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/28984/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 28984,
    "uuid": "931c7350a9884549aa7027b8bf4f6185",
    "title": "WCRP CMIP6: Geophysical Fluid Dynamics Laboratory (GFDL) GFDL-ESM4 model output collection",
    "abstract": "World Climate Research Programme (WCRP) Coupled Model Intercomparison Project Phase 6 (CMIP6): Collection of simulations from the Geophysical Fluid Dynamics Laboratory (GFDL) GFDL-ESM4 model.\n\nThe official CMIP6 Citation, and its associated DOI, is provided as an online resource linked to this record.",
    "keywords": "CMIP6, WCRP, climate change, NOAA-GFDL, GFDL-ESM4",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28982/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28986/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28989/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28992/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28995/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28998/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29830/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29833/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29836/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29839/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/29842/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30344/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30347/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30368/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30371/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30893/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30935/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30938/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30941/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/31262/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/31265/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/31268/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/31271/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44403/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44407/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44411/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44414/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44417/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44433/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44436/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44439/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44442/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44445/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44448/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44451/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123601/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123602/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123603/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123604/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123605/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123608/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123609/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123610/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123607/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/123606/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/165729/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/165730/?format=api"
    ]
}