Dash v1.16.1

Dash and Dash-Renderer

Changed

• #1376 Extends the getTransform logic in the renderer to handle persistenceTransforms for both nested and non-nested persisted props. This was used to to fix dcc#700 in conjunction with dcc#854 by using persistenceTransforms to strip the time part of the datetime so that datepickers can persist when defined in callbacks.

Fixed

• #1408 Fixes a bug where the callback graph layout would reset whenever a callback fired, losing user-initiated layout changes (#1402) or creating a new force layout (#1401)

Dash-Core-Components

Fixed

• #854 Used persistenceTransforms to strip the time part of the datetime in the persited props of DatePickerSingle (date) and DatePickerRange (end_date, start_date), fixing dcc#700.

Added

• #850 Add property prependData to Graph to support Plotly.prependTraces
  • refactored the existing extendTraces API to be a single mergeTraces API that can handle both prepend as well as extend.

Updated

• #864 Upgraded Plotly.js to 1.55.2

Dash v1.16.0

Dash and Dash-Renderer

Added

• #1371 You can now get CSP script-src hashes of all added inline scripts by calling app.csp_hashes() (both Dash internal inline scripts, and those added with app.clientside_callback) .

Changed

• #1385 Closes #1350 and fixes a previously undefined callback behavior when multiple elements are stacked on top of one another and their n_clicks props are used as inputs of the same callback. The callback will now trigger once with all the triggered n_clicks props changes.
• #1179 New and improved callback graph in the debug menu. Now based on Cytoscape for much more interactivity, plus callback profiling including number of calls, fine-grained time information, bytes sent and received, and more. You can even add custom timing information on the server with callback_context.record_timing(name, seconds)

Fixed

• #1384 Fixed a bug introduced by #1180 breaking use of prevent_initial_call as a positional arg in callback definitions

Dash-Core-Components

Updated

• #858
  • Upgraded Plotly.js to 1.55.1
  • Patch release 1.55.1
  • Feature release of Plotly.js 1.55.0 which:
    • Introduce "period" ticklabelmode on cartesian date axes #4993, #5055, #5060, #5065, #5088, #5089
    • Add new formatting options for weeks and quarters #5026
    • Add source attribute to image traces for fast rendering #5075
    • Add zsmooth attribute for discrete heatmapgl traces #4953
    • Add horizontal and vertical markers for arrow charts #5010
    • Add touch support to rangeslider #5025

Dash v1.15.0

Dash and Dash Renderer

Added

• #1355 Removed redundant log message and consolidated logger initialization. You can now control the log level - for example suppress informational messages from Dash with app.logger.setLevel(logging.WARNING).
• #1253, #1377 Added experimental --jl-prefix option to dash-generate-components, optionally generates Julia version of components and corresponding Julia package

Changed

• #1180 and #1375 Input, Output, and State in callback definitions don't need to be in lists. You still need to provide Output items first, then Input items, then State, and the list form is still supported. In particular, if you want to return a single output item wrapped in a length-1 list, you should still wrap the Output in a list. This can be useful for procedurally-generated callbacks.
• #1368 Updated pytest to v6.0.1. To avoid deprecation warnings, this also updated pytest-sugar to 0.9.4 and pytest-mock to 3.2.0. The pytest-mock update only effects python >= 3.0. Pytest-mock remains pinned at 2.0.0 for python == 2.7.

Dash Core Components

Added

• #851 Add support for Dash.jl Julia built components
• #840 Add styling properties to dcc.Loading component
  • parent_className: Add CSS class for the outermost dcc.Loading parent div DOM node
  • parent_style: Add CSS style property for the outermost dcc.Loading parent div DOM node
  • provides a workaround for the previous behaviour the of className property, which changed in #740. parent_className (or inline styles in parent_style) now allow CSS rules to be applied to the outermost dcc.Loading div, which is no longer covered by className on loading completion as of Dash Core Components >= 1.9.1 (Dash >= 1.11.0).

Dash HTML Components

Added

• #165 Add support for Dash.jl Julia component generation.

Dash Table

Added

• #820 Add support for Dash.jl Julia built components

Fixed

• #817 Fix a regression introduced with #722 causing the tooltips to be misaligned with respect to their parent cell
• #818 Fix a regression causing copy/paste not to work when selecting a range of cells with Shift + mouse click
• #819 Fix pagination page_current and page_count fields to accommodate larger numbers

Dash v1.14.0

Dash and Dash-Renderer

Added

• #1343 Add title parameter to set the
  document title. This is the recommended alternative to setting app.title or overriding
  the index HTML.
• #1315 Add update_title parameter to set or disable the "Updating...." document title during updates. Closes #856 and #732

Dash-Core-Components

• #835
  • Upgraded Plotly.js to 1.54.7
    • Patch release 1.54.7
    • Patch release 1.54.6
    • Patch release 1.54.5
    • Patch release 1.54.4

Dash-Table

Added

• #808Fix a regression introduced with #787 making it impossible to open markdown links in the current tab.
  • Adds a new markdown_options property that supports:
    • link_target nested prop with values _blank, _parent, _self, _top or an arbitrary string (default: _blank)

Dash v1.13.4

Fixed

• #1310 Fix a regression since 1.13.0 preventing more than one loading state from being shown at a time.

