change request models

app/entities/enums.py

@@ -30,6 +30,16 @@ class GenerateCode(Enum):
     DEPARTMENT = 'DEPARTMENT'
     USER = 'USER'
     NOTIFICATION = 'NOTIF'
+    TEMPLATE = 'TMP'
+    TMP_APPROVER = 'TMPAPR'
+    TMP_STAKE = 'TMPSTK'
+    TMP_ATTACH = 'TMPATCH'
+    TMP_DETAIL = 'TMPDETAIL'
+    FORM = 'FRM'
+    FORM_APPROVER = 'FRMAPR'
+    FORM_STAKE = 'FRMSTK'
+    FORM_ATTACH = 'FRMATCH'
+    FORM_DETAIL = 'FRMDETAIL'
 
 
 '''

app/entities/migrations/0004_auto_20190904_1608.py

+# Generated by Django 2.2 on 2019-09-04 16:08
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('entities', '0003_auto_20190903_1725'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ChangeRequestFormHeader',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('requested_to_template_name', models.CharField(max_length=255)),
+                ('requested_to_template_id', models.CharField(max_length=255)),
+                ('requested_to_objective', models.CharField(blank=True, max_length=255, null=True)),
+                ('requested_to_target_date', models.DateTimeField(blank=True, null=True)),
+                ('requested_to_priority', models.CharField(max_length=255)),
+                ('description', models.CharField(blank=True, max_length=255, null=True)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('form_code', models.CharField(max_length=255, unique=True)),
+                ('cancel_date', models.DateTimeField(blank=True, null=True)),
+                ('status', models.CharField(max_length=50)),
+                ('company_desc', models.CharField(blank=True, max_length=255, null=True)),
+                ('department_desc', models.CharField(blank=True, max_length=255, null=True)),
+                ('requested_desc', models.CharField(blank=True, max_length=255, null=True)),
+                ('old_form_code', models.CharField(blank=True, max_length=255, null=True)),
+                ('requested_by_department', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, related_name='requested_by_department', to='entities.Department', to_field='code')),
+                ('requested_by_user', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, related_name='requested_by_user', to=settings.AUTH_USER_MODEL, to_field='code')),
+                ('requested_to_company', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.Company', to_field='code')),
+                ('requested_to_department', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.Department', to_field='code')),
+                ('requested_to_user', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to=settings.AUTH_USER_MODEL, to_field='code')),
+            ],
+            options={
+                'db_table': 'change_request_form_headers',
+            },
+        ),
+        migrations.CreateModel(
+            name='ChangeRequestTemplateHeader',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('requested_to_template_name', models.CharField(max_length=255)),
+                ('requested_to_template_id', models.CharField(max_length=255)),
+                ('requested_to_objective', models.CharField(blank=True, max_length=255, null=True)),
+                ('requested_to_target_date', models.DateTimeField(blank=True, null=True)),
+                ('requested_to_priority', models.CharField(max_length=255)),
+                ('description', models.CharField(blank=True, max_length=255, null=True)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('template_no', models.CharField(max_length=255, unique=True)),
+                ('created_by_department', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, related_name='created_by_department', to='entities.Department', to_field='code')),
+                ('created_by_user', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, related_name='created_by_user', to=settings.AUTH_USER_MODEL, to_field='code')),
+                ('requested_to_company', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.Company', to_field='code')),
+                ('requested_to_department', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.Department', to_field='code')),
+                ('requested_to_user', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to=settings.AUTH_USER_MODEL, to_field='code')),
+            ],
+            options={
+                'db_table': 'change_request_template_headers',
+            },
+        ),
+        migrations.CreateModel(
+            name='ChangeRequestTemplateStakeHolders',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('date_added', models.DateTimeField(blank=True, null=True)),
+                ('delegation', models.CharField(blank=True, max_length=255, null=True)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('code', models.CharField(max_length=255, unique=True)),
+                ('template_no', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.ChangeRequestTemplateHeader', to_field='template_no')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to=settings.AUTH_USER_MODEL, to_field='code')),
+            ],
+            options={
+                'db_table': 'change_request_template_stakeholders',
+            },
+        ),
+        migrations.CreateModel(
+            name='ChangeRequestTemplateDetails',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('field_idx', models.CharField(max_length=255)),
+                ('field_ref', models.CharField(max_length=255)),
+                ('field_val', models.CharField(max_length=255)),
+                ('field_props', models.CharField(max_length=255)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('code', models.CharField(max_length=255, unique=True)),
+                ('template_no', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.ChangeRequestTemplateHeader', to_field='template_no')),
+            ],
+            options={
+                'db_table': 'change_request_template_details',
+            },
+        ),
+        migrations.CreateModel(
+            name='ChangeRequestTemplateAttachments',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('upload_no', models.CharField(blank=True, max_length=255, null=True)),
+                ('attachment_type', models.CharField(max_length=255)),
+                ('attachment_name', models.CharField(max_length=255)),
+                ('file_name', models.CharField(blank=True, max_length=255, null=True)),
+                ('description', models.CharField(blank=True, max_length=255, null=True)),
+                ('file_upload', models.CharField(blank=True, max_length=255, null=True)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('attachment_no', models.CharField(max_length=255, unique=True)),
+                ('template_no', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.ChangeRequestTemplateHeader', to_field='template_no')),
+                ('uploaded_by', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to=settings.AUTH_USER_MODEL, to_field='code')),
+            ],
+            options={
+                'db_table': 'change_request_template_attachments',
+            },
+        ),
+        migrations.CreateModel(
+            name='ChangeRequestTemplateApprovers',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('level', models.CharField(blank=True, max_length=50, null=True)),
+                ('delegation', models.CharField(max_length=50)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('code', models.CharField(max_length=255, unique=True)),
+                ('template_no', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.ChangeRequestTemplateHeader', to_field='template_no')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to=settings.AUTH_USER_MODEL, to_field='code')),
+            ],
+            options={
+                'db_table': 'change_request_template_approvers',
+            },
+        ),
+        migrations.CreateModel(
+            name='ChangeRequestFormStakeHolders',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('date_added', models.DateTimeField(blank=True, null=True)),
+                ('delegation', models.CharField(blank=True, max_length=255, null=True)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('code', models.CharField(max_length=255, unique=True)),
+                ('form_code', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.ChangeRequestFormHeader', to_field='form_code')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to=settings.AUTH_USER_MODEL, to_field='code')),
+            ],
+            options={
+                'db_table': 'change_request_form_stakeholders',
+            },
+        ),
+        migrations.AddField(
+            model_name='changerequestformheader',
+            name='template_no',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.ChangeRequestTemplateHeader', to_field='template_no'),
+        ),
+        migrations.CreateModel(
+            name='ChangeRequestFormDetails',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('field_idx', models.CharField(max_length=255)),
+                ('field_ref', models.CharField(max_length=255)),
+                ('field_val', models.CharField(max_length=255)),
+                ('field_props', models.CharField(max_length=255)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('code', models.CharField(max_length=255, unique=True)),
+                ('form_code', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.ChangeRequestFormHeader', to_field='form_code')),
+            ],
+            options={
+                'db_table': 'change_request_form_details',
+            },
+        ),
+        migrations.CreateModel(
+            name='ChangeRequestFormAttachments',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('upload_no', models.CharField(blank=True, max_length=255, null=True)),
+                ('attachment_type', models.CharField(max_length=255)),
+                ('attachment_name', models.CharField(max_length=255)),
+                ('file_name', models.CharField(blank=True, max_length=255, null=True)),
+                ('description', models.CharField(blank=True, max_length=255, null=True)),
+                ('file_upload', models.CharField(blank=True, max_length=255, null=True)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('code', models.CharField(max_length=255, unique=True)),
+                ('form_code', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.ChangeRequestFormHeader', to_field='form_code')),
+                ('uploaded_by', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to=settings.AUTH_USER_MODEL, to_field='code')),
+            ],
+            options={
+                'db_table': 'change_request_form_attachments',
+            },
+        ),
+        migrations.CreateModel(
+            name='ChangeRequestFormApprovers',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('level', models.CharField(blank=True, max_length=50, null=True)),
+                ('delegation', models.CharField(max_length=50)),
+                ('created', models.DateTimeField(blank=True, null=True)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('code', models.CharField(max_length=255, unique=True)),
+                ('remarks', models.CharField(blank=True, max_length=255, null=True)),
+                ('form_code', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to='entities.ChangeRequestFormHeader', to_field='form_code')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, to=settings.AUTH_USER_MODEL, to_field='code')),
+            ],
+            options={
+                'db_table': 'change_request_form_approvers',
+            },
+        ),
+    ]

