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/2109/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 2109,
    "uuid": "9f7a888398fcb9b49c9a7e380f713e20",
    "title": "Met Office's European Synoptic stations data (1990 - 1996)",
    "abstract": "The Met Office European synoptic stations reported hourly surface data from 141 European stations for the period 1990-1996. Parameters for this dataset include: present and past weather, cloud amount, type and base height, wind direction and speed, visibility, temperature measurements, water vapour pressure, relative humidity, mean sea level pressure, rainfall and gust speed and direction. \r\nNote - this has been superseded by the MIDAS Land Surface Station Dataset. \r\nAdditional background information can be found at the Monthly Weather Report: Vol. 108, 1991, ref. UDC 551 506 1(41-1) , produced by the Met Office.",
    "keywords": "Met Office, meteorology, Europe, SYNOP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2006-12-10T03:06:04",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/2110/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/1488/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/1489/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10457/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9193/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9195/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9196/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9197/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9199/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43088/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43089/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9194/?format=api"
    ]
}