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

Dash v1.11.0

Dash and Dash-Renderer

Added

• #1103 Pattern-matching IDs and callbacks. Component IDs can be dictionaries, and callbacks can reference patterns of components, using three different wildcards: ALL, MATCH, and ALLSMALLER, available from dash.dependencies. This lets you create components on demand, and have callbacks respond to any and all of them. To help with this, dash.callback_context gets three new entries: outputs_list, inputs_list, and states_list, which contain all the ids, properties, and except for the outputs, the property values from all matched components.
• #1103 dash.testing option --pause: after opening the dash app in a test, will invoke pdb for live debugging of both Javascript and Python. Use with a single test case like pytest -k cbwc001 --pause.

Changed

• #1103 Multiple changes to the callback pipeline:
  • dash.callback_context.triggered now does NOT reflect any initial values, and DOES reflect EVERY value which has been changed either by activity in the app or as a result of a previous callback. That means that the initial call of a callback with no prerequisite callbacks will list nothing as triggering. For backward compatibility, we continue to provide a length-1 list for triggered, but its id and property are blank strings, and bool(triggered) is False.
  • A user interaction which returns the same property value as was previously present will not trigger the component to re-render, nor trigger callbacks using that property as an input.
  • Callback validation is now mostly done in the browser, rather than in Python. A few things - mostly type validation, like ensuring IDs are strings or dicts and properties are strings - are still done in Python, but most others, like ensuring outputs are unique, inputs and outputs don't overlap, and (if desired) that IDs are present in the layout, are done in the browser. This means you can define callbacks BEFORE the layout and still validate IDs to the layout; and while developing an app, most errors in callback definitions will not halt the app.

Fixed

• #1103 Fixed multiple bugs with chained callbacks either not triggering, inconsistently triggering, or triggering multiple times. This includes: #635, #832, #1053, #1071, and #1084. Also fixed #1105: async components that aren't rendered by the page (for example in a background Tab) would block the app from executing callbacks.

Dash-Core-Components

Changed

• #740 Keep components that are loading in the DOM, but not visible, as opposed to removing them entirely. This will ensure that the size of the component's container does not shrink or expand when the component goes into the loading state.

Fixed

• #740 Fixed bug in which mapbox uirevision was not behaving when inside a dcc.Loading component

Dash v1.10.0

Dash and Dash-Renderer

Added

• #1134 Allow dash.run_server() host and port parameters to be set with environment variables HOST & PORT, respectively

Changed

• #1145 Update from React 16.8.6 to 16.13.0

Fixed

• #1142 Persistence: Also persist 0, empty string etc

Dash-Core-Components

Changed

• #766 Update from React 16.8.6 to 16.13.0
• #768 Added title property to dcc.Link
• #776 Update dcc.Link to set href as children if children not defined. Makes href a required prop as well.
• #767 Updated dcc.Link to respond to click modifiers, and added a target prop.
• #774 Fixed dcc.Location firing callbacks for wrong property.
• 772 Modified dcc.Link to work with absolute paths if refresh=True.

Updated

• #784
  • Feature release of Plotly.js 1.53.0 which contains:
    • rangebreaks on date axes #4614
    • (x|y) unified hovermode #4620
    • "hovered data" mode to spikesnap #4665
    • "full-json" export format to Plotly.toImage and Plotly.dowloadImage #4593
    • node.customdata and link.customdata in sankey traces #4621
    • opacityscale for surface traces #4480

Dash-Html-Components

Updated

• Update generated props
• Update generated R artifacts

Dash-Table

Changed

• #713 Update from React 16.8.6 to 16.13.0

Dash v1.9.0

Dash and Dash-Renderer

Fixed

• #1080 Handle case where dash fails to load when used inside an iframe with a sandbox attribute that only has allow-scripts

Dash-Core-Components

Changed

• #743 Location component now emits an event on URL path update from Link component
• #739 Async Slider and RangeSlider
• #729 Handle case where dcc fails to load when used inside an iframe with a sandbox attribute that only has allow-scripts

Fixed

• #730 Fixed bug in which input components with type number did not correctly update their values.
• #731 Fixed bug where non-clearable dropdowns could still be cleared by typing backspace

Updated

• #747
  • Upgrade plotly.js to 1.52.2