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/21452/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 21452,
    "uuid": "f6cb089c2ff34b4299bd853fcc603d52",
    "title": "WCRP CMIP5:  Institute for Numerical Mathematics (INM) inmcm4 model output collection",
    "abstract": "WCRP CMIP5:  Institute for Numerical Mathematics (INM) inmcm4 model output collection.",
    "keywords": "CMIP5, WCRP, climate change, INM, inmcm4, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T13:59:21.209987",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21451/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21455/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21458/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21461/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21464/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21467/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21470/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21473/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21476/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21479/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21482/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21485/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84639/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84632/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84633/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84634/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84635/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84631/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84637/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84638/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/84636/?format=api"
    ]
}