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/22322/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 22322,
    "uuid": "6f51d26e7699413196cc6f8b29bfa4b2",
    "title": "WCRP CMIP5: Geophysical Fluid Dynamics Laboratory (GFDL) GFDL-ESM2G model output collection",
    "abstract": "WCRP CMIP5: Geophysical Fluid Dynamics Laboratory (GFDL) GFDL-ESM2G model output collection.",
    "keywords": "CMIP5, WCRP, climate change, NOAA-GFDL, GFDL-ESM2G, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:11:31.928284",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22321/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22325/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22328/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22331/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22334/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22337/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22340/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22343/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22346/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22349/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22352/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/22355/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89674/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89667/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89668/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89669/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89670/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89666/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89672/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89673/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/89671/?format=api"
    ]
}