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/22048/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 22048,
    "uuid": "2867829ca7e04b97ac8279df6af2593a",
    "title": "WCRP CMIP5: NASA Goddard Institute for Space Studies (NASA GISS) GISS-E2-R-CC model output collection",
    "abstract": "WCRP CMIP5: NASA Goddard Institute for Space Studies (NASA GISS) GISS-E2-R-CC model output collection.",
    "keywords": "CMIP5, WCRP, climate change, NASA-GISS, GISS-E2-R-CC, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:01:45.714978",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22047/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22051/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22054/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22057/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22060/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22063/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/88369/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/88362/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/88363/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/88364/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/88365/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/88361/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/88367/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/88368/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/88366/?format=api"
    ]
}