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/13866/?format=api

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

{
    "ob_id": 13866,
    "uuid": "21179cb9d6fe48929207d8473307f6f5",
    "title": "HadAT Uncertainty Estimates (1958-2002)",
    "abstract": "HadAT Uncertainty estimates are only available on seasonal products and up until the end of 2002.",
    "keywords": "Met Office, HADAT, radiosonde, temperature anomalies, Hadley",
    "publicationState": "published",
    "dataPublishedTime": "2015-12-20T16:11:37",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/13867/?format=api",
        "dataPath": "/badc/ukmo-hadat/data/Uncertainty",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 42993296,
        "numberOfFiles": 14,
        "fileFormat": "The data are available in ASCII and NetCDF format"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3713/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25877/?format=api"
    ],
    "dataLineage": "Data files acquired as is from the Met Office Hadley centre, are stored at the BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8741/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/13164/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/7371/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53172/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53175/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53176/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53177/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53173/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53174/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53170/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53171/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/53178/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55425/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/148636/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/14453/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2598/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "hadat",
            "label": "restricted: hadat group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/ukmo_agreement.pdf",
            "licenceClassifications": "academic"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}