Rows page for rows that linked to the same table in more
than one columns were display incorrectly. Fixed that and added a test.
Also introduced /db/table/row-pk.json?_extras=foreign_key_tables
This is used by the new unit test, but is the first example of a new
?_extras=comma-separated-list pattern I am introducing.
This:
?_filter_column_1=name&_filter_op_1=contains&_filter_value_1=hello
&_filter_column_2=age&_filter_op_2=gte&_filter_value_2=12
Now redirects to this:
?name__contains=hello&age__gte=12
This is needed for the filter editing interface, refs #86
if filter_op contains a __ the value is set to the right hand side.
e.g.
?_filter_column=col&_filter_op=isnull__1&_filter_value=x
Redirects to:
?col__isnull=1
Refs #86
Part of implementing the filters UI (refs #86) - the following:
/trees/Trees?_filter_column=SiteOrder&_filter_op=gt&_filter_value=2
Now redirects to this;
/trees/Trees?SiteOrder__gt=2
Added a unit test for the sql_time_limit_ms option.
To test this, I needed to add a custom SQLite sleep() function. I've added a
simple mechanism to the Datasette class for registering custom functions.
I also had to modify the sqlite_timelimit() function. It makes use of a magic
value, N, which is the number of SQLite virtual machine instructions that
should execute in between calls to my termination decision function.
The value of N was not finely grained enough for my test to work - so I've
added logic that says that if the time limit is less than 50ms, N is set to 1.
This got the tests working.
Refs #95
If someone executes 'select * from table' against a table with a million rows
in it, we could run into problems: just serializing that much data as JSON is
likely to lock up the server.
Solution: we now have a hard limit on the maximum number of rows that can be
returned by a query. If that limit is exceeded, the server will return a
`"truncated": true` field in the JSON.
This limit can be optionally controlled by the new `--max_returned_rows`
option. Setting that option to 0 disables the limit entirely.
Closes#69
Simon Willison