app/entities/migrations/0005_auto_20190904_1635.py

+# Generated by Django 2.2 on 2019-09-04 16:35
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('entities', '0004_auto_20190904_1608'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='changerequesttemplateapprovers',
+            name='action',
+            field=models.CharField(blank=True, max_length=50, null=True),
+        ),
+        migrations.AddField(
+            model_name='changerequesttemplateapprovers',
+            name='date_sent',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='module',
+            name='component',
+            field=models.CharField(blank=True, max_length=255, null=True),
+        ),
+    ]

app/entities/models.py

@@ -59,6 +59,7 @@ class Module(AuditClass):
     )
     parent = models.IntegerField()
     sort_id = models.IntegerField()
+    component = models.CharField(max_length=255, null=True, blank=True)
 
     class Meta:
         db_table = 'modules'
@@ -359,4 +360,279 @@ class Notification(models.Model):
     def save(self, *args, **kwargs):
         super(Notification, self).save(*args, **kwargs)
         code = number_generator(enums.GenerateCode.NOTIFICATION.value, self.id)
-        Notification.objects.filter(id=self.id).update(code=code)
+        Notification.objects.filter(id=self.id).update(code=code)
\ No newline at end of file
+
+
+"""
+**********************
+*** CHANGE REQUEST TABLES ***
+**********************
+"""
+
+class BaseHeader(models.Model):
+    # all user mean id_number on database
+    requested_to_company = models.ForeignKey(Company, on_delete=models.DO_NOTHING,
+                                                      to_field='code')
+    requested_to_department = models.ForeignKey(Department, on_delete=models.DO_NOTHING,
+                                                            to_field='code')
+    requested_to_user = models.ForeignKey(User, on_delete=models.DO_NOTHING,
+                                                to_field='code')
+    requested_to_template_name = models.CharField(max_length=255)
+    requested_to_template_id = models.CharField(max_length=255)
+    requested_to_objective = models.CharField(max_length=255, blank=True, null=True)
+    requested_to_target_date = models.DateTimeField(blank=True, null=True)
+    requested_to_priority = models.CharField(max_length=255)
+    description = models.CharField(max_length=255, blank=True, null=True)
+    created = models.DateTimeField(blank=True, null=True)
+    deleted_at = models.DateTimeField(blank=True, null=True)
+
+    class Meta:
+        abstract = True
+
+
+class BaseApprover(models.Model):
+    level = models.CharField(max_length=50, blank=True, null=True)
+    user = models.ForeignKey(User, on_delete=models.DO_NOTHING,
+                                   to_field='code')
+    delegation = models.CharField(max_length=50)
+    created = models.DateTimeField(blank=True, null=True)
+    deleted_at = models.DateTimeField(blank=True, null=True)
+
+    class Meta:
+        abstract = True
+
+
+class BaseStakeholder(models.Model):
+    user = models.ForeignKey(User, on_delete=models.DO_NOTHING,
+                                   to_field='code')
+    date_added = models.DateTimeField(blank=True, null=True)
+    delegation = models.CharField(max_length=255, blank=True, null=True)
+    created = models.DateTimeField(blank=True, null=True)
+    deleted_at = models.DateTimeField(blank=True, null=True)
+
+    class Meta:
+        abstract = True
+
+
+class BaseAttachment(models.Model):
+    upload_no = models.CharField(max_length=255, blank=True, null=True)
+    attachment_type = models.CharField(max_length=255)
+    attachment_name = models.CharField(max_length=255)
+
+    file_name = models.CharField(max_length=255, blank=True, null=True)
+    description = models.CharField(max_length=255, blank=True, null=True)
+    uploaded_by = models.ForeignKey(User, on_delete=models.DO_NOTHING,
+                                          to_field='code')
+    file_upload = models.CharField(max_length=255, blank=True, null=True)
+    
+    created = models.DateTimeField(blank=True, null=True)
+    deleted_at = models.DateTimeField(blank=True, null=True)
+
