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/32263/?format=api

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

{
    "ob_id": 32263,
    "uuid": "4d9eb71f6874435ab88d3c37539f1ed7",
    "title": "ECMWF Forecasts for project support.",
    "abstract": "This dataset contained a variety of forecast data from ECMWF, which supported observation campaigns. The variables, geo-temporal extent and other aspects were different for each campaign supported. The project supported were: adient, catlin, cloudmap2, crose, troccinox,  itop, plume, slimcat, torch and vintersol.\r\n\r\nThese data are no longer relevant, and were not reusable due the very specific access conditions that applied to each project.",
    "keywords": "",
    "publicationState": "removed",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "retired",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/32262/?format=api",
        "dataPath": "/badc/ecmwf-for",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 937,
        "numberOfFiles": 1,
        "fileFormat": "GRIB"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8850/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25925/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25973/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88554/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88555/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88556/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88557/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88558/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88560/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88561/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/88562/?format=api"
    ],
    "dataLineage": "Operational forecast data  produced by ECMWF. Extracted for projects from ECMWF MARS system and archived at the Centre for Environmental Data Analysis (CEDA).",
    "removedDataTime": "2021-03-31T14:19:18",
    "removedDataReason": "These data are no longer relevant, and were not reusable due the very specific access conditions that applied to each project.",
    "language": "English",
    "identifier_set": [],
    "projects": [],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143537/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143538/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143539/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143541/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143542/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143543/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143540/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2617/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "ecmwffor",
            "label": "restricted: ecmwffor group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}