Collection Protocol

In OpenSpecimen, it is possible to add custom fields at the CP level. This feature was introduce introduced to facilitate capturing additional information at the study level. Only one custom form can be attached at the CP custom field level. So this form must have fields required for all the CPs.

Using skip logic in the custom forms, one can show/ hide these fields based on the site selected in the CP site dropdown or the site code.

Use Case 1: Show a custom field based on the site or site code selected in the CP site dropdown.

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<showWhen><![CDATA[$extendedObj.cpSites.siteName = "Arkansas Repository"]]></showWhen>

Image Added When the site ‘Arkansas Repository' is not selected:

Image Added When the site ‘Arkansas Repository' is added

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: Image Added The field display can also be configured based on the site code, like below: Code Block language xml <showWhen><![CDATA[$extendedObj.cpSites.code = "AR"]]></showWhen> Image Added The field will be displayed only when the user enters the site code as 'AR': Image Added

Use Case 2: Show a custom field based on the CP Short Title.

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Code Block language xml <showWhen><![CDATA[$extendedObj.cpShortTitle = "ASS12"]]></showWhen> Image Added The form is attached at the specimen custom field level for 2 CPs. When the showWhen condition is satisfied the field will be visible i.e for all the specimens in the ASS12 CP the field ‘Did you fast today?' will be visible Image Added Whereas for the other CP, the additional fields section is blank. Image Added You can also add multiple CPs in the condition if you wish to show this field for only 2 CPs. Code Block language xml <showWhen><![CDATA[$extendedObj.cpShortTitle = "ASS12" or $extendedObj.cpShortTitle = "LSC"]]></showWhen> Please note that both the CPs mentioned here did not have any JSON attached

Orders

Since the order level custom fields are not a standalone form and are used in conjunction with the order fields, you need to use a different syntax.

Use case: The field ‘Courier Name' should only be displayed if the value for ‘Distributed Offsite’ field is 'Yes’

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Code Block language xml <showWhen><![CDATA[order.extensionDetail.attrsMap.distributed_offsite == "Yes"]]></showWhen> Image Added If 'No' is selected, the field is not displayed: Image Added If ‘Yes' is selected, the 'Courier Name’ field is displayed: Image Added