125 lines
3.5 KiB
Python
125 lines
3.5 KiB
Python
"""
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This file contains DELETE routes methods.
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"""
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import bottle
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import database
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import json
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import tools
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def delete_paper(id, db):
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"""
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Delete a given paper.
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.. code-block:: bash
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DELETE /papers/1
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Accept: application/vnd.api+json
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.. code-block:: bash
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HTTP 204
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:param id: The id of the requested paper to be deleted.
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:param db: A database session, injected by the ``Bottle`` plugin.
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:returns: An ``HTTPResponse``.
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"""
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resource = db.query(database.Paper).filter_by(id=id).first()
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if resource:
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db.delete(resource)
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return tools.APIResponse(status=204, body="")
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return bottle.HTTPError(404, "Not found")
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def delete_relationship(id, name, db):
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"""
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Delete a given relationship
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.. code-block:: bash
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DELETE /papers/1/relationships/cite
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Content-Type: application/vnd.api+json
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Accept: application/vnd.api+json
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{
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"data": [
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{ "type": "cite", "id": "2" },
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…
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]
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}
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.. code-block:: bash
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HTTP 204
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:param id: The id of the requested paper from which the relationship \
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should be deleted.
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:param name: The name of the relationship to delete from.
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:param db: A database session, injected by the ``Bottle`` plugin.
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:returns: An ``HTTPResponse``.
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"""
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data = json.loads(bottle.request.body.read().decode("utf-8"))
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# Validate the request
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if "data" not in data:
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return bottle.HTTPError(403, "Forbidden")
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# Filter data, invalid entries are ignored
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data = [i for i in data["data"]
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if "type" in i and i["type"] == name and "id" in i]
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# Complete replacement (data == []) is forbidden
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if len(data) == 0:
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return bottle.HTTPError(403, "Forbidden")
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# Delete all the requested relationships
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for i in data:
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if i["type"] == "tags":
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# Handle tags separately
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tag = db.query(database.Tag).filter_by(id=i["id"]).first()
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paper = db.query(database.Paper).filter_by(id=id).first()
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if paper is None or tag is None:
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# An error occurred => 403
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return bottle.HTTPError(403, "Forbidden")
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try:
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paper.tags.remove(tag)
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except ValueError:
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# An error occurred => 403
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return bottle.HTTPError(403, "Forbidden")
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db.flush()
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else:
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relationship = (db.query(database.RelationshipAssociation)
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.filter_by(left_id=id, right_id=i["id"])
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.filter(database.Relationship.name == name)
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.first())
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if relationship is None:
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# An error occurred => 403
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return bottle.HTTPError(403, "Forbidden")
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db.delete(relationship)
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# Return an empty 204 on success
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return tools.APIResponse(status=204, body="")
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def delete_tag(id, db):
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"""
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Delete a given tag.
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.. code-block:: bash
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DELETE /tags/1
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Accept: application/vnd.api+json
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.. code-block:: bash
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HTTP 204
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:param id: The id of the requested tag to be deleted.
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:param db: A database session, injected by the ``Bottle`` plugin.
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:returns: An ``HTTPResponse``.
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"""
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resource = db.query(database.Tag).filter_by(id=id).first()
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if resource:
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db.delete(resource)
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return tools.APIResponse(status=204, body="")
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return bottle.HTTPError(404, "Not found")
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