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/4854/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 4854,
    "uuid": "f2afaf808b61394b78bd342ff068c8cd",
    "title": "Met Office Global Radiosonde Data",
    "abstract": "Standard resolution radiosonde data from worldwide upper air stations over the period 1997 - present (Some European stations are available from 1990). The dataset consists of vertical profiles of temperature, dew-point temperature, wind speed and wind direction from the surface to approximately 20-30 km. Data are reported up to four times daily. The data are provided by the Met Office.",
    "keywords": "",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2006-12-10T03:06:43",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/4855/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3240/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3241/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10431/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10432/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/22005/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/22007/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/22008/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/22009/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/22011/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44426/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44427/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/22006/?format=api"
    ]
}