Datatable.Dotnet 1.0.1.3

DataTable Js .Net Core Implementation With Server-Side Processing

This Package is an unofficial easy to use, .Net Core implementation of DataTable.js with built-in support for: Server-Side Pagination, Server-Side Ordering, Server-Side Global and Column Search, Build In DatePicker for Date Columns and Sort.

Note: If you need any help on bootstrapping the package, contract me. I'll be happy to help. Note: If you need any more customization please visit the Github Page For DataTable.Dotnet. Any feature and bug-fix pull request is appreciated.

Configuration

1. Add neessary Javascript and Style libraries from the official website to your web page/ View or _Layout.cshtml.

2. Depending on what type of .Net project you are using, Add these lines of code to the end of .AddMvcControllersWithView() Or AddRazorPages()

For MVC projects:

builder.Services.AddRazorPages().AddMvcOptions(options => {
        options.ModelBinderProviders.Insert(0, new DataTableInputBinderProvider());
});

For Razor Page Projects:

builder.Services.AddControllersWithViews().AddMvcOptions(options => {
    options.ModelBinderProviders.Insert(0, new DataTableInputBinderProvider());
});

3. Add some setting to your appsettings.json file.

  "DataTableSetting": {
    "DefaultPageSize": 25,
    "Header": {
      "OrderAscHtml": "↑",
      "OrderDescHtml": "↓",
      "All": "Show All",
      "DateColumnPluginCall": "$('.date-picker').datepicker();",
      "Checked": "Selected",
      "Unchecked": "Not Selected",
      "OwnSearch": "Search In {0}"
    },
    "Language": {
    "decimal":        "",
    "emptyTable":     "No data available in table",
    "info":           "Showing _START_ to _END_ of _TOTAL_ entries",
    "infoEmpty":      "Showing 0 to 0 of 0 entries",
    "infoFiltered":   "(filtered from _MAX_ total entries)",
    "infoPostFix":    "",
    "thousands":      ",",
    "lengthMenu":     "Show _MENU_ entries",
    "loadingRecords": "Loading...",
    "processing":     "",
    "search":         "Search:",
    "zeroRecords":    "No matching records found",
    "paginate": {
        "first":      "First",
        "last":       "Last",
        "next":       "Next",
        "previous":   "Previous"
    },
    "aria": {
        "sortAscending":  ": activate to sort column ascending",
        "sortDescending": ": activate to sort column descending"
    }

    }
  }

4. In your Program.cs, add DatatableSetting to dependency injection like this:

    builder.Services.Configure<DatatableSetting>(builder
    .Configuration.GetSection("DatatableSetting"));

5. And Finally Add the TagHelper to your _ViewImport.cshtml with the line below.

    @addTagHelper "*, Datatable.Dotnet"

Note: "Datatable.Dotnet" is the assembly name, not the namespace.

Building The Datatable Columns In Controller

The input for TagHelper is an IEnumarable of Column. In order to create that, you can use DatatableColumnBuilder class. Suppose we have a complex ViewModel like this:

    public class ProductViewModel
    {
        public int Id { get; set; }
        public ProductTypeEnum ProductType { get; set; }
        public string Name { get; set; }
        public DateTime Date { get; set; }
        public string Desciption { get; set; }
        public bool Visible { get; set; }
        public virtual IEnumerable<string> ProductTags { get; set; }
    }
    public enum ProductTypeEnum
{
    Book = 1,
    WritingTools,
    Other
}

In your Get() View Method or OnGet() page handler, you can use the DatatableColumnBuilder like this to create a model:

