Implement selection of multiple categories in filters

Author: mastervanleeuwen

components/com_jtg/models/files.php

@@ -83,10 +83,18 @@ protected function getListQuery(){
 		->join('LEFT','#__users AS c ON a.uid=c.id');
 
 		// Filter company
-		$trackcat = $this->getState('filter.trackcat');
-		if (!empty($trackcat)) {
-		    //error_log('Got category from state '.$trackcat);
-			$query->where('a.catid LIKE '.$db->quote('%'.$trackcat.'%'));
+      $trackcats = $this->getState('filter.trackcat');
+      if (!empty($trackcats)) {
+			$iCount = 0;
+			foreach ($trackcats as $trackcat) {
+				if ($iCount == 0) {
+					$query->where('a.catid LIKE '.$db->quote('%'.$trackcat.'%'));
+				}
+				else {
+					$query->orWhere('a.catid LIKE '.$db->quote('%'.$trackcat.'%'));
+				}
+				$iCount++;
+			}
 		}
 		else {
 		    $trackcat = $input->get('cat');

components/com_jtg/models/forms/filter_files.xml

@@ -28,9 +28,10 @@
             onchange="this.form.submit()"
 		/>
 		<field
-		    name="trackcat"
-		    type="trackcategory"
-		    onchange="this.form.submit()"
+			name="trackcat"
+		 	type="trackcategory"
+			multiple="multiple"
+			onchange="this.form.submit()"
 		/>
 	</fields>
 	<fields name="list">

components/com_jtg/models/forms/filter_jtg.xml

@@ -16,21 +16,22 @@
 		    onchange="this.form.submit();"
 		/>
 		<field
-		    name="maxdist"
-		    type="number"
-		    label="COM_JTG_DISTANCE"
-		    hint="COM_JTG_MAX_DISTANCE"
-		    onchange="this.form.submit()"
+		 	name="maxdist"
+			type="number"
+			label="COM_JTG_DISTANCE"
+			hint="COM_JTG_MAX_DISTANCE"
+			onchange="this.form.submit()"
 		/>
 		<field
-            name="tracklevel"
-            type="tracklevel"
-            onchange="this.form.submit()"
+			name="tracklevel"
+			type="tracklevel"
+			onchange="this.form.submit()"
 		/>
 		<field
-		    name="trackcat"
-		    type="trackcategory"
-		    onchange="this.form.submit()"
+			name="trackcat"
+			type="trackcategory"
+			multiple="multiple"
+			onchange="this.form.submit()"
 		/>
 	</fields>
 </form>

components/com_jtg/models/jtg.php

@@ -61,10 +61,19 @@ protected function getListQuery(){
       ->join('LEFT','#__users AS c ON a.uid=c.id');
 
       // Filter company
-      $trackcat = $this->getState('filter.trackcat');
-      if (!empty($trackcat)) {
-         $query->where('a.catid LIKE '.$db->quote('%'.$trackcat.'%'));
-      }
+      $trackcats = $this->getState('filter.trackcat');
+      if (!empty($trackcats)) {
+			$iCount = 0;
+			foreach ($trackcats as $trackcat) {
+				if ($iCount == 0) {
+					$query->where('a.catid LIKE '.$db->quote('%'.$trackcat.'%'));
+				}
+				else {
+					$query->orWhere('a.catid LIKE '.$db->quote('%'.$trackcat.'%'));
+				}
+				$iCount++;
+			}
+		}
       else {
           $trackcat = JFactory::getApplication()->input->get('cat');
           if ($trackcat !== null) {