How to fliter the filtered items in sap.m.list

问题:

I alredy have an sap.m.list which is already filtered based on one property.Now I again need to apply filter for that list to implement live search.

filterList:function(evt){
        debugger;
        var filters = [];
         var oFilter="";
        var query = evt.oSource.mProperties.value;
        if (query && query.length > 0) {
            var filter = new sap.ui.model.Filter("CLTYPE", sap.ui.model.FilterOperator.Contains, query);
            filters.push(filter);

            var filter1 = new sap.ui.model.Filter("CLCAT", sap.ui.model.FilterOperator.Contains, query);
            filters.push(filter1);
            var filter2 = new sap.ui.model.Filter("CLNUM", sap.ui.model.FilterOperator.Contains, query);
            filters.push(filter2);

            oFilter = new sap.ui.model.Filter( filters, false );
        }


        // update list binding
        var list = sap.ui.getCore().byId("List");
        var binding = list.getBinding("items");
        binding.filter(oFilter);
    },

here my list is already filtered.here list.getBinding('items') will give me all the items not the filtered Items.I applied filter for my sap.m.list as follows

     obj[filterParam] = context;

    var contextClauses=_.where(clauses,obj);
    sap.ui.getCore().getModel('ClauseModel').setProperty("/DATA/CURRENTCLAUSES",contextClauses);

// update list binding
var list = sap.ui.getCore().byId("List");
var binding = list.getBinding("items");
binding.filter(oFilter);

how to implement that??any suggestions?

回答1:

Add livechange to your textfield and call a function to filter your list.

new sap.ui.commons.TextField({type:"Text",
        value:"",
        liveChange: function(oEvent){   
        //Now call a function to filter your list.                                       
        filterList(oEvent,oStorage.get("previousFilteredList"));
        }});
        filterList: function(oEvent,yourObj){  
                  var like = oEvent.getParameter("liveValue");  
                  var oFilter = new sap.ui.model.Filter("name",   
                  sap.ui.model.FilterOperator.StartsWith,like);  
                  var element = sap.ui.getCore().getElementById("sample");  
                  var listBinding = element.getBinding("items");  
                  listBinding.filter([oFilter]);  
  //Add the filtered object oStorage after every filter to access the previous filtered data
                //oStorage.put("previousFilteredList","yourobj");  
        }, 
    //Wherever you filter your data first.
    oStorage = jQuery.sap.storage("session");
    oStorage.put("previousFilteredList","yourobj");

回答2:

I think you have 2 options:

1. Apply the original filter and then the additional filters.

2. Make a new instance of the initially filtered list:

   // assumes you have declared lists (initialList and newList)
   // values between <..> should be replaced
   
    jQuery.each (initialList, function (index, item) {
        if (item.<someField> == <somevalue>) {
           // you could add an additional field to the new list item like so:
           item["<newFieldName"] = <newValue>;
           if (item.<someOtherField> >= <someOtherValue>) {    
                newList.push(item);       // adds this item to the new array / list
           }
         }
         newListModel.setData(newList);        // assumes newListModel has been created
         //bind to control
   

回答3:

I solved it using the 'and' condition in filter

 var mainFilter=new sap.ui.model.Filter(parameter,sap.ui.model.FilterOperator.Contains,context);
        var query =evt.getParameter("newValue");
        if (query && query.length > 0)var filter1= new sap.ui.model.Filter("CLNAME",sap.ui.model.FilterOperator.Contains,query);
            filtersArr1.push(filter1);
            filtersArr1.push(mainFilter);
          var filter2 = new sap.ui.model.Filter("CLNUM",sap.ui.model.FilterOperator.Contains, query);
            filtersArr2.push(filter2);
            filtersArr2.push(mainFilter);oFilter1 = new sap.ui.model.Filter(filtersArr1,true);oFilter2 = new sap.ui.model.Filter(filtersArr2,true);filterGroup.push(oFilter1,oFilter2);oFilter4 = new sap.ui.model.Filter(filterGroup,false);
            binding.filter(oFilter4);

WORKING FINE

回答4:

 var listFilter=new sap.ui.model.Filter(parameter,sap.ui.model.FilterOperator.Contains,context);
    var query =evt.getParameter("newValue");
    if (query && query.length > 0)
        var filter1= new sap.ui.model.Filter({
            new sap.ui.model.Filter("CLNAME",sap.ui.model.FilterOperator.Contains,query),
            new sap.ui.model.Filter("CLNUM",sap.ui.model.FilterOperator.Contains, query)}, and:false),
            var oFilter =  new sap.ui.model.Filter( [filter1,  listFilter], true)

            binding.filter(oFilter);
        });