Flex Datagrid to Array

apache-flexarrays

I need to convert a datagrid table in Adobe Flex to an ArrayCollection. I was expecting to be able to loop through each row of a datagrid and write that to the Array collection, but the only method for accessing data in the datagrid that I can find is SelectedItem, which doesn't help me.

Obviously one could just copy the dataProvider for the datagrid, but my datagrid is editable and I need to store the state of the datagrid at any one time into a database. Can anyone recommend a method of doing this?

Much Appreciated

-Matt

Best Answer

If your DataGrid is:

<mx:DataGrid id="someDG" dataProvider="{this.provider}" />

Then check if this.provider is Array or ArrayCollection. If it is ArrayCollection then access it simply by:

var gotIt:ArrayCollection = this.someDG.dataProvider as ArrayCollection;

if it is an Array, then:

var gotIt:ArrayCollection = new ArrayCollection(this.someDG.dataProvider as Array);

Hope this helps.

Related Solutions

Java – Create ArrayList from array

new ArrayList<>(Arrays.asList(array));

Javascript – How to check if an array includes a value in JavaScript

Modern browsers have Array#includes, which does exactly that and is widely supported by everyone except IE:

console.log(['joe', 'jane', 'mary'].includes('jane')); //true

You can also use Array#indexOf, which is less direct, but doesn't require polyfills for outdated browsers.

console.log(['joe', 'jane', 'mary'].indexOf('jane') >= 0); //true

Many frameworks also offer similar methods:

jQuery: $.inArray(value, array, [fromIndex])
Underscore.js: _.contains(array, value) (also aliased as _.include and _.includes)
Dojo Toolkit: dojo.indexOf(array, value, [fromIndex, findLast])
Prototype: array.indexOf(value)
MooTools: array.indexOf(value)
MochiKit: findValue(array, value)
MS Ajax: array.indexOf(value)
Ext: Ext.Array.contains(array, value)
Lodash: _.includes(array, value, [from]) (is _.contains prior 4.0.0)
Ramda: R.includes(value, array)

Notice that some frameworks implement this as a function, while others add the function to the array prototype.

Much Appreciated

Best Answer

Related Solutions

Java – Create ArrayList from array

Javascript – How to check if an array includes a value in JavaScript

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