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/21962/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 21962,
    "uuid": "f4a667ca60dc4e3e83b7bf59ed859a95",
    "title": "WCRP CMIP5: NASA Goddard Institute for Space Studies (NASA GISS) GISS-E2-R model output collection",
    "abstract": "WCRP CMIP5: NASA Goddard Institute for Space Studies (NASA GISS) GISS-E2-R model output collection.",
    "keywords": "CMIP5, WCRP, climate change, NASA-GISS, GISS-E2-R, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:55:04.862388",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21961/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21965/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21968/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21971/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21974/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21977/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21980/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21983/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21986/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21989/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21992/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21995/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21998/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22001/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22004/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22007/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/87959/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/87952/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/87953/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/87954/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/87955/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/87951/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/87957/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/87958/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/87956/?format=api"
    ]
}