basic filtering - view-a-LOD/Valeros GitHub Wiki

Each filter option (e.g., "license") can filter search results based on pre-defined fields (e.g., "sdo:license"), looking at corresponding node values (e.g., "public domain").

Add/remove filter options in config/settings.ts (under filtering/filterOptions):

filtering: {  
  filterOptions: {  
	type: {  
	  label: 'Soort',  
	  fieldIds: typePredicates,  
	  values: [],  
	  hideValueIds: [...hideFilterOptionValueIds],  
	},  
	parents: {  
	  label: 'Is onderdeel van',  
	  fieldIds: [  
		...parentPredicates,  
		'https://hetutrechtsarchief.nl/def/isDescendentOf',  
	  ],  
	  values: [],  
	  hideValueIds: [...hideFilterOptionValueIds],  
	},  
	license: {  
	  label: 'Licentie',  
	  fieldIds: ['https://schema.org/license'],  
	  values: [],  
	},  
  },  
}

The fieldIds value is used to consider multiple predicates for a single filter.

As an example: the "Type" filter might refer to both the rdf:type and wd:P31 node fields.

The potential values for each filter are automatically retrieved using elastic in the Filter Service (services/search/filter.service.ts), which is why the values field in the Settings file is empty by default.

If there are certain values you want to prevent from showing up, please add the IRIs in the hideValueIds field.

As an example, to hide mdto:ChecksumGegevens in the image below: hideValueIds: ['http://www.nationaalarchief.nl/mdto#ChecksumGegevens']

Alternatively, if you know of a limited set of filter values that you want to display ahead of time (thereby hiding all other values), please use the showOnlyValueIds field.

As an example, to exclusively show the 'Agenda' value for the 'Classificatie' filter:

classificatie: {
	label: 'Classificatie',
	fieldIds: ['classificatie'],
	values: [],
	showOnlyValueIds: ['Agenda']
}