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/15331/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 15331,
    "uuid": "cd3dcce0a412436ba336a3faba3a996c",
    "title": "CIMS: in-situ airborne observations by the FAAM BAE-146 aircraft",
    "abstract": "In-situ airborne observations by the FAAM BAE-146 aircraft for CIMS - Chemical Ionisation Mass Spectrometer.",
    "keywords": "CIMS, FAAM, airborne, atmospheric measurments",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2014-07-14T13:38:12",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/15330/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/15343/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/15348/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18109/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10227/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59378/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59370/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59371/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59377/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59369/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59374/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59375/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59376/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59372/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/59373/?format=api"
    ]
}