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/37255/?format=api

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

{
    "ob_id": 37255,
    "uuid": "4555b38d2c5a48edbbe5f1e72670d7a4",
    "title": "IPCC Data Distribution Centre subsets provided by the LINK project.",
    "abstract": "This dataset contains output data from a number of models  associated  with the IPCC Third Assessment Report.  This data was processed at the Climate Research Unit at the University of East Anglia. The data extraction was intended for use by the Climate Impacts Community (and was funded by the UK Department of Environment Food and Rural Affairs, Defra).\r\n\r\nData from various modelling centres and models: CCCMA, CSIRO, ECHAM4, GFDL99, HADCM3, NIES99.",
    "keywords": "DDC, IPCC, Link",
    "publicationState": "published",
    "dataPublishedTime": "2008-01-01T00:00:00",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/37256/?format=api",
        "dataPath": "/badc/link/data/ddc",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 390657717,
        "numberOfFiles": 1668,
        "fileFormat": "Unknown"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/2003/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data from various modelling centres and models: CCCMA, CSIRO, ECHAM4, GFDL99, HADCM3, NIES99.  Data extracted by CRU and transfered to the BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/6935/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/178038/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/178040/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/178039/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/178043/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/178044/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/178034/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/178036/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/178037/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/178042/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/6936/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2613/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "link",
            "label": "restricted: link group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/ukmo_agreement.pdf",
            "licenceClassifications": "academic"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}