id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
471292050,MDU6SXNzdWU0NzEyOTIwNTA=,563,incorrect json url for row-level data?,10352819,closed,0,,,0,2019-07-22T19:59:38Z,2019-10-21T02:03:09Z,2019-10-21T02:03:09Z,CONTRIBUTOR,,"While visiting [this example page](https://register-of-members-interests.datasettes.com/regmem-98dc8b7/people/uk.org.publicwhip%2Fperson%2F10001) (linked from Datasette documentation), manually clicking on [the link](https://register-of-members-interests.datasettes.com/regmem-98dc8b7/people/uk.org.publicwhip%2Fperson%2F10001?_format=json) (""This data as .json"") to the json data results in an error 500 `data() got an unexpected keyword argument 'as_format'`

The [JSON page linked to from the documentation](https://register-of-members-interests.datasettes.com/regmem-d22c12c/people/uk.org.publicwhip%2Fperson%2F10001.json) however is correct (the page address ends in `.json` rather than using a query string `?format=json`)

This particular datasette demo page is now a few versions behind, but I was able to reproduce the issue using v0.29.2 and a downloaded copy of the demo database (and also with the current HEAD).

Here is a stack trace:

```
Traceback (most recent call last):
  File ""/home/romain/miniconda3/envs/dsbug/lib/python3.7/site-packages/datasette/utils/asgi.py"", line 101, in __call__
    return await view(new_scope, receive, send)
  File ""/home/romain/miniconda3/envs/dsbug/lib/python3.7/site-packages/datasette/utils/asgi.py"", line 173, in view
    request, **scope[""url_route""][""kwargs""]
  File ""/home/romain/miniconda3/envs/dsbug/lib/python3.7/site-packages/datasette/views/base.py"", line 267, in get
    request, database, hash, correct_hash_provided, **kwargs
  File ""/home/romain/miniconda3/envs/dsbug/lib/python3.7/site-packages/datasette/views/base.py"", line 399, in view_get
    request, database, hash, **kwargs
TypeError: data() got an unexpected keyword argument 'as_format'

```",107914493,issue,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/563/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
398559195,MDU6SXNzdWUzOTg1NTkxOTU=,400,datasette publish cloudrun plugin,10352819,closed,0,,,1,2019-01-12T14:35:11Z,2019-05-03T16:57:35Z,2019-05-03T16:57:35Z,CONTRIBUTOR,,"Google announced that they may launch a simple service for running Docker containers (previously serverless containers, now called ""cloud run"" -- link to alpha [here](https://services.google.com/fb/forms/serverlesscontainers/)). If/when this happens, it might be a good fit for publishing datasettes? (at least using the current version, manually publishing a datasette seems relatively painless).",107914493,issue,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/400/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed