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POjQuery DataTables Filtering for Specific Columns Only
 

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  1. POjQuery DataTables Filtering for Specific Columns Only
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    <p>I am using the jQuery plugin DataTables (<a href="http://datatables.net" rel="noreferrer">http://datatables.net</a>) for pagination, search capabilities and filtering. </p> <p>There is a filter function (<a href="http://datatables.net/release-datatables/examples/api/multi_filter_select.html" rel="noreferrer">http://datatables.net/release-datatables/examples/api/multi_filter_select.html</a>) that places form select elements for each column. </p> <p>My issue is that I don't want the filter select elements for every column, only some. I've modified the original code as I want Yes/No filtering only, and my first column contains user names. </p> <p>How do I remove the form select element from the first column?</p> <p>JavaScript:</p> <pre><code>&lt;script type="text/javascript"&gt; $(document).ready(function() { (function($) { /* * Function: fnGetColumnData * Purpose: Return an array of table values from a particular column. * Returns: array string: 1d data array * Inputs: object:oSettings - dataTable settings object. This is always the last argument past to the function * int:iColumn - the id of the column to extract the data from * bool:bUnique - optional - if set to false duplicated values are not filtered out * bool:bFiltered - optional - if set to false all the table data is used (not only the filtered) * bool:bIgnoreEmpty - optional - if set to false empty values are not filtered from the result array * Author: Benedikt Forchhammer &lt;b.forchhammer /AT\ mind2.de&gt; */ $.fn.dataTableExt.oApi.fnGetColumnData = function ( oSettings, iColumn, bUnique, bFiltered, bIgnoreEmpty ) { // check that we have a column id if ( typeof iColumn == "undefined" ) return new Array(); // by default we only want unique data if ( typeof bUnique == "undefined" ) bUnique = true; // by default we do want to only look at filtered data if ( typeof bFiltered == "undefined" ) bFiltered = true; // by default we do not wany to include empty values if ( typeof bIgnoreEmpty == "undefined" ) bIgnoreEmpty = true; // list of rows which we're going to loop through var aiRows; // use only filtered rows if (bFiltered == true) aiRows = oSettings.aiDisplay; // use all rows else aiRows = oSettings.aiDisplayMaster; // all row numbers // set up data array var asResultData = new Array(); for (var i=0,c=aiRows.length; i&lt;c; i++) { iRow = aiRows[i]; var aData = this.fnGetData(iRow); var sValue = aData[iColumn]; // ignore empty values? if (bIgnoreEmpty == true &amp;&amp; sValue.length == 0) continue; // ignore unique values? else if (bUnique == true &amp;&amp; jQuery.inArray(sValue, asResultData) &gt; -1) continue; // else push the value onto the result data array else asResultData.push(sValue); } return asResultData; }}(jQuery)); function fnCreateSelect( aData ) { return '&lt;select&gt;&lt;option value=""&gt;Select&lt;/option&gt;&lt;option value="Yes"&gt;Yes&lt;/option&gt;&lt;option value="No"&gt;No&lt;/option&gt;&lt;/select&gt;'; } var oTable = $('#results').dataTable({ "sDom": '&lt;&lt;"filters"f&gt;&lt;"clear"&gt;&lt;"top"Tp&gt;&lt;"clear"&gt;rt&lt;"bottom"il&gt;&gt;', "iDisplayLength": 5, "sPaginationType": "full_numbers", "bSortCellsTop": true, "oLanguage": { "sSearch": "Search all columns:" }, "aoColumns": [ null, { "sType": "title-string" }, { "sType": "title-string" }, { "sType": "title-string" }, { "sType": "title-string" } ], "oTableTools": { "sSwfPath": "../../scripts/TableTools/copy_cvs_xls_pdf.swf" } }); /* Add a select menu for each TH element in the table footer */ $("thead #filter td").each( function ( i ) { this.innerHTML = fnCreateSelect( oTable.fnGetColumnData(i) ); $('select', this).change( function () { oTable.fnFilter( $(this).val(), i ); } ); } ); } ); &lt;/script&gt; </code></pre> <p>HTML:</p> <pre><code>&lt;table id="results" class="display"&gt; &lt;thead&gt; &lt;tr id="labels"&gt; &lt;th&gt;1&lt;/th&gt; &lt;th&gt;2&lt;/th&gt; &lt;th&gt;3&lt;/th&gt; &lt;th&gt;4&lt;/th&gt; &lt;th&gt;5?&lt;/th&gt; &lt;/tr&gt; &lt;tr id="filter"&gt; &lt;td&gt;1&lt;/td&gt; &lt;td&gt;2&lt;/td&gt; &lt;td&gt;3&lt;/td&gt; &lt;td&gt;4&lt;/td&gt; &lt;td&gt;5?&lt;/td&gt; &lt;/tr&gt; &lt;/thead&gt; &lt;tbody&gt; ... &lt;/tbody&gt; &lt;/table&gt; </code></pre>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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