How to Preset Field Values on a Form

Use this technique to populate a field before the user views the form or to populate a hidden field. This is commonly done when calling subforms to pass values from the parent to the subform.

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Warning! If the field specified does not exist on the form, you will receive a 500 error when the URL attempts to prepopulate the field.

Create a URL to the form that has the parameter ?values[FieldName]=VALUE appended to the end. (the ? starts a query string and the & is used to append multiple parameters). Note that the name and value must be escaped (to account for special characters).

For example, loading a requested for subform may have a URL that looks like this:

K('kapp').slug()+'/requested-for?values[Login%20Id]='+identity('username')

This would populate a field called Login Id with the login user's username.

Keep in mind that many servers have a limit to the length of a URL. It is impractical and potentially problematic to set long text fields in this manner.