Get a list of Collections objects. Collections have a 1:1 mapping with Observations.

### Available end points:

- `/observationcollections/` - Will list all Collections in the database
- `/observationcollections.json` - Will return all Collections in json format
- `/observationcollections/<object_id>/` - Returns Collections object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `uuid`
- `title`
- `keywords`
- `discoveryKeywords`
- `publicationState`

### How to use filters:

- `/observationcollections/?uuid=ab4ca8d019d148f78afba1cd20872bdd`

- `/observationcollections.json?publicationState=citable`

GET /api/v2/observationcollections/28427/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 28427,
    "uuid": "108b11504ef44f4fb0bb66273e261709",
    "title": "WCRP CMIP6: National Center for Atmospheric Research (NCAR) CESM2-WACCM model output collection",
    "abstract": "World Climate Research Programme (WCRP) Coupled Model Intercomparison Project Phase 6 (CMIP6): Collection of simulations from the National Center for Atmospheric Research (NCAR) CESM2-WACCM model.\n\nThe official CMIP6 Citation, and its associated DOI, is provided as an online resource linked to this record.",
    "keywords": "CMIP6, WCRP, climate change, NCAR, CESM2-WACCM",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28425/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28429/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28432/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28828/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28829/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28830/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28833/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28860/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28863/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28942/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29233/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29812/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29815/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29818/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29821/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/31451/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/34101/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/34104/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120428/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120429/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120430/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120431/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120432/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120435/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120436/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120437/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120434/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/120433/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/165003/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/165004/?format=api"
    ]
}