Modern UI helper functions

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Background

There are several helper functions that are available for use within Modern UI hook scripts and Freemarker templates.

removeParam(qs, paramNames)

Removes a set of parameters from a query string.

Parameters

  • qs: query string
  • paramNames: list of parameters to remove from string

Freemarker macro

The following macro can also be used to call this function:

<#macro RemoveParams params=[]>
<#-- Removes specified parameters from the query string -->
<#local qs><#nested></#local>
<#compress>
${removeParam(qs, params)}
</#compress>
</#macro>

Example

Return a link that strips off all the faceted navigation parameters (and the start rank) from the query string:

<a href="${question.collection.configuration.value("ui.modern.search_link")}?<@custom.RemoveParams params=question.selectedCategoryValues?keys + ["start_rank"]">${QueryString}</@custom.RemoveParams>">Clear selected filters</a>

facetScopeRemove(qs, paramNames)

Utility method used in faceted navigation when building facets breadcrumbs. Used to remove a given list of facet constraint from the facetScope parameter of the query string.

Parameters

  • qs: query string
  • paramNames: list of parameters to remove from string

Freemarker macro

The following macro can also be used to call this function:

<#macro FacetScopeRemove params=[]>
<#-- Removes specified parameters from the query string -->
<#compress>
<#local qs><#nested></#local>
${facetScopeRemove(qs, params)}
</#compress>
</#macro>
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Features: Frontend > Modern UI Frontend > Freemarker Frontend > Hook scripts

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