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/27201/?format=api

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

{
    "ob_id": 27201,
    "uuid": "6d73dc9c4a3f45008b57ed19fe74b07d",
    "title": "Taking forward the United Nations Environment Assembly (UNEA) resolution No2 air quality data for Sub-Saharan Africa",
    "abstract": "This dataset contains No2 air quality data measurements taken in from Mukuru in Nairobi using passive samplers. This data was taken as part of the NERC funded project Taking forward the United Nations Environment Assembly (UNEA) resolution: Pilot to determine the air quality drivers for Sub-Saharan Africa (NE/P008453/1).\r\n\r\nThis pilot project, AQD-Nairobi, was designed to integrate low and high temporal resolution low-cost air quality (AQ) measurements to determine AQ drivers in Nairobi and be an exemplar scientific study for sub-Saharan Africa.",
    "keywords": "NE/P008453/1, Air Quality, Sub-Saharan Africa, Nairobi, AQD",
    "publicationState": "published",
    "dataPublishedTime": "2019-03-07T11:54:04",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/27259/?format=api",
        "dataPath": "/badc/deposited2019/unea-air-quality/data/no2",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 5224,
        "numberOfFiles": 2,
        "fileFormat": "Data are BADC CSV formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7313/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2367/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59268/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59269/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59270/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59271/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59272/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/91907/?format=api"
    ],
    "dataLineage": "Data were collected by the project team and sent to the Centre for Environmental Data Anyalsis (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/27196/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/27197/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113881/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113885/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113883/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113886/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113887/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113888/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113889/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113882/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113884/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168865/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113890/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113891/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113892/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/113893/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/27200/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}