Yes, sessions are not saved until the end of a request. You may want to
consider putting the 'patient id' in a cookie, or using it as part of the
URL, so you can use request.vars to retrieve it.
On Tuesday, April 23, 2013 5:42:39 AM UTC-7, 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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