Skip to main content
Announcements
Have questions about Qlik Connect? Join us live on April 10th, at 11 AM ET: SIGN UP NOW
cancel
Showing results for 
Search instead for 
Did you mean: 
stascher
Partner - Creator II
Partner - Creator II

Custom property expression not persisting.

I've created an extension in which I want users to be able to enhance their Measures by entering an expression string to specify, in this case, a color value. For example, "= if (count(foo)>10,vRed,vGreen)".

I've got the expression field displaying okay using the following:

 

definition: {
	type: "items",
	component: "accordion",
	items: {
		dimensions: {
			uses: "dimensions",
			min: 2,
			max:2
		},
		// measure value is either bar/line length or type of point object
		measures: {
			uses: "measures",
			min: 1,
			max: 6,
			type:"items",
			items: {
				VisualType: {
					type: "string",
					component:"dropdown",
					label: "Visual Type",
					ref: "qDef.visualType",
					options: [{
						value: "BAR",
						label: "Bar"
					},{
						value: "LINE",
						label: "Line"
					},{
						value: "POINT",
						label: "Point"
					}],
					defaultValue: "BAR"
				},
				// this evaluates to a number for each row.. qAttrExps.qValues[0].qNum
				ColorExp: {
					type:"string",
					label:"Color Expression",
					ref:"qAttributeExpressions.0.qExpression",
					expression:"always",
					defaultValue:""
				}
			}
		},
		sorting: {
			uses: "sorting"
		},
		appearance: {  
			uses: "settings",
			type: "items",
			items: { ....

 

The problem is that after specifying the expression string, if I go back into Edit mode, the expression is blank.

I've tried removing the defaultValue line but that didn't have an effect.

Am I missing a step or attribute required to make the expression persist?

Thanks,
Steve

Labels (2)
1 Reply
stascher
Partner - Creator II
Partner - Creator II
Author

Looks like I need to use component:"expression", instead of expression:"always".