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/26158/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 26158,
    "uuid": "45b332cd72c14fb3beddb4bf05077c97",
    "title": "UKCP18 Regional Climate Model Projections for the NW Europe Region",
    "abstract": "Regional climate model runs from the North-West Europe regional climate model runs from 1980-2080 produced by the Met Office for UK Climate Projections 2018 (UKCP18). The data is available at daily and monthly temporal resolutions on a 12km latitude-longitude grid.",
    "keywords": "UKCP18, UKCP, Climate, NW-Europe, Simulations, RCM",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2018-11-26T09:00:00",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/26903/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/204934/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112297/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112298/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112299/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112301/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/110963/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112303/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112300/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112302/?format=api"
    ]
}