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/23487/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 23487,
    "uuid": "cc840b74a3024f9c8552b8bdbd051b46",
    "title": "WCRP CMIP5: The NSF-DOE-NCAR team CESM1-BGC model output collection",
    "abstract": "WCRP CMIP5: The NSF-DOE-NCAR team CESM1-BGC 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-BGC, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:03:54.298308",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23486/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23490/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23493/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23496/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23499/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23502/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23505/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23508/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23511/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23514/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23517/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/23520/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95360/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95349/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95350/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95353/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95354/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95358/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95359/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95348/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95351/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95355/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95352/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95356/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/95357/?format=api"
    ]
}