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/20404/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 20404,
    "uuid": "216becee8a6844ba8f8f98b9f075a635",
    "title": "WCRP CMIP5: Met Office Hadley Centre (MOHC) HadGEM2-ES model output collection",
    "abstract": "WCRP CMIP5: Met Office Hadley Centre (MOHC) HadGEM2-ES model output collection.",
    "keywords": "CMIP5, WCRP, climate change, MOHC, HadGEM2-ES, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2012-09-26T08:20:40.524326",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20403/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20407/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20410/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20413/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20416/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20419/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20422/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20425/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20428/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20431/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20434/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20437/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20440/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20443/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20446/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20449/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20452/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20455/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20458/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20484/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20486/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20488/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20490/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20492/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20494/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20496/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20498/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20500/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20502/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20504/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20506/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20508/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20510/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20512/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20514/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20516/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20518/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20520/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79414/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79407/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79408/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79409/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79410/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79406/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79412/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79413/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/79411/?format=api"
    ]
}