On Feb 19, 2010, at 7:46 PM, Pascal Robert wrote:
I'm trying to hide some text if an array is empty, so I tried this :
<wo:WOConditional condition =
"$member.organizationProfiles.isEmpty">
But I'm getting :
<org.wocommunity.logic.eof.OrganizationProfile 0x40964823>
valueForKey(): lookup of unknown key: 'isEmpty'. This class does not
have an instance variable of the name isEmpty or _isEmpty, nor a
method of the name isEmpty, _isEmpty, getIsEmpty, or _getIsEmpty
Why it's trying to find isEmpty on a OrganizationProfile instead of
the array (which is populated with OrganizationProfile objects)?
See the valueForKey docs on NSArray:
For keys which do not begin with "@", valueForKey creates a new array
with the same number of elements as this array. For each element, the
corresponding element in the new array is the result of invoking
valueForKeyPath with key as the key path on the element. For example,
if key is "firstName", this method returns an array containing the
firstName values for each of the array's elements. The key argument
can be a key path of the form relationship.property. For example,
"department.name". valueForKey replaces null values with an instance
of NSKeyValueCoding.Null.
$member.organizationProfiles.isEmpty results in an array filled with
the result of anOrganizationProfile.isEmpty
Chuck
So far, the only way I found to check if it's empty with non-Java
code was with :
OrgsProCondition : WOConditional {
condition = member.organizationsprofil...@count > 0;
negate = true;
}
I also tried with :
<wo:WOConditional condition = "$member.organizationprofil...@count
> 0">
But I get a "has a quote left open", and using > didn't help.
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