is there a way to auto adjust widths in ng-grid? - ng-grid

Question

I'm having trouble with widths of my columns. I don't know what width they will be beforehand, nor do I want to specify each column's width. Is there an attribute that I can use that auto adjusts all the column widths based on the content (including the column header)?

Answer 1

Woot! I came up with a pretty cool answer! Setting the width to "auto" was really not working for me. Maybe it is because I'm using an ng-view? Not sure. So I created 2 new functions you can put in your controller.js. Using them like this will give you computed column widths! Read the code comments; there are some caveats.
Example usage, controllers.js:
var colDefs = makeColDefs(rows[0]);
colDefs = autoColWidth(colDefs, rows[0]);
$scope.phones = rows;
$scope.gridOptions = {
data : 'phones',
showFilter : true,
enableColumnResize : true,
columnDefs : colDefs
};
The code, controllers.js:
/**
* Create a colDefs array for use with ng-grid "gridOptions". Pass in an object
* which is a single row of your data!
*/
function makeColDefs(row) {
var colDefs = [];
for ( var colName in row) {
colDefs.push({
'field' : colName
});
}
return colDefs;
}
/**
* Return a colDefs array for use with ng-grid "gridOptions". Work around for
* "auto" width not working in ng-grid. colDefs array will have percentage
* widths added. Pass in an object which is a single row of your data! This
* function does not do typeface width! Use a fixed width font. Pass in an
* existing colDefs array and widths will be added!
*/
function autoColWidth(colDefs, row) {
var totalChars = 0;
for ( var colName in row) {
// Convert numbers to strings here so length will work.
totalChars += (new String(row[colName])).length;
}
colDefs.forEach(function(colDef) {
var numChars = (new String(row[colDef.field])).length;
colDef.width = (numChars / totalChars * 100) + "%";
});
return colDefs;
}
Jasmine test, controllerSpec.js:
'use strict';
var ROW = {
'col1' : 'a',
'col2' : 2,
'col3' : 'cat'
};
var COLUMN_DEF = [ {
field : 'col1'
}, {
field : 'col2'
}, {
field : 'col3'
} ];
var COLUMN_DEF2 = [ {
field : 'col1',
width : '20%'
}, {
field : 'col2',
width : '20%'
}, {
field : 'col3',
width : '60%'
} ];
/* jasmine specs for controllers go here */
describe('controllers', function() {
beforeEach(module('myApp.controllers'));
it('should make an ng-grid columnDef array from a row of data.',
function() {
expect(makeColDefs(ROW)).toEqual(COLUMN_DEF);
});
it('should return an ng-grid columnDef array with widths!', function() {
var colDefs = makeColDefs(ROW);
expect(autoColWidth(colDefs, ROW)).toEqual(COLUMN_DEF2);
});
});

Answer 2

Use ui-grid, is must better: http://ui-grid.info/docs/#/tutorial/204_column_resizing
but https://github.com/angular-ui/ng-grid/wiki/Configuration-Options

Answer 3

This works:
$scope.gridOptions = {
init: function (gridCtrl, gridScope) {
gridScope.$on('ngGridEventData', function () {
$timeout(function () {
angular.forEach(gridScope.columns, function (col) {
gridCtrl.resizeOnData(col);
});
});
});
},
data: 'scopeDataField',
columnDefs: [
{
field: 'property1',
displayName: 'property1title',
width: '100px' // a random fixed size, doesn't work without this
},
{
field: 'property2',
displayName: 'property2title',
width: '100px'
}
],
enableColumnResize : true
};

Answer 4

See answer at https://stackoverflow.com/a/32605748/1688306
Column width calculated by column name or datum, whichever is longer.

Answer 5

Yes! In your columndefs you can set the width to auto and this will automatically size the columns based on the width of the data and/or header.
Reference: Defining Columns

Answer 6

I am using ui-grid. The following code is working for me. You can try this.
First you need to add a module dependency 'ui.grid.autoResize' in your main module.
Then add css class something like this
.grid {
width : 400px !important;
max-width : 400px !important;
height : 600px !important;
}
And finally add the ui-grid directive in your html file like this. Keep in mind don't forgot to add the 'ui-grid-auto-resize' in your grid directive.
<div id="grid1" ui-grid="gridOptions" class="grid" ui-grid-auto-resize></div>