Django Formalizr

Class Based Views which takes forms throught AJAX and returns JSON response. Response includes:

status of request

validation errors, if any

messages from django messages framework, if any

url for redirection or result object, in case of success

Quick start

Installation:
```
pip install -U django-formalizr
```
Add "formalizr" to your INSTALLED_APPS setting like this:
```
INSTALLED_APPS = (
    ...
    'formalizr',
)
```

Inherit your form views from formalizr.views.AjaxFormView:

from formalizr.views import AjaxFormView

class SampleFormView(AjaxFormView):
     form_class = SampleForm

Make AJAX requests to your views and process JSON responses

Views Classes

Available view classes are: AjaxFormView, AjaxCreateView and AjaxUpdateView. Their purpose must be obvious.

JSON Responses

Redirect location after successful form submission

In simplest case, when form processed without errors and messages, HTTP 200 OK is returned with application/json:

{
   "status": "redirect",
   "location": "/path/to/some/view/"
}

View's method get_success_url() is used to get the redirect location.

Object and messages after successful form submission

If _return=result parameter is included into request, then JSON representation of result is returned:

{
   "status": "success",
   "object": {"pk":1},
   "messages": [{"level": "info", "message": "Object created!"}]
}

View's method get_json_object() is used to dump result into dict, later this dict is dumped into JSON. Messages are included into response.

Error messages after failed form submission

In case of errors, HTTP 400 Bad Request is returned with application/json content:

{
    "status": "error",
    "error": "Bad Request"
    "errors": {
                  "__all__": ["Common form errors"],
                  "name": ["This field is required"],
                  "email": ["Please enter valid email address"]
              }
}

If form comes with prefix, then names of all fields will have same prefix.