An implementation of django forms using mongoengine.
Project description
django mongodbforms
This is an implementation of django’s model forms for mongoengine documents.
Requirements
Django >= 1.3
mongoengine >= 0.6
Usage
mongodbforms supports forms for normal documents and embedded documents.
Normal documents
To use mongodbforms with normal documents replace djangos forms with mongodbform forms.
```python from mongodbforms import DocumentForm
class BlogForm(DocumentForm) … ```
Embedded documents
For embedded documents use EmbeddedDocumentForm. The Meta-object of the form has to be provided with an embedded field name. The embedded object is appended to this. The form constructor takes a couple of additional arguments: The document the embedded document gets added to and an optional position argument.
If no position is provided the form adds a new embedded document to the list if the form is saved. To edit an embedded document stored in a list field the position argument is required. If you provide a position and no instance to the form the instance is automatically loaded using the position argument.
If the embedded field is a plain embedded field the current object is simply overwritten.
````python # forms.py from mongodbforms import EmbeddedDocumentForm
class MessageForm(EmbeddedDocumentForm): class Meta: document = Message embedded_field_name = ‘messages’
fields = ['subject', 'sender', 'message',]
views.py
create a new embedded object
form = MessageForm(parent_document=some_document, …) # edit the 4th embedded object form = MessageForm(parent_document=some_document, position=3, …) ```
Documentation
In theory the documentation Django’s modelform documentation should be all you need (except for one exception; read on). If you find a discrepancy between something that mongodbforms does and what Django’s documentation says, you have most likely found a bug. Please report it.
Form field generation
Because the fields on mongoengine documents have no notion of form fields mongodbform uses a generator class to generate the form field for a db field, which is not explicitly set.
To use your own field generator you can either set a generator for your whole project using MONGODBFORMS_FIELDGENERATOR in settings.py or you can use the formfield_generator option on the form’s Meta class.
The default generator is defined in mongodbforms/fieldgenerator.py and should make it easy to override form fields and widgets. If you set a generator on the document form you can also pass two dicts field_overrides and widget_overrides to __init__. For a list of valid keys have a look at MongoFormFieldGenerator.
````python # settings.py
set the fieldgeneretor for the whole application
MONGODBFORMS_FIELDGENERATOR = ‘myproject.fieldgenerator.GeneratorClass’
generator.py
from mongodbforms.fieldgenerator import MongoFormFieldGenerator
class MyFieldGenerator(MongoFormFieldGenerator): …
forms.py
from mongodbforms import DocumentForm
from generator import MyFieldGenerator
class MessageForm(DocumentForm): class Meta: formfield_generator = MyFieldGenerator ```
Project details
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
File details
Details for the file mongodbforms-0.2.tar.gz
.
File metadata
- Download URL: mongodbforms-0.2.tar.gz
- Upload date:
- Size: 23.2 kB
- Tags: Source
- Uploaded using Trusted Publishing? No
File hashes
Algorithm | Hash digest | |
---|---|---|
SHA256 | b971dd1a03c19182b7791f84f6e1fb225d93e4fc480bce1b4223ae8b8487b628 |
|
MD5 | c743999b8afc035dfccf2d67d10fa868 |
|
BLAKE2b-256 | c1f8f3f3426249931653b89fce38873b39bf2bf03eedfb31d65f8a676b5011cc |