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id | page | ref | title | content | breadcrumbs | references ▼ |
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binary_data:binary | binary_data | binary | Binary data | SQLite tables can contain binary data in BLOB columns. Datasette includes special handling for these binary values. The Datasette interface detects binary values and provides a link to download their content, for example on https://latest.datasette.io/fixtures/binary_data Binary data is represented in .json exports using Base64 encoding. https://latest.datasette.io/fixtures/binary_data.json?_shape=array [ { "rowid": 1, "data": { "$base64": true, "encoded": "FRwCx60F/g==" } }, { "rowid": 2, "data": { "$base64": true, "encoded": "FRwDx60F/g==" } }, { "rowid": 3, "data": null } ] | [] | [{"href": "https://latest.datasette.io/fixtures/binary_data", "label": "https://latest.datasette.io/fixtures/binary_data"}, {"href": "https://latest.datasette.io/fixtures/binary_data.json?_shape=array", "label": "https://latest.datasette.io/fixtures/binary_data.json?_shape=array"}] |
csv_export:id1 | csv_export | id1 | CSV export | Any Datasette table, view or custom SQL query can be exported as CSV. To obtain the CSV representation of the table you are looking, click the "this data as CSV" link. You can also use the advanced export form for more control over the resulting file, which looks like this and has the following options: download file - instead of displaying CSV in your browser, this forces your browser to download the CSV to your downloads directory. expand labels - if your table has any foreign key references this option will cause the CSV to gain additional COLUMN_NAME_label columns with a label for each foreign key derived from the linked table. In this example the city_id column is accompanied by a city_id_label column. stream all rows - by default CSV files only contain the first max_returned_rows records. This option will cause Datasette to loop through every matching record and return them as a single CSV file. You can try that out on https://latest.datasette.io/fixtures/facetable?_size=4 | [] | [{"href": "https://latest.datasette.io/fixtures/facetable.csv?_labels=on&_size=max", "label": "In this example"}, {"href": "https://latest.datasette.io/fixtures/facetable?_size=4", "label": "https://latest.datasette.io/fixtures/facetable?_size=4"}] |
plugins:id1 | plugins | id1 | Plugins | Datasette's plugin system allows additional features to be implemented as Python code (or front-end JavaScript) which can be wrapped up in a separate Python package. The underlying mechanism uses pluggy . See the Datasette plugins directory for a list of existing plugins, or take a look at the datasette-plugin topic on GitHub. Things you can do with plugins include: Add visualizations to Datasette, for example datasette-cluster-map and datasette-vega . Make new custom SQL functions available for use within Datasette, for example datasette-haversine and datasette-jellyfish . Define custom output formats with custom extensions, for example datasette-atom and datasette-ics . Add template functions that can be called within your Jinja custom templates, for example datasette-render-markdown . Customize how database values are rendered in the Datasette interface, for example datasette-render-binary and datasette-pretty-json . Customize how Datasette's authentication and permissions systems work, for example datasette-auth-passwords and datasette-permissions-sql . | [] | [{"href": "https://pluggy.readthedocs.io/", "label": "pluggy"}, {"href": "https://datasette.io/plugins", "label": "Datasette plugins directory"}, {"href": "https://github.com/topics/datasette-plugin", "label": "datasette-plugin"}, {"href": "https://github.com/simonw/datasette-cluster-map", "label": "datasette-cluster-map"}, {"href": "https://github.com/simonw/datasette-vega", "label": "datasette-vega"}, {"href": "https://github.com/simonw/datasette-haversine", "label": "datasette-haversine"}, {"href": "https://github.com/simonw/datasette-jellyfish", "label": "datasette-jellyfish"}, {"href": "https://github.com/simonw/datasette-atom", "label": "datasette-atom"}, {"href": "https://github.com/simonw/datasette-ics", "label": "datasette-ics"}, {"href": "https://github.com/simonw/datasette-render-markdown#markdown-in-templates", "label": "datasette-render-markdown"}, {"href": "https://github.com/simonw/datasette-render-binary", "label": "datasette-render-binary"}, {"href": "https://github.com/simonw/datasette-pretty-json", "label": "datasette-pretty-json"}, {"href": "https://github.com/simonw/datasette-auth-passwords", "label": "datasette-auth-passwords"}, {"href": "https://github.com/simonw/datasette-permissions-sql", "label": "datasette-permissions-sql"}] |
