Datatables - Setting column width

Question

I'm trying to set up width of columns as shown below:

 var per_page = $("table").data("per_page");
  $(".table").dataTable({
    "aoColumnDefs": [
      { "sWidth": "100px", "aTargets": [ 1 ] },
      { "sWidth": "100px", "aTargets": [ 2 ] },
      { "sWidth": "100px", "aTargets": [ 3 ] },
      { "sWidth": "100px", "aTargets": [ 4 ] },
      { "sWidth": "100px", "aTargets": [ 5 ] },
      { "sWidth": "100px", "aTargets": [ 6 ] },
      { "sWidth": "100px", "aTargets": [ 7 ] }
    ],
    "aoColumns" : [
      { "sWidth": "100px"},
      { "sWidth": "100px"},
      { "sWidth": "100px"},
      { "sWidth": "100px"},
      { "sWidth": "100px"},
      { "sWidth": "100px"},
      { "sWidth": "100px"},
      { "sWidth": "100px"},
    ],
    bJQueryUI: true,
    iDisplayLength: per_page,
    "fnDrawCallback": function( oSettings ) {
      if (oSettings._iDisplayLength == per_page)
        return true
      else {
        $.post($(this).data("url"), {iDisplayLength: oSettings._iDisplayLength})
          .done(function(data){
            if (data.success)
              per_page = oSettings._iDisplayLength;
          });
      }
    }
  })

But resulting column width is not that i'm trying to set. could you help me please?

Update 1

I've updated my initialization code as follows, but bumped into strange behavior on IE 9: Ie takes the longest field, devides it into lines , and takes it's length as default for all rows of this column.

  var per_page = $("table").data("per_page");
  $(".table").dataTable({
    sScrollX: "100%",
    aoColumns : [
      { "sWidth": "15%"},
      { "sWidth": "15%"},
      { "sWidth": "15%"},
      { "sWidth": "15%"},
      { "sWidth": "15%"},
      { "sWidth": "15%"},
      { "sWidth": "15%"},
    ],
    bJQueryUI: true,
    iDisplayLength: per_page,
    "fnDrawCallback": function( oSettings ) {
      if (oSettings._iDisplayLength == per_page)
        return true
      else {
        $.post($(this).data("url"), {iDisplayLength: oSettings._iDisplayLength})
          .done(function(data){
            if (data.success)
              per_page = oSettings._iDisplayLength;
          });
      }
    }
  })

Update 2
I've updated code as shown below, the result in ie 9 is that the heading of the datatable is resized to new size, but the rest of the table is untouched by changes , see screenshot http://gyazo.com/282967b051366b18634d4e778205c938 init code:

  var per_page = $("table").data("per_page");
  var datTable = $(".table").dataTable({
    sScrollX: "100%",
    sScrollX: "500px",
    aoColumnDefs: [
          { bSortable: false, aTargets: [ 4, 5,6 ] },
          { sWidth: "16%", aTargets: [  1, 2,3,4,5,6 ] },
    ],
    bJQueryUI: true,
    sAutoWidth: false,
    iDisplayLength: per_page,
    "fnDrawCallback": function( oSettings ) {
      if (oSettings._iDisplayLength == per_page)
        return true
      else {
        $.post($(this).data("url"), {iDisplayLength: oSettings._iDisplayLength})
          .done(function(data){
            if (data.success)
              per_page = oSettings._iDisplayLength;
          });
      }
    }
  })

How can I fix this behavior ?

Answer 1

I see in your Update 2 that you have use sAutoWidth, but I think you mistyped bAutoWidth. Try to change this.

You can also add a CSS rule to .table if the problem persists.

You should also be careful when the width of the content is greater than the header of the column.

So something like the combination of the 1 & 2:

$('.table').dataTable({
  bAutoWidth: false, 
  aoColumns : [
    { sWidth: '15%' },
    { sWidth: '15%' },
    { sWidth: '15%' },
    { sWidth: '15%' },
    { sWidth: '15%' },
    { sWidth: '15%' },
    { sWidth: '10%' }
  ]
});