Dash v2.6.2

Fixed

• #2237 Ensure calls to plotly.js from dcc.Graph are properly sequenced even if React initiates multiple render cycles in quick succession.
• #2218 Fix bug #1348 Validate children prop (required or not).
• #2223 Exclude hidden folders when building dash.page_registry.
• #2182 Fix #2172 Make it so that when using pages, if suppress_callback_exceptions=True the validation_layout is not set.
• #2152 Fix bug #2128 preventing rendering of multiple components inside a dictionary.
• #2187 Fix confusing error message when trying to use pytest fixtures but dash[testing] is not installed.
• #2202 Fix bug #2185 when you copy text with multiple quotes into a table
• #2226 Fix #2219 pages register & background callbacks.

Dash v2.6.1

Fixed

• #2175 Fix #2173 callback output of ndarray and no_update check.
• #2146 Remove leftover debug console.log statement.
• #2168 Reverts #2126 (supporting redirect from root when using pages) until the new bugs introduced by that PR are fixed.

Updated

• #2167 Update Plotly.js to v2.13.3 (from v2.13.1) including patch release v2.13.2 and patch release v2.13.3.
  • Emit plotly_selected event on plot API calls and GUI edits.
  • Fix sankey select error (regression introduced in 2.13.0).
  • Handle missing drag layer of invisible sankey traces to fix select error.
  • Emit selection event in shape drawing dragmodes when an existing selection is modified.

Dash v2.6.0

Added

• #2109 Add maxHeight to Dropdown options menu.
• #2039 Long callback changes:
  • Add background=False to dash.callback to use instead of app.long_callback.
  • Add previous app.long_callback arguments to dash.callback (interval, running, cancel, progress, progress_default, cache_args_to_ignore, manager)
• #2110 Add search prop to dcc.Dropdown options, allowing to search the dropdown options with something other than the label or value.

Fixed

• #2126 Fix bug where it was not possible to redirect from root when using pages.
• #2114 Fix bug #1978 where text could not be copied from cells in tables with cell_selectable=False.
• #2102 Fix bug as reported in dash-labs #113 where files starting with . were not excluded when building dash.page_registry.
• #2100 Fixes bug where module name in for a custom not_found_404 page is incorrect in the dash.page_registry when not using the pages folder.
• #2098 Accept HTTP code 400 as well as 401 for JWT expiry
• #2097 Fix bug #2095 with TypeScript compiler and React.FC empty valueDeclaration error & support empty props components.
• #2104 Fix bug #2099 with Dropdown clearing search value when a value is selected.
• #2039 Fix bugs in long callbacks:
  • Fix #1769 and #1852 short interval makes job run in loop.
  • Fix #1974 returning no_update or raising PreventUpdate not supported with celery.
  • Fix use of the callback context in celery long callbacks.
  • Fix support of pattern matching for long callbacks.
• #2110 Fix dcc.Dropdown search with component as prop for option label.
• #2131 Add encoding to file open calls. Fix bug #2127.

Changed

• #2116 Rename long callbacks to background callbacks
  • Deprecated dash.long_callback.managers.CeleryLongCallbackManager, use dash.CeleryManager instead.
  • Deprecated dash.long_callback.managers.DiskcacheLongCallbackManager, use dash.DiskcacheManager instead.
  • Deprecated dash constructor argument long_callback_manager in favor of background_callback_manager.

Updated

• #2134 Upgrade Plotly.js to v2.13.1 (from v2.12.1) including feature release 2.13.0 and patch release 2.13.1
  • Add persistent selections via layout attributes selections, newselection, and activeselection, along with an updated UI allowing you to modify a selection you created.
  • Add unselected line styling to parcoords traces.
  • Add more quartile algorithms to violin traces.
  • More flexible axis automargin behavior.
  • And several other enhancements and bug fixes.

Dash v2.5.1

Fixed

• #2087 Fix bug #2086 in which using id as a key within a component's id breaks the new callback context's args_grouping function.
• #2084 In dash 2.5.0, a default viewport meta tag was added as recommended for mobile-optimized sites by mdn
  This feature can be disabled by providing an empty viewport meta tag. e.g. app = Dash(meta_tags=[{"name": "viewport"}])
• #2090, #2092. Fixed bug where the path to the pages_folder was incorrect on Windows.

Removed

• #2087 Removed the undocumented callback context args_grouping_values property which was incompatible with pattern-matching callbacks.

Dash v2.5.0

Added

• #1947 Added pages - a better way to build multi-page apps. For more information see the forum post.
• #1965 Add component as props.
• #2049 Added wait_for_class_to_equal and wait_for_contains_class methods to dash.testing

Changed

• #2050 Changed find_element and find_elements to accept an attribute argument that aligns with Selenium's By class, allowing you to search elements by other attributes. Default value is CSS_SELECTOR to maintain backwards compatibility with previous find_elements.

Fixed

• #2043 Fix bug
  #2003 in which
  dangerously_allow_html=True + mathjax=True works in some cases, and in some cases not.
• #2065 Fix bug #2064 rendering of dcc.Dropdown with a value but no options.
• #2047 Fix bug #1979 in which DASH_DEBUG as environment variable gets ignored.
• #2070 Fix bug #2066 nested types triggering maximum call stack error when building typescript components.

Dash v2.4.1

Fixed

• Fix #2045 import error when using pytest but dash[testing] is not installed.

Dash v2.4.0

Added

• #1952 Improved callback_context

  • Closes #1818 Closes #1054
  • adds dash.ctx, a more concise name for dash.callback_context
  • adds ctx.triggered_prop_ids, a dictionary of the component ids and props that triggered the callback.
  • adds ctx.triggered_id, the id of the component that triggered the callback.
  • adds ctx.args_grouping, a dict of the inputs used with flexible callback signatures.

