Enhancement: long text custom field (#10846)

---------

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

src/documents/filters.py

@@ -230,6 +230,7 @@ class CustomFieldsFilter(Filter):
                 | qs.filter(custom_fields__value_monetary__icontains=value)
                 | qs.filter(custom_fields__value_document_ids__icontains=value)
                 | qs.filter(custom_fields__value_select__in=option_ids)
+                | qs.filter(custom_fields__value_long_text__icontains=value)
             )
         else:
             return qs
@@ -314,6 +315,7 @@ class CustomFieldQueryParser:
         CustomField.FieldDataType.MONETARY: ("basic", "string", "arithmetic"),
         CustomField.FieldDataType.DOCUMENTLINK: ("basic", "containment"),
         CustomField.FieldDataType.SELECT: ("basic",),
+        CustomField.FieldDataType.LONG_TEXT: ("basic", "string"),
     }
 
     DATE_COMPONENTS = [
@@ -845,7 +847,10 @@ class DocumentsOrderingFilter(OrderingFilter):
 
             annotation = None
             match field.data_type:
-                case CustomField.FieldDataType.STRING:
+                case (
+                    CustomField.FieldDataType.STRING
+                    | CustomField.FieldDataType.LONG_TEXT
+                ):
                     annotation = Subquery(
                         CustomFieldInstance.objects.filter(
                             document_id=OuterRef("id"),

src/documents/migrations/1070_customfieldinstance_value_long_text_and_more.py

@@ -0,0 +1,39 @@
+# Generated by Django 5.2.6 on 2025-09-13 17:11
+
+from django.db import migrations
+from django.db import models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("documents", "1069_workflowtrigger_filter_has_storage_path_and_more"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="customfieldinstance",
+            name="value_long_text",
+            field=models.TextField(null=True),
+        ),
+        migrations.AlterField(
+            model_name="customfield",
+            name="data_type",
+            field=models.CharField(
+                choices=[
+                    ("string", "String"),
+                    ("url", "URL"),
+                    ("date", "Date"),
+                    ("boolean", "Boolean"),
+                    ("integer", "Integer"),
+                    ("float", "Float"),
+                    ("monetary", "Monetary"),
+                    ("documentlink", "Document Link"),
+                    ("select", "Select"),
+                    ("longtext", "Long Text"),
+                ],
+                editable=False,
+                max_length=50,
+                verbose_name="data type",
+            ),
+        ),
+    ]

src/documents/models.py

@@ -759,6 +759,7 @@ class CustomField(models.Model):
         MONETARY = ("monetary", _("Monetary"))
         DOCUMENTLINK = ("documentlink", _("Document Link"))
         SELECT = ("select", _("Select"))
+        LONG_TEXT = ("longtext", _("Long Text"))
 
     created = models.DateTimeField(
         _("created"),
@@ -816,6 +817,7 @@ class CustomFieldInstance(SoftDeleteModel):
         CustomField.FieldDataType.MONETARY: "value_monetary",
         CustomField.FieldDataType.DOCUMENTLINK: "value_document_ids",
         CustomField.FieldDataType.SELECT: "value_select",
+        CustomField.FieldDataType.LONG_TEXT: "value_long_text",
     }
 
     created = models.DateTimeField(
@@ -883,6 +885,8 @@ class CustomFieldInstance(SoftDeleteModel):
 
     value_select = models.CharField(null=True, max_length=16)
 
+    value_long_text = models.TextField(null=True)
+
     class Meta:
         ordering = ("created",)
         verbose_name = _("custom field instance")

src/documents/templating/filepath.py

@@ -202,6 +202,7 @@ def get_custom_fields_context(
             CustomField.FieldDataType.MONETARY,
             CustomField.FieldDataType.STRING,
             CustomField.FieldDataType.URL,
+            CustomField.FieldDataType.LONG_TEXT,
         }:
             value = pathvalidate.sanitize_filename(
                 field_instance.value,