0.63

See Datasette 0.63: The annotated release notes for more background on the changes in this release.

Features

• Now tested against Python 3.11. Docker containers used by datasette publish and datasette package both now use that version of Python. (#1853)
• --load-extension option now supports entrypoints. Thanks, Alex Garcia. (#1789)
• Facet size can now be set per-table with the new facet_size table metadata option. (#1804)
• The truncate_cells_html setting now also affects long URLs in columns. (#1805)
• The non-JavaScript SQL editor textarea now increases height to fit the SQL query. (#1786)
• Facets are now displayed with better line-breaks in long values. Thanks, Daniel Rech. (#1794)
• The settings.json file used in Configuration directory mode is now validated on startup. (#1816)
• SQL queries can now include leading SQL comments, using /* ... */ or -- ... syntax. Thanks, Charles Nepote. (#1860)
• SQL query is now re-displayed when terminated with a time limit error. (#1819)
• The inspect data mechanism is now used to speed up server startup - thanks, Forest Gregg. (#1834)
• In Configuration directory mode databases with filenames ending in .sqlite or .sqlite3 are now automatically added to the Datasette instance. (#1646)
• Breadcrumb navigation display now respects the current user's permissions. (#1831)

Plugin hooks and internals

• The prepare_jinja2_environment(env, datasette) plugin hook now accepts an optional datasette argument. Hook implementations can also now return an async function which will be awaited automatically. (#1809)
• Database(is_mutable=) now defaults to True. (#1808)
• The datasette.check_visibility() method now accepts an optional permissions= list, allowing it to take multiple permissions into account at once when deciding if something should be shown as public or private. This has been used to correctly display padlock icons in more places in the Datasette interface. (#1829)
• Datasette no longer enforces upper bounds on its dependencies. (#1800)

Documentation

• New tutorial: Cleaning data with sqlite-utils and Datasette.
• Screenshots in the documentation are now maintained using shot-scraper, as described in Automating screenshots for the Datasette documentation using shot-scraper. (#1844)
• More detailed command descriptions on the CLI reference page. (#1787)
• New documentation on Running Datasette using OpenRC - thanks, Adam Simpson. (#1825)

0.63a1

• SQL query is now re-displayed when terminated with a time limit error. (#1819)
• New documentation on Running Datasette using OpenRC - thanks, Adam Simpson. (#1825)
• The inspect data mechanism is now used to speed up server startup - thanks, Forest Gregg. (#1834)
• In Configuration directory mode databases with filenames ending in .sqlite or .sqlite3 are now automatically added to the Datasette instance. (#1646)
• Breadcrumb navigation display now respects the current user's permissions. (#1831)
• Screenshots in the documentation are now maintained using shot-scraper, as described in Automating screenshots for the Datasette documentation using shot-scraper. (#1844)
• The datasette.check_visibility() method now accepts an optional permissions= list, allowing it to take multiple permissions into account at once when deciding if something should be shown as public or private. This has been used to correctly display padlock icons in more places in the Datasette interface. (#1829)

0.63a0

• The prepare_jinja2_environment(env, datasette) plugin hook now accepts an optional datasette argument. Hook implementations can also now return an async function which will be awaited automatically. (#1809)
• --load-extension option now supports entrypoints. Thanks, Alex Garcia. (#1789)
• New tutorial: Cleaning data with sqlite-utils and Datasette.
• Facet size can now be set per-table with the new facet_size table metadata option. (#1804)
• truncate_cells_html setting now also affects long URLs in columns. (#1805)
• Database(is_mutable=) now defaults to True. (#1808)
• Non-JavaScript textarea now increases height to fit the SQL query. (#1786)
• More detailed command descriptions on the CLI reference page. (#1787)
• Datasette no longer enforces upper bounds on its depenedencies. (#1800)
• Facets are now displayed with better line-breaks in long values. Thanks, Daniel Rech. (#1794)
• The settings.json file used in Configuration directory mode is now validated on startup. (#1816)

0.62

Datasette can now run entirely in your browser using WebAssembly. Try out Datasette Lite, take a look at the code or read more about it in Datasette Lite: a server-side Python web application running in a browser.

Datasette now has a Discord community for questions and discussions about Datasette and its ecosystem of projects.

