If I understand correctly, the user must actually enter a patient id in a
form in the first component, correct? If that's the case, then you should
not use LOAD() for the third component, as LOAD() automatically loads the
component as soon as the parent page has loaded. Instead, you want to
trigger the third component to load after the user submits the patient id
in the first component. To do that, you can leave the div for the third
component empty:
<div id="patient_scan_history" class="layout_block"></div>
Then, in the patient_details() function, you can return some Javascript
that will trigger the third component to be loaded after the form has been
submitted:
def patient_details():
...
if form.process().accepted:
...
response.js = 'web2py_component("%s", "patient_scan_history");' %URL
('default', 'patient_scan_history.load')
...
return dict(...)
When the form is submitted and the patient id has been saved to the
session, the patient_details() function adds some Javascript to
response.js, which will be executed in the browser when the Ajax call
completes. The Javascript calls the patient_scan_history() component and
loads its contents into the "patient_scan_history" div.
Anthony
On Tuesday, April 23, 2013 8:42:39 AM UTC-4, AnnG wrote:
>
> Hi,
> I have a main patient input page with 3 components on...
>
> <div id="content">
> <div id="patient_info" class="layout_block">
> {{=LOAD('patient', 'patient_details.load', ajax=True,
> target='patient_info')}}
> </div>
> <div id="phenotype_form" class="layout_block">
> {{=LOAD('phenotype_form', 'phenotype_form.load', ajax=True,
> target='phenotype_form')}}
> </div>
> <div id="patient_scan_history" class="layout_block">
> {{=LOAD('patient_scan_history', 'patient_scan_history.load',
> ajax=True, target='patient_scan_history')}}
> </div>
> </div>.
>
> ...and to work properly, 2 of those components (the first and third above)
> need a patient id, which is held in an input box (id="patient_id") on a
> form, in patient_details.load (first component above) ...
>
> <form id="patient_form">
> <fieldset>
> <table>
> <tr>
> <td> Patient ID (or leave empty for new patient): <input name
> ="patient_id" id="patient_id" value={{=(patient_id or '')}}></td>
> <td><input type="submit" value="Search Patient"></td>
> <div id="clearcanvas_target">{{=study_response}}</div>
> </tr>
> <tr>
> <td> Source: <input type='text' name='source' id='source'
> value={{=patient_source}}>
> Diagnosis: <input type='text' name='diagnosis' id=
> 'diagnosis' value={{=patient_diagnosis}}>
> </td>
>
> </tr>
> </table>
> </fieldset>
> </form>
>
> ... and here is the part of patient_load.py, where I can get the
> patient_id from request.vars.patient_id, and set a global variable
> session.patient_id to have the same value.
>
> if(request.vars.patient_id):
> session.patient_id = int(request.vars.patient_id)
>
> study_response = open_patient_images_clearcanvas(session.
> patient_id)
>
> db = get_db()
>
> rows = db((db.patient.patient_pk == db.patient_diagnosis.
> patient_fk) & (db.patient_diagnosis.diagnosis_fk == db.diagnosis.
> diagnosis_pk) & (db.patient.patient_pk == session.patient_id)).select(db.
> patient.source, db.diagnosis.diagnosis_name)
>
> ...
>
>
> The above patient_load component works OK.
> BUT the third component, where I wish to load patient history, and which
> also requires a patient_id, wont work properly, as the session.patient_id
> above is not updated until i press refresh.
> Here is my main patient_scan_history.py function
>
> def patient_scan_history():
> patient_id = 1
> if(session.patient_id):
> patient_id = session.patient_id
> db = get_db()
> patient_scans = Patient_scan_history(db, patient_id)
> patient_scan_history = patient_scans.get_patient_scan_history()
> else:
> return dict(html_table = None)
>
> html_table = TABLE( TR(*[TH(*headers) for headers inpatient_scan_history
> ['headers']]), *[TR(*rows) for rows in patient_scan_history['table']])
>
> return dict(html_table=html_table)
>
> ... and my patient_scan_history.load
>
> <form>
> <fieldset>
> {{=html_table}}
> </fieldset>
> </form>
>
> So from the users point of view, the top component information loads as
> soon as there is a valid patient id and the submit ('search patient')
> button is pressed. But the third component is not updated at this point,
> and only shows the correct patient history table when the refresh button is
> clicked.
>
> As the 3rd component is reliant on a patient ID from the 1st component,
> I'm guessing maybe it should not be a component ??
> Can anyone help???
>
> Regards
> A
>
>
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