Announcement

**Isomorphic** · 12 Jul 2012, 07:49

No, we don't store off a parallel array of the unsorted data anywhere.

**acarur01** · 12 Jul 2012, 07:50

Well, do you have any suggestions on how to get around this? We don't really want to send the valuemaps for every single record when they are exactly the same - our value maps can be quite lengthy

**Isomorphic** · 12 Jul 2012, 07:52

We've mentioned a few times that your strategy doesn't match what's recommended in the docs, it's a kind of "worst of both worlds" that introduces the complexity of a valueMap embedded in the data, while not handling large valueMaps efficiently. See listGridField.optionDataSource for the recommended approach.

**acarur01** · 1 Aug 2012, 08:42

OK. Trying this optionDataSource approach - how do I catch the request before it is sent to the server so that I can add my own criteria? I want to add the record key to pass to the server. Also, how do I force it to fetch for every record that goes into edit mode? It looks like the optionDataSource fetch is only executed on the first edit. getEditorValueMap is called every time but do you recommended doing the custom fetch there?

**Isomorphic** · 1 Aug 2012, 09:15

Override SelectItem.getPickListFilterCriteria() - see the DataBound Dependent Selects examples for sample code.

If the criteria are the same, you will not see a new fetch, so changing the criteria per-record should solve that issue too.

No, do not attempt a fetch from getEditorValueMap.

**acarur01** · 1 Aug 2012, 09:50

I see how this can work - but how do I get access to the current record in edit mode? I would need to find the listgrid via global ID and get the currently editing row?

**Isomorphic** · 1 Aug 2012, 09:58

See the DataBound Dependent Selects example. It accesses the record values in order to get the value for another field.

**acarur01** · 1 Aug 2012, 10:00

whoops thanks - was looking at the wrong example.

**acarur01** · 1 Aug 2012, 11:19

Here's what I got so far. I have a sample of a listgrid with one dropdown. I have the optionDataSource bound to "optionDs" BUT it only works if I have the data like testEnum2 - I want to work with testEnum where I have the key/value pair- otherwise I'm not sure how to get the actual key instead of the description (value).

Code:

isc.ListGrid.create({
    ID: "countryList",canEdit:true,
    width:500, height:224, alternateRecordStyles:true, 
    dataSource: countryDS,
    fields: [{name: "countryName", optionDataSource: "optionDs"}],
    autoFetchData: true
})

//listgrid ds

isc.DataSource.create({
    ID: "countryDS",
    fields:[
        {name:"countryName", title:"Country"},
        {name:"countryCode", title:"Code"},
        {name:"independence", title:"Independence", type:"date"},
        {name:"population", title:"Population", type:"integer"},
        {name:"gdp", title:"GDP ($B)", type:"float"}
    ],
    clientOnly: true,
    testData: countryData
})

//optionDataSource

var   testEnum = [
            {
                countryName:{
                    "1":"test1", 
                    "2":"test2", 
                    "3":"test3"
                }
            }
        ];

var   testEnum2 = [
            {countryName:"test1"},
            {countryName: "test2"},
            {countryName:"test3"}
               ];
			   

isc.DataSource.create({
ID:"optionDs",
fields:[{name:"testEnum"}],
clientOnly:true,
testData:testEnum2
});

**Isomorphic** · 1 Aug 2012, 11:35

The data for the DataSource should be standard Records, not some kind of nested structure. So each should be a JavaScript Object with an id field and a display field. You tell the optionDataSource which fields to use via selectItem.valueField and displayField.

Announcement

ListGrid.getOriginalData()

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