There are key problems in many if not most htmlforms involving the distinction between radio buttons and checkboxes. Radio buttons can be used in openMRS when there is a concept with several coded answers to choose from. However, sometimes the concept is 'symptom present' or 'symptom absent' with coded answers for a series of symptoms. The question being asked on the form may be 'does the patient present with a cough?' with the answers 'yes' or 'no.' But, from the system's prospective, it is really two questions: 'Is a cough present?' and 'Is a cough absent?'
Irrelevant Form Sections
Sometimes, on a paper form clinicians record many details about one specific question. A clinician might want to know 'Does the patient present with a cough?' and then 'How long has the cough persisted?' and 'How serious is the cough?' When the form is rendered as an htmlform, there is a possibility that a user will enter impossible data by accident. It is possible for a series of responses to indicate that the patient had 'no cough that persisted for 3 weeks and was extremely serious.'
Using the JQuery library while making slight modifications to the markup we can achieve simple solutions to both these problems. The following script can be copied toward the top of your htmlform.
First, JQuery is included. Next, the script checks to see if JQuery is loaded properly. If so, it proceeds. This means that if there is problem with JQuery, the script will do nothing, and the form will render as it would with no scripting.
Now for an example:
In the physical examination of a form, there is a line for lungs. The possible answers are 'normal,' 'absent,' 'noisy,' and 'crackly.' The rule we need to express: 'normal can be selected OR ANY of the others but not both. Any of the abnormal sounds can be checked, even more than one, but they cannot be checked at the same time as normal. Here is the code:
The following images demonstrate the possible selections:
NOT normal, two selections.
When the script comes across an element with the class 'enableDisable,' it looks for the two child elements with the following IDs: 'trigger', 'disabled.' The first (and preferably only) checkbox in the trigger element will toggle the status of the inputs and style of everything in the 'disabled' element. This means, for the question 'Does the patent have a cough,' 'yes' can be a trigger for more detailed questions to apear. The two solutions can be combined in the following code example and corresponding images.
Note: The use of the span tag is not advised for this feature because it is not supported evenly across all browsers. Specifically, certain versions of internet explorer will not fade transparencies on span elements. The div tag with additional CSS is the preferred method. Td and tr tags are also fine candidates.