add helper
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cf28d5cdc5
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0024ee3231
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"helper functions"
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from flask import abort
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def find_one_or_404(collection, **kwargs):
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"""Find a single document or raise a 404.
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This is like :meth:`~pymongo.collection.Collection.find_one`, but
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rather than returning ``None``, cause a 404 Not Found HTTP status
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on the request.
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.. code-block:: python
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@app.route("/user/<username>")
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def user_profile(username):
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userfound = find_one_or_404(usercollection, {"_id": username})
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return render_template("user.html",
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user=userfound)
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"""
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found = collection.find_one(**kwargs)
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if found is None:
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abort(404)
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return found
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