> For the complete documentation index, see [llms.txt](https://lauradang.gitbook.io/notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lauradang.gitbook.io/notes/web/django/migrating-models.md).

# Migrating Models

## Go to admin.py, add code

```python
from django.contrib import admin
from mptt.admin import MPTTModelAdmin
from .models import Company

@admin.register(Company)
class CompanyAdmin(MPTTModelAdmin):
  pass

@admin.register(HotSearch)
class HotSearchAdmin(admin.ModelAdmin):
    pass
```

## Activate grantmatch-app virtual server

```bash
$ workon grantmatch-app
```

## Make migrations and migrating

```bash
$ python manage.py makemigrations
$ python manage.py migrate
```

## Rollback migration

```bash
$ python manage.py migrate your_app (timesheet eg) 0002
```

* Delete individual migration files (both of them)
* Update model 
* New make migration

## When `make migrations` work but not `migrate`

```bash
$ python3 manage.py migrate jobs 0003 --fake
$ python3 manage.py migrate jobs
```


---

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