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/23524/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 23524,
    "uuid": "47e562d1865f4ce6b06a7a292ea85227",
    "title": "WCRP CMIP5: The NSF-DOE-NCAR team CESM1-CAM5 model output collection",
    "abstract": "WCRP CMIP5: The NSF-DOE-NCAR team CESM1-CAM5 model output collection.The NSF-DOE-NCAR team consisted of the following agencies: National Science Foundation (NSF) and National Center for Atmospheric Research (NCAR).",
    "keywords": "CMIP5, WCRP, climate change, NSF-DOE-NCAR, CESM1-CAM5, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:08:01.469572",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23523/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23527/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23530/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23533/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23536/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23539/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23542/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23545/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23551/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23554/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23557/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23560/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95637/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95626/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95627/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95630/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95631/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95635/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95636/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95625/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95628/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95632/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95629/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95633/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95634/?format=api"
    ]
}