+    class Meta:
+        abstract = True
+
+
+class BaseDetails(models.Model):
+    field_idx = models.CharField(max_length=255)
+    field_ref = models.CharField(max_length=255)
+    field_val = models.CharField(max_length=255)
+    field_props = models.CharField(max_length=255)
+
+    created = models.DateTimeField(blank=True, null=True)
+    deleted_at = models.DateTimeField(blank=True, null=True)
+
+    class Meta:
+        abstract = True
+
+
+'''
+*********
+TEMPLATES
+*********
+'''
+
+class ChangeRequestTemplateHeader(BaseHeader):
+    template_no = models.CharField(unique=True, max_length=255)
+    created_by_user = models.ForeignKey(User, on_delete=models.DO_NOTHING,
+                                              to_field='code',
+                                              related_name='created_by_user')
+
+    created_by_department = models.ForeignKey(Department, on_delete=models.DO_NOTHING,
+                                                          to_field='code',
+                                                          related_name='created_by_department')
+
+    class Meta:
+        db_table = 'change_request_template_headers'
+
+    def save(self, *args, **kwargs):
+        super(ChangeRequestTemplateHeader, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.TEMPLATE.value, self.id)
+        ChangeRequestTemplateHeader.objects.filter(id=self.id).update(template_no=code)
+
+    def delete(self):
+        self.deleted_at = datetime.utcnow
+        self.save()
+
+
+class ChangeRequestTemplateApprovers(BaseApprover):
+    code = models.CharField(unique=True, max_length=255)  # primary key
+    template_no = models.ForeignKey(ChangeRequestTemplateHeader, on_delete=models.DO_NOTHING,
+                                                                 to_field='template_no')
+    date_sent = models.DateTimeField(blank=True, null=True)
+    action = models.CharField(max_length=50, blank=True, null=True)
+
+    class Meta:
+        db_table = 'change_request_template_approvers'
+
+    def save(self, *args, **kwargs):
+        super(ChangeRequestTemplateApprovers, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.TMP_APPROVER.value, self.id)
+        ChangeRequestTemplateApprovers.objects.filter(id=self.id).update(code=code)
+
+    pass
+
+
+class ChangeRequestTemplateStakeHolders(BaseStakeholder):
+    code = models.CharField(unique=True, max_length=255)  # primary key
+    template_no = models.ForeignKey(ChangeRequestTemplateHeader, on_delete=models.DO_NOTHING,
+                                                                 to_field='template_no')
+  
+    class Meta:
+        db_table = 'change_request_template_stakeholders'
+
+    def save(self, *args, **kwargs):
+        super(ChangeRequestTemplateStakeHolders, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.TMP_STAKE.value, self.id)
+        ChangeRequestTemplateStakeHolders.objects.filter(id=self.id).update(code=code)
+
+    pass
+
+
+class ChangeRequestTemplateAttachments(BaseAttachment):
+    attachment_no = models.CharField(max_length=255, unique=True)
+    template_no = models.ForeignKey(ChangeRequestTemplateHeader, on_delete=models.DO_NOTHING,
+                                                                 to_field='template_no')
+
+    class Meta:
+        db_table = 'change_request_template_attachments'
+    
+    def save(self, *args, **kwargs):
+        super(ChangeRequestTemplateAttachments, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.TMP_ATTACH.value, self.id)
+        ChangeRequestTemplateAttachments.objects.filter(id=self.id).update(attachment_no=code)
+
+    pass
+
+
+class ChangeRequestTemplateDetails(BaseDetails):
+    code = models.CharField(max_length=255, unique=True)
+    template_no = models.ForeignKey(ChangeRequestTemplateHeader, on_delete=models.DO_NOTHING,
+                                                                 to_field='template_no')
+
+    class Meta:
+        db_table = 'change_request_template_details'
+
+    def save(self, *args, **kwargs):
+        super(ChangeRequestTemplateDetails, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.TMP_DETAIL.value, self.id)
+        ChangeRequestTemplateDetails.objects.filter(id=self.id).update(code=code)
