Chalice and Peewee, Error by calling different view

Question

I have the following chalice app:

# encoding: utf-8
from chalice import Chalice
from models import ContentItem

app = Chalice(app_name='moderations')
app.debug = True


@app.route("/item/{item_id}", methods=['GET'])
def view_item(item_id):
    instance = ContentItem.get(ContentItem.id == item_id)
    return model_to_dict(instance)

@app.route("/item/{item_id}", methods=['POST'])
def save_item(item_id):
    request = app.current_request
    data = request.json_body
    instance = ContentItem.get(ContentItem.id == item_id)
    instance.content = data
    instance.save()
    return


def model_to_dict(instance):
    data = {'content': instance.content, 'id': instance.id}
    return data

And I am running chalice local

When to go to GET http://localhost:8000/item/1234, I get the record fine But then if I go to POST http://localhost:8000/item/1234, nothing happens, just sits there waiting ...

If I post first, which will work fine, then get the detail page, which results the same waiting game.

What have I done wrong?

PS. I raised the issue on the repo here https://github.com/aws/chalice/issues/628 — James Lin, Dec 14 '17 at 19:25

score 0 · Answer 1 · edited Dec 15 '17 at 20:07

0

The connection is not closed properly. before_request and after_request not supported by chalice yet. So we need to close the connection as it finish.

I suggest to use ExecutionContext to create separate connecton for the each exection.

@app.route("/item/{item_id}", methods=['GET'])
def view_item(item_id):

    with db.execution_context():
        # This statement is executed using the new `ctx_conn`.
        instance = ContentItem.get(ContentItem.id == item_id)
    return model_to_dict(instance)

edited Dec 15 '17 at 20:07

coleifer

24,887
6
60
75

answered Dec 14 '17 at 10:59

Raja Simon

10,126
5
43
74

1

@coleifer thanks for the edit. you're right. And did you noticed the `with` indent. I wrongly indent that. – Raja Simon Dec 14 '17 at 18:27
1

I assume we would not need this when deployed to AWS Lambda right? – James Lin Dec 14 '17 at 19:26

Chalice and Peewee, Error by calling different view

1 Answers1