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/26459/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 26459,
    "uuid": "6accd46663bc4669afaac418f2bf498e",
    "title": "Sentinel 5 Precursor: Level 2 data",
    "abstract": "Need some info!",
    "keywords": "",
    "discoveryKeywords": [],
    "publicationState": "working",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/26440/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/26441/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/26461/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/26499/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27467/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27469/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30115/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/37838/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/37840/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/38310/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111213/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111208/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111209/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111210/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111211/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111212/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111214/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111207/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/111215/?format=api"
    ]
}