IEnumarable<Columns> input = new DatatableColumnBuilder()
            .AddTextColumn("Identification", nameof(ProductViewModel.Id))
            .AddTextColumn("ProductName", nameof(ProductViewModel.Name))
            .AddTextColumn("Description", nameof(ProductViewModel.Desciption))
            .AddTextColumn("Tags", nameof(ProductViewModel.ProductTags), true, false, false)
            .AddEnumColumn("Type", nameof(ProductViewModel.ProductType),
            new Dictionary<int, string>
            {
                {(int)ProductTypeEnum.Book,"Books" },
                {(int)ProductTypeEnum.WritingTools,"Writing Tools" },
                {(int) ProductTypeEnum.Other,"Other Tools" }
            })
            .AddDateTimeColumn("Date", nameof(ProductViewModel.Date))
            .AddCheckBoxColumn("Visible in Website", nameof(ProductViewModel.Visible), false, "onVisibleClick")
            .AddCustomColumn("Operations", null, "renderButtons", false, false, false)
            .Build();

Column Properties

Note: Remember that this part is not connecting to any database, and It is just creating the columns definitions for passing to tag helper.

Note: you may not need any custom column or checkbox column. It is just here to show your options on creating the list of columns.

Ajax Method

Datatable.Dotnet will call the ajax method that is provided to it. Here is the things you should keep in mind.

Notes:

• For Adding dynamic filter and order to my query, Dynamic Linq is a good option.
• After applying sort and search we are calling ApplyPaginationAsync() which is connecting to database. Use this pattern for minimizing the amount of data returned from the database.

An Ajax Method Example:

public async Task<JsonResult> GetPagedRecords(DataTableInput datatableRequest)
    {
        var records = _db.Products
            .Include(c => c.ProductTags)
            .ThenInclude(c => c.Tag)
            .AsQueryable();

        //Get the total count before filtering. it is needed by datatable
        var totalRecords = await records.CountAsync(); ;

        //Order and search globally and by column
        if (!string.IsNullOrEmpty(datatableRequest.Search))
            records = _queryHelper.ApplyGlobalSearch(records, datatableRequest.Search, globalSearchColumns);
        foreach (var item in datatableRequest.ColumnSearches)
        {
            records = _queryHelper.ApplySearch(records, item.Keyword, item.Field);
        }

        if (datatableRequest.Order != null)
        {
            records = _queryHelper.ApplySort(records, $"{datatableRequest.Order.Column} {datatableRequest.Order.Dir} ");
        }

        //get the total count after filtering and sorting
        var filterdRecordCount = await records.CountAsync();
        //convert your query to a list of <PageSize> item
        var pagedRecord = await _queryHelper.ApplyPaginationAsync(records, datatableRequest.Start, datatableRequest.Length);
        //mappped the Product to ProductViewModel via automapper.
        var mapped = pagedRecord.Records.Select(record => _mapper.Map<ProductViewModel>(record));
        //return the list and some other info as json.
        var result = new JsonResult(new DataTableResult<ProductViewModel>()
        {
            Data = mapped,
            Draw = datatableRequest.Draw,
            RecordsFiltered = filterdRecordCount,
            RecordsTotal = totalRecords
        });
        return result;
    }

Viewing The Results In Page

1. Add a normal empty table with an ID to your page like this:

<table id="products" class="display">
        </table>

2. use this line to initialize. Please note that this tag helper will be converted to a script. So load it after Datatable script and stylesheet (Generally in Script section of your page)

section Script{

<datatable-helper for="@Model.Input" ajax-address="/Products/GetPagedRecords" page-size="25" table-id="products"></datatable-helper>

}

3. If you Added custom columns, Add those definitions at the bottom of the tag-helper.

section Script{


<datatable-helper for="@Model.Input" ajax-address="/Products/GetPagedRecords" page-size="25" table-id="example"></datatable-helper>


<script>
    function renderButtons(data, type, row, meta){
       return  `<div class="btn-group btn-group-sm" role="group" aria-label="Basic example"">
             <button class="btn btn-danger btn-sm">Delete</button>
            <button  class="btn btn-primary btn-sm" onclick="console.log(${row.id})">Edit</button>
    </div>`
    }
    
    function onVisibleClick(row,sender){
        console.log(sender);
        console.log('visibled clicked:'+ row);
    }
</script>
}

Run the project and See the result. Start customizing the table and buttons.