Dash v1.13.3

Dash-Table

Fixed

• #798 Fix a bug where headers are not aligned with columns after an update #797

Dash v1.13.2

Dash and Dash-Renderer

Fixed

• #1305
  • Fix regression that causes crash when FLASK_ENV is modified during app execution
  • Fix regression that caused tests using _wait_for_callbacks to fail

Dash v1.13.1

Dash-Core-Components

Updated

• #824
  • Upgraded plotly.js to 1.54.3
    • Patch release 1.54.3
    • Patch release 1.54.2

Dash v1.13.0

Dash and Dash-Renderer

Added

• #1289 Supports DASH_PROXY env var to tell app.run_server to report the correct URL to view your app, when it's being proxied. Throws an error if the proxy is incompatible with the host and port you've given the server.
• #1240 Adds callback_context to clientside callbacks (e.g. dash_clientside.callback_context.triggered). Supports triggered, inputs, inputs_list, states, and states_list, all of which closely resemble their serverside cousins.

Changed

• #1237 Closes #920: Converts hot reload fetch failures into a server status indicator showing whether the latest fetch succeeded or failed. Callback fetch failures still appear as errors but have a clearer message.
• #1254 Modifies the callback chain implementation and improves performance for apps with a lot of components

Fixed

• #1255 Hard hot reload targets only the current window, not the top - so if your app is in an iframe you will only reload the app
• #1249 Fixes #919 so dash.testing is compatible with more pytest plugins, particularly pytest-flake8 and pytest-black.
• #1248 Fixes #1245, so you can use prop persistence with components that have dict IDs, ie for pattern-matching callbacks.
• #1185 Sort asset directories, same as we sort files inside those directories. This way if you need your assets loaded in a certain order, you can add prefixes to subdirectory names and enforce that order.
• #1288 Closes #1285: Debug=True should work in the main module.

Dash-Table

Added

• #787 Add cell_selectable property to allow/disallow cell selection

Changed

• #787
  • Clicking on a link in a Markdown cell now requires a single click instead of two
  • Links in Markdown cells now open a new tab (target="_blank")

Fixed

• #785 Fix a bug where the table does not refresh correctly if a property was previously missing
• #793
  • Fix a bug where headers aren't aligned with columns with fixed_rows #777
  • Fix a regression where headers don't scroll horizontally with fixed_rows #780

Dash v1.12.0

Dash and Dash-Renderer

Added

• #1228 Adds control over firing callbacks on page (or layout chunk) load. Individual callbacks can have their initial calls disabled in their definition @app.callback(..., prevent_initial_call=True) and similar for app.clientside_callback. The app-wide default can also be changed with app=Dash(prevent_initial_callbacks=True), then individual callbacks may disable this behavior.
• #1201 New attribute app.validation_layout allows you to create a multi-page app without suppress_callback_exceptions=True or layout function tricks. Set this to a component layout containing the superset of all IDs on all pages in your app.
• #1078 Permit usage of arbitrary file extensions for assets within component libraries

Fixed

• #1224 Fixes #1223, a very specific situation in which initial callbacks will not fire.
• #1220 Fixes #1216, a set of related issues about pattern-matching callbacks with ALL wildcards in their Output which would fail if no components matched the pattern.
• #1212 Fixes #1200 - prior to Dash 1.11, if none of the inputs to a callback were on the page, it was not an error. This was, and is now again, treated as though the callback raised PreventUpdate. The one exception to this is with pattern-matching callbacks, when every Input uses a multi-value wildcard (ALL or ALLSMALLER), and every Output is on the page. In that case the callback fires as usual.
• #1201 Fixes #1193 - prior to Dash 1.11, you could use flask.has_request_context() == False inside an app.layout function to provide a special layout containing all IDs for validation purposes in a multi-page app. Dash 1.11 broke this when we moved most of this validation into the renderer. This change makes it work again.

Dash-Core-Components

Changed

• #793 Added title key (i.e. HTML title attribute) to option dicts in dcc.Dropdown options[] list property.

Fixed

• #792 Improved the robustness of dcc.Store components, fixing #456 whereby persistent storage could become corrupted, and fixing lifecycle issues that prevented adding Store components to the page after initial loading.
• #790 Fixed bug where the dcc.Dropdown dropdown was hidden by the dash_table.DataTable fixed rows and columns.

Updated

• #800
  • Upgraded plotly.js to 1.54.1
  • Feature release of Plotly.js 1.54.0 which:
    • Introduces new drag modes "drawline", "drawrect", "drawcircle", "drawopenpath", "drawclosedpath", adds optional modebar buttons for drawing & removing new shapes inside cartesian subplots, adds newshape and activeshape attributes to layout, and adds editable and fillrule attributes to layout.shapes#4775
  • Add angle and allowoverlap attributes to marker of scattermapbox traces#4575, #4794
  • Also contains various other fixes

Dash-Table

Added

• #729 Improve conditional styling
  • style_data_conditional: Add support for row_index and column_id array of values
  • style_header_conditional: Add support for header_index and column_id array of values
  • style_filter_conditional: Add support for column_id array of values
  • style_cell_conditional: Add support for column_id array of values
  • style_data_conditional: Add new conditions state: 'active'|'selected' to customize selected and active cell styles

Fixed

• #722 Fix a bug where row height is misaligned when using fixed_columns and/or fixed_rows
• #728 Fix copy/paste on readonly cells
• #724 Fix active_cell docstring: clarify optional nature of the row_id nested prop
• #732 Fix a bug where opening a dropdown scrolled the table down its last row
• #731 Fix a bug where data=None and columns=None caused the table to throw an error
• #766 Sanitize table id for stylesheet injection (fixes usage with Pattern-Matching callbacks)

Changed

• #758 Improve error message for invalid filter queries