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/21155/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 21155,
    "uuid": "fc19058382304b27a34286c5a244ba97",
    "title": "WCRP CMIP5: The CSIRO-QCCCE team CSIRO-Mk3-6-0 model output collection",
    "abstract": "WCRP CMIP5: The CSIRO-QCCCE team CSIRO-Mk3-6-0 model output collection.The CSIRO-QCCCE team consisted of the following agencies: The Commonwealth Scientific and Industrial Research Organisation (CSIRO, Australia) and Queensland Climate Change Centre of Excellence (QCCCE).",
    "keywords": "CMIP5, WCRP, climate change, CSIRO-QCCCE, CSIRO-Mk3-6-0, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T14:06:32.167862",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21154/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21158/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21161/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21164/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21167/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21170/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21173/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21176/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21179/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21182/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21185/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21188/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21191/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21194/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21197/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21200/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21203/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83167/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83158/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83159/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83165/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83166/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83157/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83161/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83162/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83160/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83163/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83164/?format=api"
    ]
}