如何按嵌套在json中的列对OpenUI5 Grid进行过滤/排序？

Question

I'm now testing the capabilities of this grid and I'm having a look at this example at the moment. Last week, I tried some basic loading of data, returned from the controller of the MVC app that I'm working on. It returns json, which I then give to the grid to be displayed. The data, that I want to show, is stored in multiple tables. For now, I load data from only two of them for simplicity, because I'm only testing the capabilities of the grid - will it suit our needs.

The data, which arrives at the grid (in js), looks something like this:

{
    Cars: [
        {
            car_Number: '123',
            car_Color: 'red',
            car_Owner: Owner: {
                owner_ID: '234',
                owner_Name: 'John'
            },
            car_DateBought: '/Date(1450648800000)/'
        },
        {
            car_Number: '456',
            car_Color: 'yellow',
            car_Owner: Owner: {
                owner_ID: '345',
                owner_Name: 'Peter'
            },
            car_DateBought: '/Date(1450648800000)/'
        },
        {
            car_Number: '789',
            car_Color: 'green',
            car_Owner: Owner: {
                owner_ID: '567',
                owner_Name: 'Michael'
            },
            car_DateBought: '/Date(1450648800000)/'
        }
    ]
}

Here is some sample code of what I have done so far:

$.ajax({
    type: 'post',
    url: BASE_HREF + 'OpenUI5/GetAllCars',
    success: function (result) {
        var dataForGrid = result['rows'];
        debugger;

        var oModel = new sap.ui.model.json.JSONModel();
        oModel.setData(dataForGrid);

        var oTable = new sap.ui.table.Table({
            selectionMode: sap.ui.table.SelectionMode.Multi,
            selectionBehavior: sap.ui.table.SelectionBehavior.Row,
            visibleRowCountMode: sap.ui.table.VisibleRowCountMode.Auto,
            minAutoRowCount: 10,
            //visibleRowCount: 10,
            showNoData: false
        });

        // define the Table columns and the binding values
        oTable.addColumn(new sap.ui.table.Column({
            label: new sap.ui.commons.Label({
                text: "ID of car"
            }),
            template: new sap.ui.commons.TextView({ text: "{car_Number}" }),
            sortProperty: "car_Number", // https://sapui5.netweaver.ondemand.com/sdk/test-resources/sap/ui/table/demokit/Table.html#__2
            filterProperty: "car_Number"
        }));

        oTable.addColumn(new sap.ui.table.Column({
            label: new sap.ui.commons.Label({ text: "Color of car" }),
            template: new sap.ui.commons.TextView({ text: "{car_Color}" }),
            sortProperty: "car_Color",
            filterProperty: "car_Color"
        }));

        oTable.addColumn(new sap.ui.table.Column({
            label: new sap.ui.commons.Label({ text: "Car Owner ID" }),
            template: new sap.ui.commons.TextView({
            // does not work like this -> text: "{Owner.owner_ID}"
                text: {
                    path: 'Owner',
                    formatter: function (owner) {
                        return owner !== null ? owner['owner_ID'] : '';
                    }
                }
            }),
            sortProperty: "Owner.owner_ID", // these two don't work
            filterProperty: "Owner.owner_ID"
        }));

        oTable.addColumn(new sap.ui.table.Column({
            label: new sap.ui.commons.Label({ text: "Car Owner Name" }),
            template: new sap.ui.commons.TextView({
            // does not work like this -> text: "{Owner.owner_Name}"
                text: {
                    path: 'Owner',
                    formatter: function (owner) {
                        return owner !== null ? owner['Name'] : '';
                    }
                }
            }),
            sortProperty: "Owner.owner_Name", // these two don't work
            filterProperty: "Owner.owner_Name"
        }));

        var dateType = new sap.ui.model.type.Date({ // http://stackoverflow.com/questions/22765286/how-to-use-a-table-column-filter-with-formatted-columns
            pattern: "dd-MM-yyyy"
        });
        oTable.addColumn(new sap.ui.table.Column({
            label: new sap.ui.commons.Label({ text: "Date bought" }),
            template: new sap.ui.commons.TextView({
                text: {
                    path: 'car_DateBought',
                    formatter: dateFormatterBG
                }
            }),
            sortProperty: "car_DateBought",
            filterProperty: "car_DateBought",
            filterType: dateType
        }));

        oTable.setModel(oModel);
        oTable.bindRows("/");
        oTable.placeAt("testTable", "only");
    },
    error: function (xhr, status, errorThrown) {
        console.log("XHR:");
        console.log(xhr);
        console.log("Status:");
        console.log(status);
        console.log("ErrorThrown:");
        console.log(errorThrown);
    }
});

My problems:

1. I cannot sort or filter the list of cars by owner_ID or owner_Name. How should I do the filtering and sorting? Should it be done with the help of a formatter function in some way, or...?

2. I can sort by car_DateBought, but I cannot filter the cars by this field. First, I tried setting filterType: dateType, then I tried setting it to filterType: dateFormatterBG(it turns out, that dateType does exactly the same thing as my own dateFormatterBG does, btw).

    function dateFormatterBG(cellvalue, options, rowObject) { var formatedDate = ''; if ((cellvalue != undefined)) { var date = new Date(parseInt(cellvalue.substr(6))); var month = '' + (date.getMonth() + 1); var day = '' + date.getDate(); var year = date.getFullYear(); if (month.length < 2) { month = '0' + month; } if (day.length < 2) { day = '0' + day; } formatedDate = [day, month, year].join('-'); } return formatedDate; } 

Anyway, as I said, I tried both, but it doesn't work. When I click on the header of a column like in the example in the first link, I don't get any sort of a datepicker. How can I tell OpenUI5, that this column needs to be filtered by date and it should provide the user with a datepicker, when he/she clicks on the 'Filter' input field at the bottom of the dropdown menu? When I try to write the date in the filter field like '07-11-2016' (the way it is formatted), I get an empty table/grid. If I try to enter the huge number from field car_DateBought in the json object, all available rows in the table stay the same and when I reclick on the header, the filter field at the bottom of the dropdown menu appears with error-state.

Thank you in advance for your help and pieces of advice!

Edit: This is just sample, dummy data. I try to load the real data and I see, that in the table I've got a couple of rows with date, which is today (07-11-2016, or 11/7/2016 if you prefer). That's why getting an empty table after trying to filter means it's not working correctly.

Answer 1

Sorting: in a sample I am looking at the following appears in the controller:

    onInit : function () {
        this._IDSorter = new sap.ui.model.Sorter("my_id", false);
    },
    ....

Then in the view there is a button defined in the header column as

        <Column>
            <Label text="Project"/>
            <Button icon="sap-icon://sort" press="onSortID" />
        </Column>

And back in the controller there is a further function:

    onSortID:  function(){
      this._IDSorter.bDescending = !this._IDSorter.bDescending;
      this.byId("table").getBinding("items").sort(this._IDSorter);
    },

I read this collectively as defining a sorter in the onInit(), then toggle/reversing it in the click event of the sort button in the column header via the onSortId() function. The OpenUI5 API doc re sorters indicates there are more parameters in the sorter constructor for initial sort direction and sorting function.

Following this pattern, for your needs to sort on the owner_ID or owner_Name, I assume you could set up a sorter as

this._OwnerIDSorter = new sap.ui.model.Sorter("car_Owner/owner_ID", false);
this._OwnerNameSorter = new sap.ui.model.Sorter("car_Owner/owner_Name", false);