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fw:mongoengine
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| Ambos lados, revisión anterior Revisión previa Próxima revisión | Revisión previa | ||
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fw:mongoengine [2014/05/20 11:34] alfred [Storing an object inside another] |
fw:mongoengine [2020/05/09 09:25] (actual) |
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| Línea 47: | Línea 47: | ||
| * ''date_modified = DateTimeField(default=datetime.datetime.now)'' | * ''date_modified = DateTimeField(default=datetime.datetime.now)'' | ||
| More about this subject in: [[http://docs.mongoengine.org/guide/defining-documents.html#fields]] | More about this subject in: [[http://docs.mongoengine.org/guide/defining-documents.html#fields]] | ||
| + | ==== Storing an object ==== | ||
| + | <code python> | ||
| + | Comment.objects.create(text='Me gusta!') | ||
| + | </code> | ||
| ==== Storing an object inside another ==== | ==== Storing an object inside another ==== | ||
| <code python> | <code python> | ||
| Línea 59: | Línea 63: | ||
| comments = ListField(EmbeddedDocumentField(Comment)) | comments = ListField(EmbeddedDocumentField(Comment)) | ||
| </code> | </code> | ||
| - | We also could use ''GenericReferenceField'' to referenci any kind of document: | + | We also could use ''GenericReferenceField'' to reference any kind of document: |
| <code python> | <code python> | ||
| class Bookmark(Document): | class Bookmark(Document): | ||
| Línea 91: | Línea 95: | ||
| page.tags = ['mongodb', 'mongoengine'] | page.tags = ['mongodb', 'mongoengine'] | ||
| page.save() | page.save() | ||
| + | </code> | ||
| + | ==== Defining constraints ==== | ||
| + | We can specify field uniqueness with ''unique=True'' and multi-fielduniqueness with ''unique_with'' (for a field name, or a list, or a tuple): | ||
| + | <code python> | ||
| + | class User(Document): | ||
| + | username = StringField(unique=True) | ||
| + | first_name = StringField() | ||
| + | last_name = StringField(unique_with='first_name') | ||
| </code> | </code> | ||
| ===== Editing Data ===== | ===== Editing Data ===== | ||
| Línea 133: | Línea 145: | ||
| for post in Post.objects(tags='mongodb'): | for post in Post.objects(tags='mongodb'): | ||
| print post.title | print post.title | ||
| + | </code> | ||
| + | |||
| + | ===== Others ===== | ||
| + | |||
| + | ==== Django support ==== | ||
| + | === Connecting === | ||
| + | You only need to call ''connect()'' somewhere in the settings module. | ||
| + | |||
| + | If you were not using another Database backend you may need to add a dummy database: | ||
| + | <code python> | ||
| + | DATABASES = { | ||
| + | 'default': { | ||
| + | 'ENGINE': 'django.db.backends.dummy' | ||
| + | } | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | === Users === | ||
| + | Django authentication classes are included as Document classes so they are compatible. To enable them you should add the following to your settings.py file: | ||
| + | <code python> | ||
| + | AUTHENTICATION_BACKENDS = ( | ||
| + | 'mongoengine.django.auth.MongoEngineBackend', | ||
| + | ) | ||
| + | </code> | ||
| + | Remember to call ''set_password()'' method in ''User'' class when assign a password value: | ||
| + | <code python> | ||
| + | instance.set_password(attrs.get('password', instance.password)) | ||
| </code> | </code> | ||
fw/mongoengine.1400585669.txt.gz · Última modificación: 2020/05/09 09:24 (editor externo)
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