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/22267/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 22267,
    "uuid": "ca7049370a6b47fb9c37d8d8e30520ba",
    "title": "WCRP CMIP5: Geophysical Fluid Dynamics Laboratory (GFDL) GFDL-CM3 model output collection",
    "abstract": "WCRP CMIP5: Geophysical Fluid Dynamics Laboratory (GFDL) GFDL-CM3 model output collection.",
    "keywords": "CMIP5, WCRP, climate change, NOAA-GFDL, GFDL-CM3, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:16:26.237463",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22266/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22270/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22273/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22276/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22279/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22282/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22285/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22288/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22291/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22294/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22297/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22300/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22303/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22306/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22309/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22312/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22315/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22318/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89413/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89406/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89407/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89408/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89409/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89405/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89411/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89412/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89410/?format=api"
    ]
}