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/27537/?format=api

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

{
    "ob_id": 27537,
    "uuid": "171726739bb54d0ba84cdde15c5b17ae",
    "title": "Ice-nucleating ability measurements of quartz samples",
    "abstract": "This dataset contains ice-nucleating ability measurements of quartz samples using a Microlitre Nucleation by Immersed Particle Instrument (uL-NIPI). These measurements were taken as part of the Measuring atmospheric marine ice nucleating particles using technologies developed for cryopreservation project, funded by NERC (NE/M010473/1). The measurements where taken during the course of 2017 at the School of Earth and Environment, University of Leeds.\r\n\r\nThis dataset contains two files: \r\nQuartz_Fraction_frozens_and_ns.csv: This file contains the freezing temperature, fraction frozen and active site density (ns) for 10 quartz samples. Each of these experiments were repeated a second time and are recorded as run 2.\r\nQuartz_Time_series_ns.csv: This file contains the freezing temperatures and active site density (ns) for 3 quartz samples when left for differing periods of time in water and air.",
    "keywords": "quartz, ice-nucleating, fraction, freezing temperatures",
    "publicationState": "citable",
    "dataPublishedTime": "2019-06-19T14:17:17",
    "doiPublishedTime": "2019-06-25T13:44:17",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/27538/?format=api",
        "dataPath": "/badc/deposited2019/quartz_ice_nucleating/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 58646,
        "numberOfFiles": 3,
        "fileFormat": "Data are BADC-CSV formatted."
    },
    "timePeriod": null,
    "geographicExtent": null,
    "nonGeographicFlag": true,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68303/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68304/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68305/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68306/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68307/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68308/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68309/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68310/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68311/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68312/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68313/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68314/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68315/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68316/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68317/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68318/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68319/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68320/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68321/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68322/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68323/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68324/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68325/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68326/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68327/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68328/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68329/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68330/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68331/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68332/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68333/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68334/?format=api"
    ],
    "dataLineage": "Data delivered from the University of Leeds for archiving at the Centre for Environmental Data Anaylsis.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10535/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/26553/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115193/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115201/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115202/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115203/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115204/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115206/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115207/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115208/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115205/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115194/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168885/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115195/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115196/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115197/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115198/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115199/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115200/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/26551/?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"
        }
    ]
}