Features

• Datasette is now compatible with Pyodide. This is the enabling technology behind Datasette Lite. (#1733)
• Database file downloads now implement conditional GET using ETags. (#1739)
• HTML for facet results and suggested results has been extracted out into new templates _facet_results.html and _suggested_facets.html. Thanks, M. Nasimul Haque. (#1759)
• Datasette now runs some SQL queries in parallel. This has limited impact on performance, see this research issue for details.
• New --nolock option for ignoring file locks when opening read-only databases. (#1744)
• Spaces in the database names in URLs are now encoded as + rather than ~20. (#1701)
• <Binary: 2427344 bytes> is now displayed as <Binary: 2,427,344 bytes> and is accompanied by tooltip showing "2.3MB". (#1712)
• The base Docker image used by datasette publish cloudrun, datasette package and the official Datasette image has been upgraded to 3.10.6-slim-bullseye. (#1768)
• Canned writable queries against immutable databases now show a warning message. (#1728)
• datasette publish cloudrun has a new --timeout option which can be used to increase the time limit applied by the Google Cloud build environment. Thanks, Tim Sherratt. (#1717)
• datasette publish cloudrun has new --min-instances and --max-instances options. (#1779)

Plugin hooks

• New plugin hook: handle_exception(), for custom handling of exceptions caught by Datasette. (#1770)
• The render_cell() plugin hook is now also passed a row argument, representing the sqlite3.Row object that is being rendered. (#1300)
• The configuration directory is now stored in datasette.config_dir, making it available to plugins. Thanks, Chris Amico. (#1766)

Bug fixes

• Don't show the facet option in the cog menu if faceting is not allowed. (#1683)
• ?_sort and ?_sort_desc now work if the column that is being sorted has been excluded from the query using ?_col= or ?_nocol=. (#1773)
• Fixed bug where ?_sort_desc was duplicated in the URL every time the Apply button was clicked. (#1738)

Documentation

• Examples in the documentation now include a copy-to-clipboard button. (#1748)
• Documentation now uses the Furo Sphinx theme. (#1746)
• Code examples in the documentation are now all formatted using Black. (#1718)
• Request.fake() method is now documented, see Request object.
• New documentation for plugin authors: Registering a plugin for the duration of a test. (#903)

0.62a1

• New plugin hook: handle_exception(), for custom handling of exceptions caught by Datasette. (#1770)
• The render_cell() plugin hook is now also passed a row argument, representing the sqlite3.Row object that is being rendered. (#1300)
• New --nolock option for ignoring file locks when opening read-only databases. (#1744)
• Documentation now uses the Furo Sphinx theme. (#1746)
• Datasette now has a Discord community.
• Database file downloads now implement conditional GET using ETags. (#1739)
• Examples in the documentation now include a copy-to-clipboard button. (#1748)
• HTML for facet results and suggested results has been extracted out into new templates _facet_results.html and _suggested_facets.html. Thanks, M. Nasimul Haque. (#1759)

0.62a0

• Datasette now runs some SQL queries in parallel. This has limited impact on performance, see this research issue for details.
• Datasette should now be compatible with Pyodide. (#1733)
• datasette publish cloudrun has a new --timeout option which can be used to increase the time limit applied by the Google Cloud build environment. Thanks, Tim Sherratt. (#1717)
• Spaces in database names are now encoded as + rather than ~20. (#1701)
• <Binary: 2427344 bytes> is now displayed as <Binary: 2,427,344 bytes> and is accompanied by tooltip showing "2.3MB". (#1712)
• Don't show the facet option in the cog menu if faceting is not allowed. (#1683)
• Code examples in the documentation are now all formatted using Black. (#1718)
• Request.fake() method is now documented, see Request object.

0.61.1

• Fixed a bug where databases with a different route from their name (as used by the datasette-hashed-urls plugin) returned errors when executing custom SQL queries. (#1682)

0.61

In preparation for Datasette 1.0, this release includes two potentially backwards-incompatible changes. Hashed URL mode has been moved to a separate plugin, and the way Datasette generates URLs to databases and tables with special characters in their name such as / and . has changed.

Datasette also now requires Python 3.7 or higher.

See also the annotated release notes.

