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Parameters to the #ask function can apply to the filtered format as a whole (format level) or to only one specific printout (printout level). On format level there are some generic parameters that are common to all result formats and some format specific parameters that are used only by the filtered format.

Consider the following query:

|? SomePrintout |+filter=number
|? Position

In this query limit=100 is on format level (generic), views=map is on format level (format specific) and +filter=number is on printout level.

Format level - Generic:


  • format
  • mainlabel
  • sort
  • order
  • intro
  • outro
  • limit
  • offset
  • headers (Table view)

Not supported by the filtered format:

  • source
  • link
  • searchlabel
  • default

Format level - Format specific:

  • views (list|calendar|table|map)
  • filter position (top|bottom)

List view

  • list view type
  • list view template
  • list view named args
  • list view introtemplate
  • list view outrotemplate

Calendar view

  • calendar view start
  • calendar view end
  • calendar view title
  • calendar view title template

Table view

  • table view class

Map view

This view is only available if $srfgMapProvider is set in LocalSettings.php, e.g. $srfgMapProvider='OpenStreetMap.HOT';
See the list of available providers

  • map view marker position property
  • map view marker icon property
  • map view marker icons
  • map view height
  • map view zoom
  • map view min zoom
  • map view max zoom
  • map view marker cluster (true|false)
  • map view marker cluster max zoom
  • map view marker cluster max radius
  • map view marker cluster zoom on click (true|false)

Printout level

  • filter (comma-separated list of value, distance, and/or number)
  • hide (yes|no)
  • align (right|left|center) (Table view only)
  • show if undefined (yes|no)

Value filter

  • value filter collapsible (collapsed|uncollapsed)
  • value filter switches (comma-separated list of and or and/or on off)
  • value filter values (list of strings)
  • value filter max checkboxes (number. Default: 5)

Distance filter

  • distance filter origin (lat lon): Required
  • distance filter collapsible (collapsed|uncollapsed)
  • distance filter switches (on off)
  • distance filter initial value (number)
  • distance filter max distance (number)
  • distance filter unit (m|km|mi|nm)

Number filter

  • number filter collapsible (collapsed|uncollapsed)
  • number filter switches (on off)
  • number filter min value (number)
  • number filter max value (number)
  • number filter step (number)
  • number filter values (auto|comma-separated list of values): If this parameter is specified, min, max and step will be ignored.
  • number filter sliders (min|max|range|select)
  • number filter label (string)


This is only required for development, not for simple installation and usage.

From the .../SemanticResultFormats/formats/filtered directory run

npm install

Running tests


JavaScript tests use the QUnit test environment of MediaWiki. To enable the test environment add the following to LocalSettings.php:

$wgEnableJavaScriptTest = true;

Then the easiest way to run tests is to go to (with server and path modified as necessary).

To at some point allow for continuous integration testing the tests can also be run from the command line on a headless browser. Google Chrome 59 (currently in Beta status) allows headless execution. It will forward anything written to the JavaScript console to the CLI standard output. So, to run tests from the command line install Chrome Beta and run

google-chrome-beta \
--headless \
--disable-gpu \
--remote-debugging-port=9222 \

Chrome will remain running, so when the test run is finished it has to be force-stopped. See for details on headless Chrome.


PHP tests use PHPUnit. The easiest way to run all SRF tests including the tests for the Filtered format is to run composer phpunit from the SRF directory. However, for the tests to run it has to be ensured, that the $srfgMapProvider configuration variable is not set in LocalSettings.php.


The Filtered format contains the following software libraries:

Several other libraries are used for the build process. See the devDependencies in the package.json file.

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