Align gridster items using row and col values angularjs

Question

I have created a dashboard using angularjs, kendoui charts and angular gridster (https://github.com/ManifestWebDesign/angular-gridster).

So I have a function to add a gridster with chart like below :-

// add widget to a dashboard
$scope.addWidget = function () {
  
  // new widget configuration
  var newWidget = {
    id: $scope.allWidgetData.selectedOption.id,
    data_source: {},
    config: {
      name: $scope.allWidgetData.selectedOption.name,
      sizeX: 3,
      sizeY: 2,
      row: $scope.row,
      col: $scope.col
    }  
  };
}

// make api call and save data

I can save this object to backend and get the values too. I am setting row and col values for each chart as follows as the sizeX and sizeY values are constant as 3 and 2.

1. First chart row:0 and col:0
2. Second chart row:0 and col:3
3. Third chart row:2 and col:0
4. Fourth chart row:2 and col:3

I referred and searched for solution on below pages :-

1. Save gridster layout using angularjs

2. https://github.com/ManifestWebDesign/angular-gridster

So now my HTML is like below so I set row and col values:-

<div gridster="gridsterOptions" ng-if="isShowing(index)">
    <ul>
        <li gridster-item="widget" ng-repeat="widget in widgetData.availableOptions" row="widget.config.row" col="widget.config.col" style="overflow:hidden;" >
            <div class="box">                         

            // kendo ui chart in  div
        </li>
    </ul>       
</div> 

My gridster configuration is like below :-

$scope.gridsterOptions = {
      minRows: 2, // the minimum height of the grid, in rows
      maxRows: 100,
      columns: 6, // the width of the grid, in columns
      colWidth: 'auto', // can be an integer or 'auto'.  'auto' uses the pixel width of the element divided by 'columns'
      rowHeight: 'match', // can be an integer or 'match'.  Match uses the colWidth, giving you square widgets.
      margins: [10, 10], // the pixel distance between each widget
      defaultSizeX: 3, // the default width of a gridster item, if not specifed
      defaultSizeY: 2, // the default height of a gridster item, if not specified
      mobileBreakPoint: 600, // if the screen is not wider that this, remove the grid layout and stack the items
      swapping: false,
      pushing: true,
      floating: false,
      resizable: {
          enabled: true,
          start: function(event, uiWidget, $element) {}, // optional callback fired when resize is started,
          resize: function (event, uiWidget, $element) {
          }, // optional callback fired when item is resized,
          stop: function(event, uiWidget, $element) {
          } // optional callback fired when item is finished resizing
      },
      draggable: {
         enabled: true, // whether dragging items is supported
         handle: '.box-header', // optional selector for resize handle
         start: function(event, uiWidget, $element) {}, // optional callback fired when drag is started,
         drag: function(event, uiWidget, $element) {}, // optional callback fired when item is moved,
         stop: function(event, uiWidget, $element) {          
        } // optional callback fired when item is finished dragging
      }
  };  

When I get the gridster items from backend they are in random order and gridster does not align them as per row and col values.

Answer 1

I created a working pen for you how to do this: https://codepen.io/shnigi/pen/JLVZpK

I had a similar problem, this is how I tackled it. Make sure you are referencing to right object value. You may also have to set positions when your ajax call is ready:

<li ng-repeat="widget in widgets"
          class="panel" gridster-item
          row="widget.posY"
          col="widget.posX"
          size-x="widget.width"
          size-y="widget.height">
        <div class="panel-heading">
          <h3 class="panel-title">{{widget.title}}</h3>
        </div>
</li>

Mobile breakpoints are also issue as you set the widget position and then you may have different resolution. So what I did here is that I am now using this fork:

https://github.com/arkabide/angular-gridster

I count the columns based on resolution and have "dynamic" columns turned on.

$scope.gridsterOptions = {
  resizable: {
    enabled: false,
  },
  floating: true,
  pushing: true,
  swapping: true,
  isMobile: true,
  mobileBreakPoint: 768,
  columns: getColumns(),
  dynamicColumns: true,
  minWidthToAddANewColumn: 255,
  rowHeight: 400,
  draggable: {
    enabled: true,
    handle: '.panel-heading'
  }
};

const getColumns = () => {
  const browserWidth = $window.innerWidth;
  if (browserWidth < 1300) {
    return 3;
  } else if (browserWidth < 1500) {
    return 4;
  } else if (browserWidth < 1700) {
    return 5;
  }
  return 6;
};

There are some issues with the widget positioning if resolution changes, but this is the best solution I have got so far.

So make sure you load all data before assigning it using promises. Pseudo code like this:

const loadedWidgets = [];
    if (settings) {
      const loadAllWidgets = () => new Promise(resolve =>
          loadedWidgets.push(widget);
          resolve();
        }));

  const actions = settings.chartsettings.map(loadAllWidgets);
  Promise.all(actions).then(() => {
    const widgetList = loadedWidgets.map(widget => widget);
    $scope.widgets = widgetList;
  });
}

I guess your issue is related to object referencing or you are not setting position with promises. You can also try the fork I am using. Because for me this setup works and the widgets appear where I save them.