Observation Instance – Django REST framework

Get a list of Observation objects.

### Available end points:

- `/observations/` - Will list all Results in the database
- `/observations.json` - Will return all Results in json format. This can
also be achieved by using the accept header. `application/json`
- `/observations/<object_id>/` - Returns Results object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `title`
- `uuid`
- `keywords`
- `status`
- `result_field`
- `discoveryKeywords`
- `updateFrequency`
- `nonGeographicFlag`
- `publicationState`
- `permissions`

### How to use filters:

These filters can be used like django query filters using __ for related model relationships.

- `/observations/?uuid=d594d53df2612bbd89c2e0e770b5c1a0`
- `/observations/?status=completed`
- `/observations/?results_field__dataPath__startswith=/neodc/esacci`
- `/observations/?discoveryKeywords__name=ESACCI`
- `/observations/?nonGeographicFlag=True`

Filters can be stacked to build an 'AND' relationship. E.g.

- `/observations/?publicationState__in=published,citable&nonGeographicFlag=True`
- `/observations/?publicationState__in=published,citable&discoveryKeyword__name=NDGO0003`

GET /api/v2/observations/25024/?format=api

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 25024,
    "uuid": "fc867884cef243c5adbd081f3b14c709",
    "title": "Ice nucleation by fertile soil dusts: relative importance of mineral and biogenic components: Ice active site density verses temperature for a number soil samples",
    "abstract": "These data are associated with Ice nucleation by fertile soil dusts: relative importance of mineral and biogenic components, by D. O’Sullivan, B. J. Murray, T. L. Malkin, T. F. Whale, N. S. Umo, J. D. Atkinson, H. C. Price, K. J. Baustian, J. Browse, and M. E. Webb. Atmos. Chem. Phys., 14, 1853–1867, 2014 www.atmos-chem-phys.net/14/1853/2014/ doi:10.5194/acp-14-1853-2014. The lab measurement data comprise Ice active site density verses temperature for a number of samples.  The data are in CSV format.",
    "keywords": "",
    "publicationState": "published",
    "dataPublishedTime": "2017-09-06T09:41:07",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/25023/?format=api",
        "dataPath": "/badc/deposited2017/osullivan_ice_nucleation2014/data",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 6350559,
        "numberOfFiles": 24,
        "fileFormat": "CSV"
    },
    "timePeriod": null,
    "geographicExtent": null,
    "nonGeographicFlag": true,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56232/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/56233/?format=api"
    ],
    "dataLineage": "Data supplied by project scientist. Reference to paper within the files added by CEDA staff.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/11986/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/25025/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/25026/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102468/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102470/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102471/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102472/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104811/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104974/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104991/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102469/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2526/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}