Validate a field before submitting

[St0ked56]

Hi,

I am trying to figure out how to validate a input param before the user is allowed submit.  What I want to do is compare the number of inputs into the array to a number variable.  So should validate this:

User input into array = 2 items

Number to verify from = 3 Items

Since numbers don't match an error should pop up. Similar to the "Allow same values" (Attached in picture).  I would want a pop up saying "Please add or subtract a value" or soemthing along those lines.

Can this be done?

Thank you

[cdecanini_]

This can be done using the custom validation presentation property.

To make it easy create an action returning a boolean with an array and a number as input.

return (array.length == arrayLength);

Then use this action for the custom validation property.

Christophe.

[cdecanini_ · Accepted solution]

I forgot something:

To have an error message return a string instead of a boolean with something like that:

if (array.length != arrayLength ) {
     return "Invalid array length, length must be " + arrayLength ;
 }    
 return "";

Christophe.

[St0ked56]

This is probably an error due to my lack of programming experience but this is what I have and the error i am getting.

I created the action "HostnameCheck"

I put 2 variables into this action.  One is an "array/string" and the other is a "number"

This is the script I put in (copied from above)

if (hostname.length != hostnameExpected ) {

     return "Invalid array length, length must be " + hostnameExpected ;

}   

return "";

After I created the action I went into the "Custom Validation" field and found my action and selected it.  This is what is put into the field:

GetAction("com.x.library.fullname","HostnameCheck").call(  , __NULL__ )

When I run the workflow I have this error at the bottom of the screen and unable to select "Submit" (See Pic)

This error stays there regardless if the array matches the number

[cdecanini_]

When you set the action for the validation property you need to set its parameters so it will create the string:

GetAction("com.x.library.fullname","HostnameCheck").call(#hostname  , #hostnameExpected);

From your string it seems you missed this step.

Christophe.