Can you use a 'dynamic' property name to access data from a server repeat?

Wappler General How To
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#1

As the title suggests, i’m trying to test some functionality before building a database import function that relies in the user mapping the fields in the uploaded CSV file to the columns in the relevant database table.

In this test case i have a repeat on the imported CSV file:

image

Usually I could test something by simply outputting a Value and using one of the properties in the repeat data, in this case the data relatinging to the property ‘date’ will be outputted:

image

My questions is though, can I output that same ‘date’ data, but be able to provide the property to output dynamically via other data in the server action:

Such as this:

image
image950×151 10.8 KB

Naturally the above code simply returns the word “date” that it’s getting from a datasource earlier in the server action. But i want to use that text ‘date’ but in reference to the column to return from the repeat data.

Does this make sense? And can it be done?

Thanks

#2 
{{value['date']}}

You can inject the variable inside the square brackets. In the example above I injected a literal string, hence it’s surrounded by ''. value is a variable set by the Repeat step containing the object of the current iteration, as shown in the Data Binding Picker when modifying the Set Value’s expression

1 Like
#3

Thanks for responding. I’m probably missing something, I’m trying what you have noted, using the dynamic value like below, but it’s not even outputting the value ‘tsteingDynamicValue’

image
image1031×228 19 KB

Result in dev console:

{
	"repeat": [
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		},
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		},
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		},
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		},
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		},
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		},
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		},
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		},
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		},
		{
			"dynamicValue": "date",
			"hardCodedValue": "3/06/2021"
		}
	]
}
#4

My mistake, it’s $value instead of value

1 Like
#5

Yes, i just worked that out. Thanks!

This is just what i needed. Much appreciated @Apple

1 Like