plugin_hooks:id1 | plugin_hooks | id1 | Plugin hooks | Datasette plugins use plugin hooks to customize Datasette's behavior. These hooks are powered by the pluggy plugin system. Each plugin can implement one or more hooks using the @hookimpl decorator against a function named that matches one of the hooks documented on this page. When you implement a plugin hook you can accept any or all of the parameters that are documented as being passed to that hook. For example, you can implement the render_cell plugin hook like this even though the full documented hook signature is render_cell(row, value, column, table, database, datasette) : @hookimpl def render_cell(value, column): if column == "stars": return "*" * int(value) List of plugin hooks prepare_connection(conn, database, datasette) prepare_jinja2_environment(env, datasette) Page extras extra_template_vars(template, database, table, columns, view_name, request, datasette) extra_css_urls(template, database, table, columns, view_name, request, datasette) extra_js_urls(template, database, table, columns, view_name, request, datasette) extra_body_script(template, database, table, columns, view_name, request, datasette) publish_subcommand(publish) render_cell(row, value, column, table, database, datasette, request) register_output_re… | [] | [{"href": "https://pluggy.readthedocs.io/", "label": "pluggy"}] |
writing_plugins:id1 | writing_plugins | id1 | Writing plugins | You can write one-off plugins that apply to just one Datasette instance, or you can write plugins which can be installed using pip and can be shipped to the Python Package Index ( PyPI ) for other people to install. Want to start by looking at an example? The Datasette plugins directory lists more than 90 open source plugins with code you can explore. The plugin hooks page includes links to example plugins for each of the documented hooks. | [] | [{"href": "https://pypi.org/", "label": "PyPI"}, {"href": "https://datasette.io/plugins", "label": "Datasette plugins directory"}] |
index:datasette | index | datasette | Datasette | An open source multi-tool for exploring and publishing data Datasette is a tool for exploring and publishing data. It helps people take data of any shape or size and publish that as an interactive, explorable website and accompanying API. Datasette is aimed at data journalists, museum curators, archivists, local governments and anyone else who has data that they wish to share with the world. It is part of a wider ecosystem of tools and plugins dedicated to making working with structured data as productive as possible. Explore a demo , watch a presentation about the project or Try Datasette without installing anything using Glitch . Interested in learning Datasette? Start with the official tutorials . Support questions, feedback? Join the Datasette Discord . | [] | [{"href": "https://pypi.org/project/datasette/", "label": null}, {"href": "https://docs.datasette.io/en/stable/changelog.html", "label": null}, {"href": "https://pypi.org/project/datasette/", "label": null}, {"href": "https://github.com/simonw/datasette/actions?query=workflow%3ATest", "label": null}, {"href": "https://github.com/simonw/datasette/blob/main/LICENSE", "label": null}, {"href": "https://hub.docker.com/r/datasetteproject/datasette", "label": null}, {"href": "https://datasette.io/discord", "label": null}, {"href": "https://pypi.org/project/datasette/", "label": null}, {"href": "https://docs.datasette.io/en/stable/changelog.html", "label": null}, {"href": "https://pypi.org/project/datasette/", "label": null}, {"href": "https://github.com/simonw/datasette/actions?query=workflow%3ATest", "label": null}, {"href": "https://github.com/simonw/datasette/blob/main/LICENSE", "label": null}, {"href": "https://hub.docker.com/r/datasetteproject/datasette", "label": null}, {"href": "https://datasette.io/discord", "label": null}, {"href": "https://fivethirtyeight.datasettes.com/fivethirtyeight", "label": "Explore a demo"}, {"href": "https://static.simonwillison.net/static/2018/pybay-datasette/", "label": "a presentation about the project"}, {"href": "https://datasette.io/tutorials", "label": "the official tutorials"}, {"href": "https://datasette.io/discord", "label": "Datasette Discord"}] |
spatialite:id1 | spatialite | id1 | SpatiaLite | The SpatiaLite module for SQLite adds features for handling geographic and spatial data. For an example of what you can do with it, see the tutorial Building a location to time zone API with SpatiaLite . To use it with Datasette, you need to install the mod_spatialite dynamic library. This can then be loaded into Datasette using the --load-extension command-line option. Datasette can look for SpatiaLite in common installation locations if you run it like this: datasette --load-extension=spatialite --setting default_allow_sql off If SpatiaLite is in another location, use the full path to the extension instead: datasette --setting default_allow_sql off \ --load-extension=/usr/local/lib/mod_spatialite.dylib | [] | [{"href": "https://www.gaia-gis.it/fossil/libspatialite/index", "label": "SpatiaLite module"}, {"href": "https://datasette.io/tutorials/spatialite", "label": "Building a location to time zone API with SpatiaLite"}] |
full_text_search:id1 | full_text_search | id1 | Full-text search | SQLite includes a powerful mechanism for enabling full-text search against SQLite records. Datasette can detect if a table has had full-text search configured for it in the underlying database and display a search interface for filtering that table. Here's an example search : Datasette automatically detects which tables have been configured for full-text search. | [] | [{"href": "https://www.sqlite.org/fts3.html", "label": "a powerful mechanism for enabling full-text search"}, {"href": "https://register-of-members-interests.datasettes.com/regmem/items?_search=hamper&_sort_desc=date", "label": "an example search"}] |
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