Custom adaptor for auto complete

[Paul Skelton]

I see that the latest version support custom adaptors but I can't find any documentation and haven't figured out how to make one.  I have a business object that returns the data I need and no web api.  I'd like to write a custom adaptor to interact with my business object and return results.  But how?

[Gopi Govindasamy]

Hi Paul,  

We have checked your requirement for “custom adaptors with autocomplete component”. We have prepared sample for custom adaptor to load the datasource into autocomplete component. Please find the sample and code snippet for your reference. 

<EjsAutoComplete TValue="string"> 

    <EjsDataManager AdaptorInstance="@typeof(CustomAdaptor)" Adaptor="Adaptors.CustomAdaptor"></EjsDataManager> 

    <AutoCompleteFieldSettings Value="CustomerID"></AutoCompleteFieldSettings> 

</EjsAutoComplete> 

 

@code{  

 

    public class Orders 

    { 

        public Orders() { } 

        public Orders(int OrderID, string CustomerID) 

        { 

            this.OrderID = OrderID; 

            this.CustomerID = CustomerID; 

        } 

        public int OrderID { get; set; } 

        public string CustomerID { get; set; } 

    } 

    public class CustomAdaptor : DataAdaptor 

    { 

        static readonly HttpClient client = new HttpClient(); 

        public static List<OrdersDetails> order = OrdersDetails.GetAllRecords(); 

        public override object Read(DataManagerRequest dm, string key = null) 

        { 

            IEnumerable<OrdersDetails> DataSource = order; 

            if (dm.Search != null && dm.Search.Count > 0) 

            { 

                DataSource = DataOperations.PerformSearching(DataSource, dm.Search);  //Search 

            } 

            if (dm.Sorted != null && dm.Sorted.Count > 0) //Sorting 

            { 

                DataSource = DataOperations.PerformSorting(DataSource, dm.Sorted); 

            } 

            if (dm.Where != null && dm.Where.Count > 0) //Filtering 

            { 

                DataSource = DataOperations.PerformFiltering(DataSource, dm.Where, dm.Where[0].Operator); 

            } 

            int count = DataSource.Cast<OrdersDetails>().Count(); 

            if (dm.Skip != 0) 

            { 

                DataSource = DataOperations.PerformSkip(DataSource, dm.Skip);         //Paging 

            } 

            if (dm.Take != 0) 

            { 

                DataSource = DataOperations.PerformTake(DataSource, dm.Take); 

            } 

            return dm.RequiresCounts ? new DataResult() { Result = DataSource, Count = count } : (object)DataSource; 

       } 

    } 

} 

Sample Link: https://www.syncfusion.com/downloads/support/forum/146858/ze/customadaptor-119564086  

We will include this custom adaptor document in our UG, which will be available at the end of August 2019.  

Regards,
Gopi G.