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84 lines
2.2 KiB
JavaScript
84 lines
2.2 KiB
JavaScript
/**
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* Return an array of table values from a particular column, with various
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* filtering options.
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*
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* DataTables 1.10+ provides the `dt-api column().data()` method, built-in to
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* the core, to provide this ability. As such, this method is marked deprecated,
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* but is available for use with legacy version of DataTables. Please use the
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* new API if you are used DataTables 1.10 or newer.
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*
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* @name fnGetColumnData
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* @summary Get the data from a column
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* @author [Benedikt Forchhammer](http://mind2.de)
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* @deprecated
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*
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* @param {integer} iColumn Column to get data from
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* @param {boolean} [bFiltered=true] Reduce the data set to only unique values
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* @param {boolean} [bUnique=true] Get data from filter results only
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* @param {boolean} [bIgnoreEmpty=true] Remove data elements which are empty
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* @returns {array} Array of data from the column
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*
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* @example
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* var table = $('#example').dataTable();
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* table.fnGetColumnData( 3 );
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*/
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jQuery.fn.dataTableExt.oApi.fnGetColumnData = function ( oSettings, iColumn, bUnique, bFiltered, bIgnoreEmpty ) {
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// check that we have a column id
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if ( typeof iColumn == "undefined" ) {
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return [];
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}
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// by default we only wany unique data
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if ( typeof bUnique == "undefined" ) {
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bUnique = true;
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}
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// by default we do want to only look at filtered data
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if ( typeof bFiltered == "undefined" ) {
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bFiltered = true;
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}
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// by default we do not wany to include empty values
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if ( typeof bIgnoreEmpty == "undefined" ) {
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bIgnoreEmpty = true;
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}
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// list of rows which we're going to loop through
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var aiRows;
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// use only filtered rows
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if (bFiltered === true) {
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aiRows = oSettings.aiDisplay;
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}
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// use all rows
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else {
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aiRows = oSettings.aiDisplayMaster; // all row numbers
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}
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// set up data array
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var asResultData = [];
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for (var i=0,c=aiRows.length; i<c; i++) {
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var iRow = aiRows[i];
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var sValue = this.fnGetData(iRow, iColumn);
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// ignore empty values?
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if (bIgnoreEmpty === true && sValue.length === 0) {
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continue;
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}
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// ignore unique values?
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else if (bUnique === true && jQuery.inArray(sValue, asResultData) > -1) {
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continue;
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}
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// else push the value onto the result data array
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else {
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asResultData.push(sValue);
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}
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}
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return asResultData;
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};
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