feat: add meta-field to Template

Closes #439

document_merge_service/api/factories.py

@@ -10,6 +10,7 @@ class TemplateFactory(DjangoModelFactory):
     engine = Faker("word", ext_word_list=models.Template.ENGINE_CHOICES_LIST)
     template = None
     group = None
+    meta = {}
 
     class Meta:
         model = models.Template

document_merge_service/api/migrations/0003_template_meta.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.9 on 2021-11-01 12:34
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("api", "0002_template_group"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="template",
+            name="meta",
+            field=models.JSONField(default=dict),
+        ),
+    ]

document_merge_service/api/models.py

@@ -21,3 +21,4 @@ class Template(models.Model):
     template = models.FileField(max_length=1024)
     engine = models.CharField(max_length=20, choices=ENGINE_CHOICES_TUPLE)
     group = models.CharField(max_length=255, db_index=True, blank=True, null=True)
+    meta = models.JSONField(default=dict)

document_merge_service/api/serializers.py

@@ -118,6 +118,7 @@ class Meta:
             "sample_data",
             "files",
             "disable_template_validation",
+            "meta",
         )