• URLs within Datasette now use a different encoding scheme for tables or databases that include "special" characters outside of the range of a-zA-Z0-9_-. This scheme is explained here: Tilde encoding. (#1657)
• Removed hashed URL mode from Datasette. The new datasette-hashed-urls plugin can be used to achieve the same result, see datasette-hashed-urls for details. (#1661)
• Databases can now have a custom path within the Datasette instance that is independent of the database name, using the db.route property. (#1668)
• Datasette is now covered by a Code of Conduct. (#1654)
• Python 3.6 is no longer supported. (#1577)
• Tests now run against Python 3.11-dev. (#1621)
• New datasette.ensure_permissions(actor, permissions) internal method for checking multiple permissions at once. (#1675)
• New datasette.check_visibility(actor, action, resource=None) internal method for checking if a user can see a resource that would otherwise be invisible to unauthenticated users. (#1678)
• Table and row HTML pages now include a <link rel="alternate" type="application/json+datasette" href="..."> element and return a Link: URL; rel="alternate"; type="application/json+datasette" HTTP header pointing to the JSON version of those pages. (#1533)
• Access-Control-Expose-Headers: Link is now added to the CORS headers, allowing remote JavaScript to access that header.
• Canned queries are now shown at the top of the database page, directly below the SQL editor. Previously they were shown at the bottom, below the list of tables. (#1612)
• Datasette now has a default favicon. (#1603)
• sqlite_stat tables are now hidden by default. (#1587)
• SpatiaLite tables data_licenses, KNN and KNN2 are now hidden by default. (#1601)
• SQL query tracing mechanism now works for queries executed in asyncio sub-tasks, such as those created by asyncio.gather(). (#1576)
• datasette.tracer mechanism is now documented.
• Common Datasette symbols can now be imported directly from the top-level datasette package, see Import shortcuts. Those symbols are Response, Forbidden, NotFound, hookimpl, actor_matches_allow. (#957)
• /-/versions page now returns additional details for libraries used by SpatiaLite. (#1607)
• Documentation now links to the Datasette Tutorials.
• Datasette will now also look for SpatiaLite in /opt/homebrew - thanks, Dan Peterson. (#1649)
• Fixed bug where custom pages did not work on Windows. Thanks, Robert Christie. (#1545)
• Fixed error caused when a table had a column named n. (#1228)

0.61a0

• Removed hashed URL mode from Datasette. The new datasette-hashed-urls plugin can be used to achieve the same result, see datasette-hashed-urls for details. (#1661)
• Databases can now have a custom path within the Datasette instance that is indpendent of the database name, using the db.route property. (#1668)
• URLs within Datasette now use a different encoding scheme for tables or databases that include "special" characters outside of the range of a-zA-Z0-9_-. This scheme is explained here: Tilde encoding. (#1657)
• Table and row HTML pages now include a <link rel="alternate" type="application/json+datasette" href="..."> element and return a Link: URL; rel="alternate"; type="application/json+datasette" HTTP header pointing to the JSON version of those pages. (#1533)
• Access-Control-Expose-Headers: Link is now added to the CORS headers, allowing remote JavaScript to access that header.
• Canned queries are now shown at the top of the database page, directly below the SQL editor. Previously they were shown at the bottom, below the list of tables. (#1612)
• Datasette now has a default favicon. (#1603)
• sqlite_stat tables are now hidden by default. (#1587)
• SpatiaLite tables data_licenses, KNN and KNN2 are now hidden by default. (#1601)
• Python 3.6 is no longer supported. (#1577)
• Tests now run against Python 3.11-dev. (#1621)
• Fixed bug where custom pages did not work on Windows. Thanks, Robert Christie. (#1545)
• SQL query tracing mechanism now works for queries executed in asyncio sub-tasks, such as those created by asyncio.gather(). (#1576)
• datasette.tracer mechanism is now documented.
• Common Datasette symbols can now be imported directly from the top-level datasette package, see Import shortcuts. Those symbols are Response, Forbidden, NotFound, hookimpl, actor_matches_allow. (#957)
• /-/versions page now returns additional details for libraries used by SpatiaLite. (#1607)
• Documentation now links to the Datasette Tutorials.
• Datasette will now also look for SpatiaLite in /opt/homebrew - thanks, Dan Peterson. (#1649)
• Datasette is now covered by a Code of Conduct. (#1654)

0.60.2

• Fixed a bug where Datasette would open the same file twice with two different database names if you ran datasette file.db file.db. (#1632)