fix: convert CharFields to TextFields for FeatureImport / FeatureExpo…

…rt models (#3720)

api/features/import_export/migrations/0004_convert_data_fields_to_text_field.py

@@ -0,0 +1,30 @@
+# Generated by Django 3.2.25 on 2024-04-04 17:07
+
+from django.db import migrations, models
+
+from features.import_export.constants import (
+    MAX_FEATURE_EXPORT_SIZE,
+    MAX_FEATURE_IMPORT_SIZE,
+)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("features_import_export", "0003_flagsmithonflagsmithfeatureexport"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="featureexport",
+            name="data",
+            field=models.TextField(
+                blank=True, max_length=MAX_FEATURE_EXPORT_SIZE, null=True
+            ),
+        ),
+        migrations.AlterField(
+            model_name="featureimport",
+            name="data",
+            field=models.TextField(max_length=MAX_FEATURE_IMPORT_SIZE),
+        ),
+    ]

api/features/import_export/models.py

@@ -36,7 +36,7 @@ class FeatureExport(models.Model):
 
     # This is a JSON string of data used for file download
     # once the task has completed assembly. It is null on upload.
-    data = models.CharField(
+    data = models.TextField(
         max_length=MAX_FEATURE_EXPORT_SIZE,
         blank=True,
         null=True,
@@ -74,7 +74,7 @@ class FeatureImport(models.Model):
     )
 
     # This is a JSON string of data generated by the export.
-    data = models.CharField(max_length=MAX_FEATURE_IMPORT_SIZE)
+    data = models.TextField(max_length=MAX_FEATURE_IMPORT_SIZE)
     created_at = models.DateTimeField(auto_now_add=True)