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/39074/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 39074,
    "uuid": "45ba730bee5b4691917cb82a9b7a7672",
    "title": "PRIMAVERA: Met Office Hadley Centre (MOHC) HadGEM3-GC31-HM model output collection",
    "abstract": "PRIMAVERA Project : Collection of simulations from the Met Office Hadley Centre (MOHC) HadGEM3-GC31-HM model.",
    "keywords": "PRIMAVERA, HighResMIP, climate change, MOHC, HadGEM3-GC31-HM",
    "discoveryKeywords": [],
    "publicationState": "published",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/39072/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/39075/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/39077/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/39079/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/39081/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/189456/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/189449/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/189450/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/189451/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/189452/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/189453/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/189448/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/189455/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/189454/?format=api"
    ]
}