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/15574/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 15574,
    "uuid": "664832a9194f4246b2165142e1c69ecd",
    "title": "SUMEX: in-situ airborne observations by the FAAM BAE-146 aircraft",
    "abstract": "In-situ airborne observations by the FAAM BAE-146 aircraft for SUMEX-14: Met Office Summer Campaign, 2014.",
    "keywords": "SUMEX, FAAM, airborne, atmospheric measurments",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2015-04-23T13:37:31",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/15573/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/16089/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/17141/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/17145/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60180/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60172/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60173/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60179/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60171/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60176/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60177/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60178/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60174/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/60175/?format=api"
    ]
}