super().__init__(rel, admin_site, attrs, using)