Restore Survey Answers

[atton16]

Hi,

I am developing the survey system based on enketo-core as you already knows it.

Right at the time the form validation is done, we can get the data using $scope.form.getDataStr().

I then tried to use this data by convert the return string to XMLDocument as the library suggested. Then use the data like followings:

var dataStrFromValidation = '...';

var data = {
  modelStr: $scope.loaded_model,
  instanceStr: 'answer',
  submitted: false,
  external: [{
    id: 'answer',
    xml: (new window.DOMParser()).parseFromString(dataStrFromValidation, 'text/xml'),
  }],
  session: {}
};

However, there seems to be the problem with parsing XMLDocument.

See the screenshot below:

Here is the sample data returned from validation

<trip-end-survey_v5
  xmlns:jr="http://openrosa.org/javarosa"
  xmlns:odk="http://www.opendatakit.org/xforms"
  xmlns:orx="http://openrosa.org/xforms"
  id="trip-end-survey_v5"
  version="veMfY6eZ2W9qoGhmfzJX8F">
  <start>2019-05-21T21:14:28.317+07:00</start>
  <end>2019-05-21T21:14:28.320+07:00</end>
  <group_vs9ga59>
    <trip_purpose_main>1</trip_purpose_main>
    <trip_purpose_sub_category/>
  </group_vs9ga59>
  <group_ee9rk21>
    <travel_mode_main>vehicle</travel_mode_main>
    <travel_mode_sub_category>4</travel_mode_sub_category>
    <Total_people_in_trip_party>1</Total_people_in_trip_party>
    <Non_household_member_s_on_trip>2</Non_household_member_s_on_trip>
    <Household_member_s_on_trip>5</Household_member_s_on_trip>
    <group_bn3jd79>
      <Vehicle_trip_with_2_Driver_or_passenger>1</Vehicle_trip_with_2_Driver_or_passenger>
      <Vehicle_trip_Parking_location>5</Vehicle_trip_Parking_location>
      <Parking_cost>10</Parking_cost>
    </group_bn3jd79>
    <Rail_payment_method/>
    <Transit_fees_AUD/>
    <Taxi_fees/>
  </group_ee9rk21>
  <__version__>vLX8oPb8xP2pLvxNBagygU</__version__>
  <_version_>vwpCadzPYVsW9XEjxZzwnR</_version_>
  <_version__001>vSuFDQ2DcmpRpKcRfSXReq</_version__001>
  <_version__002>veMfY6eZ2W9qoGhmfzJX8F</_version__002>
  <meta>
    <instanceID>uuid:25c045ff-e8e6-4799-acdb-7d15f8f80b70</instanceID>
  </meta>
</trip-end-survey_v5>

[shankari]

@atton16 yes it is pretty clear that something is undefined. not sure whether it is the DOMParser or the method or the string. Maybe add some more logging/check the debugger to figure it out?

Also, the external field is not intended to pre-populate the values in the form; it is intended to pre-populate the options in the form - e.g. list of countries or list of cities.
http://xlsform.org/en/#external-xml-data
or more generally, https://duckduckgo.com/?q=xlsforms+external&t=ffsb&ia=web

[shankari]

There is also some additional discussion and a live example in XLSForm/pyxform#30

[shankari]

FYI, I have confirmed that the DOMParser is available on both Firefox and Safari - e.g.

[atton16]

There is also some additional discussion and a live example in XLSForm/pyxform#30

Thanks, I am looking at it now.

[atton16]

It appears that the correct field is instanceStr.

So the code should looks like this:

var dataStrFromValidation = '...';

var data = {
  modelStr: $scope.loaded_model,
  instanceStr: dataStrFromValidation,
  submitted: false,
  external: [],
  session: {}
};

Very simple!!

[shankari]

Closing, implemented in e-mission/e-mission-phone#572