Re: error loading root children

>
> With the ItemFileReadStore, you can explorer this type of construct:
>
> my_date: {"_type":"Date","_value":"2037-06-30"}
>
> instead of
>
> my_date: "2037-06-30"
>
> I might be wrong, but it should work with objects as well as long as you
> define the type handler (Date here) but it is currently not supported by
> all store, ItemFileReadStore does.
>
> Another alternative (not very cute), is to encode the object to json
> such as it become a string and decode it when you retrieve the value
> from the store.
>
> d.
>
>
> Jared Jurkiewicz a écrit :
>> A nested object in an item is treated as another item.  See:
>> http://docs.dojocampus.org/dojo/data/ItemFileReadStore#items-with-hierarchy.
>>  In this case, you declare the identifier, then have an item that
>> doesn't have an identifier.  The load of that structure will fail in
>> the store.
>>
>> -- Jared
>>
>> On Sun, Oct 5, 2008 at 4:12 PM, Greg Ederer <greg@...> wrote:
>>
>>> Hi,
>>>
>>> I use the JSON below to create an ItemFileReadStore, which I then use to
>>> create a ForestStoreModel, which I use to create a Tree.  When I leave
>>> out the 'months' property in the item with 'name' : 'RFE', it works
>>> perfectly.  But, when 'months' refers to an {}, I get the following error:
>>>
>>>  [Widget dijit.Tree, dijit_Tree_0] _connects=HTMLDivElement
>>> _deferredConnects=Object : error loading root children:  TypeError: _48
>>> is undefined message=_48 is undefined
>>>
>>> I've tried using:
>>>
>>> {
>>>    'name' : 'RFE',
>>>    'type' : 'dataset',
>>>    'periodicities' : [ 'daily', 'dekadal', 'monthly' ],
>>>    'selectedPeriodicity' : 'monthly',
>>>    'units' : [ 'raw', 'percent', 'zscore', 'mmdifference', 'spi' ],
>>>    'selectedUnits' : 'raw',
>>>    'months' : {}
>>>  }
>>>
>>> as a test, and this doesn't work, either.  Is it permissible to have a
>>> nested object in an item?
>>>
>>> Here's the complete JSON:
>>>
>>> {
>>>  identifier : 'name',
>>>  label : 'name',
>>>  items : [
>>>  {
>>>    'name' : 'All Africa',
>>>    'type' : 'region',
>>>    'children': [
>>>    {
>>>      '_reference' : 'RFE'
>>>    },
>>>    {
>>>      '_reference' : 'TPW'
>>>    },
>>>    {
>>>      '_reference' : 'NDVI'
>>>    },
>>>    {
>>>      '_reference' : 'WRSI'
>>>    }
>>>    ]
>>>  },
>>>  {
>>>    'name' : 'East Africa',
>>>    'type' : 'region',
>>>    'children': [
>>>    {
>>>      '_reference' : 'RFE'
>>>    },
>>>    {
>>>      '_reference' : 'TPW'
>>>    },
>>>    {
>>>      '_reference' : 'NDVI'
>>>    },
>>>    {
>>>      '_reference' : 'WRSI'
>>>    }
>>>    ]
>>>  },
>>>  {
>>>    'name' : 'West Africa',
>>>    'type' : 'region',
>>>    'children': [
>>>    {
>>>      '_reference' : 'RFE'
>>>    },
>>>    {
>>>      '_reference' : 'TPW'
>>>    },
>>>    {
>>>      '_reference' : 'NDVI'
>>>    },
>>>    {
>>>      '_reference' : 'WRSI'
>>>    }
>>>    ]
>>>  },
>>>  {
>>>    'name' : 'South Africa',
>>>    'type' : 'region',
>>>    'children': [
>>>    {
>>>      '_reference' : 'RFE'
>>>    },
>>>    {
>>>      '_reference' : 'TPW'
>>>    },
>>>    {
>>>      '_reference' : 'NDVI'
>>>    },
>>>    {
>>>      '_reference' : 'WRSI'
>>>    }
>>>    ]
>>>  },
>>>  {
>>>    'name' : 'RFE',
>>>    'type' : 'dataset',
>>>    'periodicities' : [ 'daily', 'dekadal', 'monthly' ],
>>>    'selectedPeriodicity' : 'monthly',
>>>    'units' : [ 'raw', 'percent', 'zscore', 'mmdifference', 'spi' ],
>>>    'selectedUnits' : 'raw',
>>>    'months' : {
>>>      '2003' : 'all',
>>>      '2004' : 'all',
>>>      '2005' : 'all',
>>>      '2006' : 'all',
>>>      '2007' : 'all',
>>>      '2008' : [ '1', '2', '3', '4', '5', '6', '7' ]
>>>    }
>>>  },
>>>  {
>>>    'name' : 'TPW',
>>>    'type' : 'dataset',
>>>    'periodicities' : [ 'daily', 'dekadal' ],
>>>    'selectedPeriodicity' : 'dekadal',
>>>    'units' : [ 'raw', 'percent' ],
>>>    'selectedUnits' : 'percent'
>>>  },
>>>  {
>>>    'name' : 'NDVI',
>>>    'type' : 'dataset',
>>>    'periodicities' : [ 'daily', 'monthly' ],
>>>    'selectedPeriodicity' : 'daily',
>>>    'units' : [ 'raw', 'percent', 'spi' ],
>>>    'selectedUnits' : 'spi'
>>>  },
>>>  {
>>>    'name' : 'WRSI',
>>>    'type' : 'dataset',
>>>    'periodicities' : [ 'dekadal', 'monthly' ],
>>>    'units' : [ 'raw', 'percent', 'zscore', 'spi' ],
>>>    'selectedUnits' : 'zscore'
>>>  }
>>>  ]
>>> }
>>>
>>> Any thoughts?
>>>
>>> Thanks!
>>>
>>> Greg
>>>
>>> --
>>> | E R G O N O S I S
>>> | Greg Ederer
>>> | Lead Developer
>>> | greg@...
>>> | 360.774.6848
>>> |
>>>
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>
>
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