+
+    pass
+
+
+'''
+*****
+FORMS
+*****
+'''
+
+class ChangeRequestFormHeader(BaseHeader):
+    form_code = models.CharField(max_length=255, unique=True)
+    requested_by_user = models.ForeignKey(User, on_delete=models.DO_NOTHING,
+                                                to_field='code',
+                                                related_name='requested_by_user')
+    cancel_date = models.DateTimeField(null=True, blank=True)
+    requested_by_department = models.ForeignKey(Department, on_delete=models.DO_NOTHING,
+                                                            to_field='code',
+                                                            related_name='requested_by_department')
+    template_no = models.ForeignKey(ChangeRequestTemplateHeader, on_delete=models.DO_NOTHING,
+                                                                 to_field='template_no')
+    status = models.CharField(max_length=50)
+    
+    company_desc = models.CharField(max_length=255, null=True, blank=True)
+    department_desc = models.CharField(max_length=255, null=True, blank=True)
+    requested_desc = models.CharField(max_length=255, null=True, blank=True)
+    old_form_code = models.CharField(max_length=255, null=True, blank=True)
+
+    class Meta:
+        db_table = 'change_request_form_headers'
+    
+    def save(self, *args, **kwargs):
+        super(ChangeRequestFormHeader, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.FORM.value, self.id)
+        ChangeRequestFormHeader.objects.filter(id=self.id).update(form_code=code)
+
+
+class ChangeRequestFormApprovers(BaseApprover):
+    code = models.CharField(unique=True, max_length=255)  # primary key
+    form_code = models.ForeignKey(ChangeRequestFormHeader, on_delete=models.DO_NOTHING,
+                                                           to_field='form_code')
+    remarks = models.CharField(max_length=255, null=True, blank=True)
+
+    class Meta:
+        db_table = 'change_request_form_approvers'
+
+    def save(self, *args, **kwargs):
+        super(ChangeRequestFormApprovers, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.FORM_APPROVER.value, self.id)
+        ChangeRequestFormApprovers.objects.filter(id=self.id).update(code=code)
+
+    pass
+
+
+class ChangeRequestFormDetails(BaseDetails):
+    code = models.CharField(unique=True, max_length=255)  # primary key
+    form_code = models.ForeignKey(ChangeRequestFormHeader, on_delete=models.DO_NOTHING,
+                                                        to_field='form_code')
+
+    class Meta:
+        db_table = 'change_request_form_details'
+    
+    def save(self, *args, **kwargs):
+        super(ChangeRequestFormDetails, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.FORM_DETAIL.value, self.id)
+        ChangeRequestFormDetails.objects.filter(id=self.id).update(code=code)
+
+    pass
+
+
+class ChangeRequestFormStakeHolders(BaseStakeholder):
+    code = models.CharField(unique=True, max_length=255)  # primary key
+    form_code = models.ForeignKey(ChangeRequestFormHeader, on_delete=models.DO_NOTHING,
+                                                           to_field='form_code')
+
+    class Meta:
+        db_table = 'change_request_form_stakeholders'
+
+    def save(self, *args, **kwargs):
+        super(ChangeRequestFormStakeHolders, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.FORM_STAKE.value, self.id)
+        ChangeRequestFormStakeHolders.objects.filter(id=self.id).update(code=code)
+
+    pass
+
+
+class ChangeRequestFormAttachments(BaseAttachment):
+    code = models.CharField(unique=True, max_length=255)  # primary key
+    form_code = models.ForeignKey(ChangeRequestFormHeader, on_delete=models.DO_NOTHING,
+                                                           to_field='form_code')
+
+    class Meta:
+        db_table = 'change_request_form_attachments'
+
+    def save(self, *args, **kwargs):
+        super(ChangeRequestFormAttachments, self).save(*args, **kwargs)
+        code = number_generator(enums.GenerateCode.FORM_ATTACH.value, self.id)
+        ChangeRequestFormAttachments.objects.filter(id=self.id).update(code=code)
+    
+    pass