Use JSON field for document ids

src-ui/src/app/components/common/input/document-link/document-link.component.spec.ts

@@ -79,6 +79,21 @@ describe('DocumentLinkComponent', () => {
     component.documentsInput$.next('foo')
   })
 
+  it('should load values correctly', () => {
+    jest.spyOn(documentService, 'getCachedMany').mockImplementation((ids) => {
+      return of(documents.filter((d) => ids.includes(d.id)))
+    })
+    component.writeValue([12, 23])
+    expect(component.value).toEqual([12, 23])
+    expect(component.selectedDocuments).toEqual([documents[1], documents[2]])
+    component.writeValue(null)
+    expect(component.value).toEqual([])
+    expect(component.selectedDocuments).toEqual([])
+    component.writeValue([])
+    expect(component.value).toEqual([])
+    expect(component.selectedDocuments).toEqual([])
+  })
+
   it('should support unselect', () => {
     const getSpy = jest.spyOn(documentService, 'getCachedMany')
     getSpy.mockImplementation((ids) => {

src-ui/src/app/components/common/input/document-link/document-link.component.ts

@@ -52,6 +52,10 @@ export class DocumentLinkComponent
   }
 
   writeValue(documentIDs: number[]): void {
+    if (!documentIDs || documentIDs.length === 0) {
+      this.selectedDocuments = []
+      super.writeValue([])
+    } else {
       this.loading = true
       this.documentsService
         .getCachedMany(documentIDs)
@@ -62,6 +66,7 @@ export class DocumentLinkComponent
           super.writeValue(documentIDs)
         })
     }
+  }
 
   private loadDocs() {
     this.foundDocuments$ = concat(

src/documents/migrations/1042_consumptiontemplate_assign_custom_fields_and_more.py

@@ -1,6 +1,5 @@
 # Generated by Django 4.2.7 on 2023-12-04 04:03
 
-import django.core.validators
 from django.db import migrations
 from django.db import models
 
@@ -24,11 +23,7 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name="customfieldinstance",
             name="value_document_ids",
-            field=models.CharField(
-                max_length=128,
-                null=True,
-                validators=[django.core.validators.int_list_validator],
-            ),
+            field=models.JSONField(null=True),
         ),
         migrations.AlterField(
             model_name="customfield",

src/documents/models.py

@@ -15,7 +15,6 @@ from django.contrib.auth.models import Group
 from django.contrib.auth.models import User
 from django.core.validators import MaxValueValidator
 from django.core.validators import MinValueValidator
-from django.core.validators import int_list_validator
 from django.db import models
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
@@ -836,11 +835,7 @@ class CustomFieldInstance(models.Model):
 
     value_monetary = models.DecimalField(null=True, decimal_places=2, max_digits=12)
 
-    value_document_ids = models.CharField(
-        validators=[int_list_validator],
-        max_length=128,
-        null=True,
-    )
+    value_document_ids = models.JSONField(null=True)
 
     class Meta:
         ordering = ("created",)

src/documents/serialisers.py

@@ -1,5 +1,4 @@
 import datetime
-import json
 import math
 import re
 import zoneinfo
@@ -460,11 +459,7 @@ class CustomFieldInstanceSerializer(serializers.ModelSerializer):
         return instance
 
     def get_value(self, obj: CustomFieldInstance):
-        return (
-            obj.value
-            if (obj.field.data_type != CustomField.FieldDataType.DOCUMENTLINK)
-            else json.loads(obj.value)
-        )
+        return obj.value
 
     def validate(self, data):
         """