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/13523/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 13523,
    "uuid": "f7189fabb084452c9818ba41e59ccabd",
    "title": "HadCRUT: gridded dataset of global historical surface temperature anomalies",
    "abstract": "HadCRUT is a gridded dataset of global historical surface temperature anomalies, relative to a 1961-1990 reference period. \r\n\r\nData are available for each month since January 1850, on a 5 degree grid.\r\nThe gridded data are a blend of the CRUTEM land-surface air temperature dataset and the HadSST sea-surface temperature (SST) dataset. The dataset is presented as an ensemble of 100 dataset realisations that sample the distribution of uncertainty in the global temperature record.",
    "keywords": "HadCRUT4, HadCRUT",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2019-05-03T13:29:07",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/13532/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/24943/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/32020/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8607/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141879/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51830/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51656/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51655/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51831/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141876/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141877/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141878/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51829/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168763/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168764/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52399/?format=api"
    ]
}