For some parameters, one does not wish to allow an arbitrary string, but wishes to rather limit input to one of a small number of alternatives. These parameters should be specified to be of type ChooseOne, and the object containing the parameter must have two additional members:
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Using the ChooseOne parameter type, we can enhance the previous example to limit the business unit to be one of a small number of predefined values:
var workflow = { name: 'Create share', description: 'Creates a new share in a business unit', parameters: { name: { label: 'Name of new share', type: 'String' }, unit: { label: 'Business unit', type: 'ChooseOne', options: [ 'development', 'finance', 'qa', 'sales' ], optionlabels: [ 'Development', 'Finance', 'Quality Assurance', 'Sales/Administrative' ], } }, execute: function (params) { run('shares select ' + params.unit); run('filesystem ' + params.name); run('commit'); return ('Created new share "' + params.name + '"'); } };
When this workflow is executed, the unit parameter will not be entered by hand -- it will be selected from the specified list of possible options.