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/31367/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 31367,
    "uuid": "2efd4a6a45e34a2a97fb1379124a7171",
    "title": "WCRP CMIP6: Deutscher Wetterdienst (DWD) MPI-ESM1-2-HR model output collection",
    "abstract": "World Climate Research Programme (WCRP) Coupled Model Intercomparison Project Phase 6 (CMIP6): Collection of simulations from the Deutscher Wetterdienst (DWD) MPI-ESM1-2-HR 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, DWD, MPI-ESM1-2-HR",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/31365/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/31369/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/137749/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/137741/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/137743/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/137744/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/137745/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/137746/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/137747/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/137748/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/137742/?format=api"
    ]
}