Package repository: https://github.com/qvantel/jsonapi-client
This Python (3.6+) library provides easy-to-use, pythonic, ORM-like access to JSON API ( http://jsonapi.org )
- Optional asyncio implementation
- Optional model schema definition and validation (=> easy reads even without schema)
- Resource caching within session
From Pypi:
pip install jsonapi-client
Or from sources:
./setup.py install
fromjsonapi_clientimportSession, Filter, ResourceTuples=Session('http://localhost:8080/')
# To start session in async modes=Session('http://localhost:8080/', enable_async=True)
# You can also pass extra arguments that are passed directly to requests or aiohttp methods,# such as authentication objects=Session('http://localhost:8080/',
request_kwargs=dict(auth=HTTPBasicAuth('user', 'password'))
# You can also use Session as a context manager. Changes are committed in the end# and session is closed.withSession(...) ass:
yourcode# Or with enable_async=TrueasyncwithSession(..., enable_async=True):
yourcode# If you are not using context manager, you need to close session manuallys.close()
# Again, don't forget to await in the AsyncIO modeawaits.close()
# Fetching documentsdocuments=s.get('resource_type')
# Or if you want only 1, thendocuments=s.get('resource_type', 'id_of_document')
# AsyncIO the same but remember to await:documents=awaits.get('resource_type')# You need first to specify your filter instance.# - filtering with two criteria (and)filter=Filter(attribute='something', attribute2='something_else')
# - filtering some-dict.some-attr == 'something'filter=Filter(some_dict__some_attr='something'))
# Same thing goes for including.# - including two fieldsinclude=Inclusion('related_field', 'other_related_field')
# Custom syntax for request parameters.# If you have different URL schema for filtering or other GET parameters,# you can implement your own Modifier class (derive it from Modifier and# reimplement appended_query).modifier=Modifier('filter[post]=1&filter[author]=2')
# All above classes subclass Modifier and can be added to concatenate# parametersmodifier_sum=filter+include+modifier# Now fetch your documentfiltered=s.get('resource_type', modifier_sum) # AsyncIO with await# To access resources included in document:r1=document.resources[0] # first ResourceObject of document.r2=document.resource# if there is only 1 resource we can use this# Pagination links can be accessed via Document object.next_doc=document.links.next.fetch()
# AsyncIOnext_doc=awaitdocument.links.next.fetch()
# Iteration through results (uses pagination):forrins.iterate('resource_type'):
print(r)
# AsyncIO:asyncforrins.iterate('resource_type'):
print(r)# - attribute accessattr1=r1.some_attrnested_attr=r1.some_dict.some_attr# Attributes can always also be accessed via __getitem__:nested_attr=r1['some-dict']['some-attr']
# If there is namespace collision, you can also access attributes via .fields proxy# (both attributes and relationships)attr2=r1.fields.some_attr# - relationship access.# * Sync, this gives directly ResourceObjectrel=r1.some_relationattr3=r1.some_relation.some_attr# Relationship attribute can be accessed directly# * AsyncIO, this gives Relationship object instead because we anyway need to# call asynchronous fetch function.rel=r1.some_relation# To access ResourceObject you need to first fetch contentawaitr1.some_relation.fetch()
# and then you can access associated resourceobjectres=r1.some_relation.resourceattr3=res.some_attr# Attribute access through ResourceObject# If you need to access relatinoship object itself (with sync API), you can do it via# .relationships proxy. For example, if you are interested in links or metadata# provided within relationship, or intend to manipulate relationship.rel_obj=r1.relationships.relation_name# Updating / patching existing resourcesr1.some_attr='something else'# Patching element in nested jsonr1.some_dict.some_dict.some_attr='something else'# change relationships, to-many. Accepts also iterable of ResourceObjects/# ResourceIdentifiers/ResourceTuplesr1.comments= ['1', '2']
# or if resource type is not known or can have multiple types of resourcesr1.comments_or_people= [ResourceTuple('1', 'comments'), ResourceTuple('2', 'people')]
# or if you want to add some resources you canr1.comments_or_people+= [ResourceTuple('1', 'people')]
r1.commit()
# change to-one relationshipsr1.author='3'# accepts also ResourceObjects/ResourceIdentifiers/ResourceTuple# or resource type is not known (via schema etc.)r1.author=ResourceTuple('3', 'people')
# Committing changes (PATCH request)r1.commit(meta={'some_meta': 'data'}) # Resource committing supports optional meta data# AsyncIOawaitr1.commit(meta={'some_meta': 'data'})# Creating new resources. Schema must be given. Accepts dictionary of schema models# (key is model name and value is schema as json-schema.org).models_as_jsonschema= {
'articles': {'properties': {
'title': {'type': 'string'},
'author': {'relation': 'to-one', 'resource': ['people']},
'comments': {'relation': 'to-many', 'resource': ['comments']},
}},
'people': {'properties': {
'first-name': {'type': 'string'},
'last-name': {'type': 'string'},
'twitter': {'type': ['null', 'string']},
}},
'comments': {'properties': {
'body': {'type': 'string'},
'author': {'relation': 'to-one', 'resource': ['people']}
}}
}
# If you type schema by hand, it could be more convenient to type it as yml in a file# insteads=Session('http://localhost:8080/', schema=models_as_jsonschema)
a=s.create('articles') # Creates empty ResourceObject of 'articles' typea.title='Test title'# Validates and performs POST request, and finally updates resource based on server responsea.commit(meta={'some_meta': 'data'})
# Or with AsyncIO, remember to awaitawaita.commit(meta={'some_meta': 'data'})
# Commit metadata could be also saved in advance:a.commit_metadata= {'some_meta': 'data'}
# You can also commit all changed resources in session bys.commit()
# or with AsyncIOawaits.commit()
# Another example of resource creation, setting attributes and relationships & committing:# If you have underscores in your field names, you can pass them in fields keyword argument as# a dictionary:cust1=s.create_and_commit('articles',
attribute='1',
dict_object__attribute='2',
to_one_relationship='3',
to_many_relationship=['1', '2'],
fields={'some_field_with_underscore': '1'}
)
# Async:cust1=awaits.create_and_commit('articles',
attribute='1',
dict_object__attribute='2',
to_one_relationship='3',
to_many_relationship=['1', '2'],
fields={'some_field_with_underscore': '1'}
)# Delete resourcecust1.delete() # Mark to be deletedcust1.commit() # Actually delete- Work was supported by Qvantel (http://qvantel.com).
- Author and package maintainer: Tuomas Airaksinen (https://github.com/tuomas2/).
Copyright (c) 2017, Qvantel
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