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/23471/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 23471,
    "uuid": "1d9825e2b05b48cdb7971ced8c63965a",
    "title": "WCRP CMIP5: The NSF-DOE-NCAR team CESM1-WACCM model output collection",
    "abstract": "WCRP CMIP5: The NSF-DOE-NCAR team CESM1-WACCM 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-WACCM, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:03:53.923293",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23470/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23474/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23477/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23480/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23483/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95237/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95226/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95227/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95230/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95231/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95235/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95236/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95225/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95228/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95232/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95229/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95233/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95234/?format=api"
    ]
}