Using the single event API on DHIS2
Use /api/me to get the org unit of the logged in user. The admin user is attached to the National (Sierra Leone) org unit, where there is no single-event data to enter. The data to be entered is at the lower levels (for example Ngelehun). So to use this effectively, create a user which is attached to for example Ngelehun which you use to demo and test. When you create a user, you also need to give it access to the program and the correct permissions. The simplest is to add it to all the user roles.
To create a user, go to: http://apps.dhis2.org/demo/dhis-web-maintenance-user/showAddUserForm.action and enter user details. Add all availalbe roles by pressing the '>>' button on 'Available roles'. Then select a lower org-unit. For example Ngelehun CHC.
Log in with this user in Chrome. Install a JSON formatter extension to see JSON more easily. Go to http://apps.dhis2.org/demo/api/me . On the bottom, you'll see organisationUnits and you can see the id of Ngelehun (DiszpKrYNg8).
Now find the program id you want to enter (or view) data for. Go to http://apps.dhis2.org/demo/api/programs.json. This is a list of all programs the logged in user has access to. If you can't see a program here that you're expecting, it might be a permission setting for your logged in user. Find the program id. Both geolocation and survey projects are working on programs of the type: SINGLE_EVENTS_WITHOUT_REGISTRATION. Ignore the others. The "Inpatient morbidity and mortality" program for example has id eBAyeGv0exc. To see more info about this program, go to http://apps.dhis2.org/demo/api/programs/eBAyeGv0exc.json. From this JSON, you'll also see the programStages. For Single Event, there's only one programstage. You can see more info about the programstage here: http://apps.dhis2.org/demo/api/programStages/Zj7UnCAulEk.json
See the event analytics api documentation at: http://www.dhis2.org/doc/snapshot/en/user/html/ch25s22.html
The following URL is an example which lists a list of events (see doc-link above):
To extract and submit individual event data, use another api. See http://www.dhis2.org/doc/snapshot/en/user/html/ch25s07.html
For example, access: http://apps.dhis2.org/demo/api/events/KNDKnxPZFK6.json