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/20470/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 20470,
    "uuid": "2e4f5b3748874c61a265f58039898ea5",
    "title": "WCRP CMIP5: Met Office Hadley Centre (MOHC) HadGEM2-CC model output collection",
    "abstract": "WCRP CMIP5: Met Office Hadley Centre (MOHC) HadGEM2-CC model output collection.",
    "keywords": "CMIP5, WCRP, climate change, MOHC, HadGEM2-CC, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2012-09-26T08:26:14.027317",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20469/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20473/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20476/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20479/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20482/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20709/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20711/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20713/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20715/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20717/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79735/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79728/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79729/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79730/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79731/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79727/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79733/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79734/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79732/?format=api"
    ]
}