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/20722/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 20722,
    "uuid": "4615367d18014d4d8f71d34d966d196f",
    "title": "WCRP CMIP5: Institut Pierre-Simon Laplace (IPSL) IPSL-CM5A-LR model output collection",
    "abstract": "WCRP CMIP5: Institut Pierre-Simon Laplace (IPSL) IPSL-CM5A-LR model output collection.",
    "keywords": "CMIP5, WCRP, climate change, IPSL, IPSL-CM5A-LR, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:00:30.317854",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20721/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20725/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20728/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20731/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20734/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20737/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20740/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20743/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20746/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20749/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20752/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20755/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20758/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20761/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20764/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20767/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20770/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20773/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20776/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20779/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20782/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20785/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20788/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20791/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20794/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20797/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20800/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20803/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20806/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20809/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20812/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20815/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20818/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20821/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20824/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20827/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20830/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20833/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20836/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20839/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20842/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20845/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/80909/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/80902/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/80903/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/80904/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/80905/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/80901/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/80907/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/80908/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/80906/?format=api"
    ]
}