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/30899/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 30899,
    "uuid": "3691983c2549432287e113d9d04d744c",
    "title": "WCRP CMIP6: Nanjing University of Information Science and Technology (NUIST) NESM3 model output collection",
    "abstract": "World Climate Research Programme (WCRP) Coupled Model Intercomparison Project Phase 6 (CMIP6): Collection of simulations from the Nanjing University of Information Science and Technology (NUIST) NESM3 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, NUIST, NESM3",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30897/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30901/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/38917/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/38920/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/38923/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/134562/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/134554/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/134556/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/134557/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/134558/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/134559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/134560/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/134561/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/134555/?format=api"
    ]
}