• #2009 Add support for Promises within Client-side callbacks as requested in #1364.

• #1956 Add TypeScript components generation.

• #2034 Add link_target prop to dcc.Markdown component. Closes #1827

• #2035 Add type annotations to testing fixtures.

Fixed

• #2029 Restrict the number of props listed explicitly in generated component constructors - default is 250. This prevents exceeding the Python 3.6 limit of 255 arguments. The omitted props are still in the docstring and can still be provided the same as before, they just won't appear in the signature so autocompletion may be affected.

• #1968 Fix bug #1877, code which uses merge_duplicate_headers and style_header_conditional to highlight columns, it incorrectly highlights header cells.

• #2015 Fix bug #1854 in which the combination of row_selectable="single or multi" and filter_action="native" caused the JS error.

• #1976 Fix #1962 in which DatePickerSingle and DatePickerRange are extremely slow when provided a long list of disabled_days.

• #2035 Fix #2033 In-App error reporting does not render HTML.

• #1970 dcc.Dropdown Refactor fixes:

  • Fix bug #1868 value does not update when selected option removed from options.
  • Fix bug #1908 Selected options not showing when the value contains a comma.

Changed

• #1751 Rename app.run_server to app.run while preserving app.run_server for backwards compatibility.

• #1839 The callback decorator returns the original function, not the wrapped function, so that you can still call these functions directly, for example in tests. Note that in this case there will be no callback context so not all callbacks can be tested this way.

• #2016 Drop the 375px width from default percy_snapshot calls, keep only 1280px

• #2027 Improve the error message when a user doesn't wrap children in a list

Updated

• #2016, #2032, and #2042 Widespread dependency upgrades
  • Upgrade Plotly.js to v2.12.1 (from v2.11.0).
    • Feature release 2.12.0 adds minor ticks and gridlines, as well as dashed gridlines.
    • Patch release 2.11.1 fixes regl-based traces in strict CSP mode, however you must manually switch to the strict bundle to use this.
    • Patch release 2.12.1 fixes several bugs.
  • Upgrade black to v22.3.0 for Python 3.7+ - if you use dash[ci] and you call black, this may alter your code formatting slightly, including more consistently breaking Python 2 compatibility.
  • Many other mainly JS dependency upgrades to the internals of Dash renderer and components. These may patch bugs or improve performance.

Dash v2.3.1

Fixed

• #1963 Fix #1780 flask shutdown deprecation warning when running dashduo threaded tests.
• #1995 Fix #1992 ImportError: cannot import name 'get_current_traceback' from 'werkzeug.debug.tbtools'.

Dash v2.3.0

Added

• #1949 Add built-in MathJax support to both dcc.Markdown and dcc.Graph. A new boolean prop mathjax was added to these two components, defaulting to False. Set mathjax=True to enable math rendering. This work uses MathJax v3, although dcc.Graph and Plotly.js can also be used with MathJax v2.
  • In dcc.Markdown this has two flavors: inline math is any content between single dollar signs, for example "$E=mc^2$", and "display" math (on its own line, potentially multi-line) is delimited by double dollar signs.
  • In dcc.Graph, most text fields (graph and axis titles, trace names, scatter and bar text) can use math, and it's enabled with single dollar sign delimiters. A limitation here is that currently a given piece of text can only be one or the other: if math is found, everything outside the delimiters is ignored. See https://plotly.com/python/LaTeX/ for details.
  • For an intro to LaTeX math, see https://en.wikibooks.org/wiki/LaTeX/Mathematics.
  • Big thanks to Equinor for sponsoring this development, including the related work in Plotly.js!

Updated

• #1949 Upgrade Plotly.js to v2.11.0 (from v2.9.0)
  • Feature release 2.10.0:
    • Support for MathJax v3
    • fillpattern for scatter traces with filled area
  • Feature release 2.11.0:
    • Every trace type can now be rendered in a stricter CSP environment, specifically avoiding unsafe-eval. Please note: the regl-based traces (scattergl, scatterpolargl, parcoords, and splom) are only strict in the strict bundle, which is NOT served by default in Dash. To use this bundle with Dash, you must either download it and put it in your assets/ folder, or include it as an external_script from the CDN: https://cdn.plot.ly/plotly-strict-2.11.0.min.js. All other trace types are strict in the normal bundle.
  • Patch release 2.10.1 containing a bugfix for mesh3d traces.

Fixed

• #1915 Fix bug #1474 when both dcc.Graph and go.Figure have animation, and when the second animation in Figure is executed, the Frames from the first animation are played instead of the second one.

• #1953 Fix bug #1783 in which a failed hot reloader blocks the UI with alerts.

• #1942 Fix bug #1663 preventing pie traces from sending customdata with clickData and other events.

Dash v2.2.0

Added

• #1923:
  • dash.get_relative_path
  • dash.strip_relative_path
  • dash.get_asset_url
    This is similar to dash.callback where you don't need the app object. It makes it possible to use these
    functions in the pages folder of a multi-page app without running into the circular app imports issue.

Updated

• #1911 Upgrade Plotly.js to v2.9.0 (from v2.8.3).

  • Adds ticklabelstep to axes to reduce tick labels while still showing all ticks.
  • Displays the plotly.js version when hovering on the modebar. This helps debugging situations where there might be multiple sources of plotly.js, for example /assets vs the versions built into dcc or ddk.

• #1930 Upgrade JavaScript dependencies across renderer and all components.

Fixed

• #1932 Fixes several bugs:
  • Restores compatibility with IE11 #1925
  • Restores style_header text alignment in Dash Table #1914
  • Clears the unneeded webdriver-manager requirement from dash[testing] #1919