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/21490/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 21490,
    "uuid": "a1febf62fbb54c79ab73e6f9b93bc485",
    "title": "WCRP CMIP5: Meteorological Research Institute of MRI/JMA MRI-CGCM3 model output collection",
    "abstract": "WCRP CMIP5: Meteorological Research Institute of MRI/JMA MRI-CGCM3 model output collection.",
    "keywords": "CMIP5, WCRP, climate change, MRI, MRI-CGCM3, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2013-11-21T12:44:45.898535",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21489/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21493/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21496/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21499/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21502/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21505/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21508/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21511/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21514/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21517/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21520/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21523/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21526/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21529/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21532/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21535/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21538/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21541/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21544/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21547/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21550/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21553/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21556/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21562/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21565/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21568/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21571/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21574/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21577/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21580/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21583/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21586/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21589/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21592/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21595/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84823/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84816/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84817/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84818/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84819/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84815/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84821/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84822/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84820/?format=api"
    ]
}