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/21117/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 21117,
    "uuid": "da3139436f0743558900efc41cec070f",
    "title": "WCRP CMIP5: Norwegian Climate Centre (NCC) NorESM1-ME model output collection",
    "abstract": "WCRP CMIP5: Norwegian Climate Centre (NCC) NorESM1-ME model output collection.",
    "keywords": "CMIP5, WCRP, climate change, NCC, NorESM1-ME, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:04:06.045796",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21116/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21120/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21123/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21126/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21129/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21132/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21135/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21138/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21141/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21144/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21147/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21150/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/82974/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/82967/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/82968/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/82969/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/82970/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/82966/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/82972/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/82973/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/82971/?format=api"
    ]
}