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/21208/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 21208,
    "uuid": "109faf28375440de9ef18dec85d132d9",
    "title": "WCRP CMIP5: Canadian Centre for Climate Modelling and Analysis (CCCma) CanESM2 model output collection",
    "abstract": "WCRP CMIP5: Canadian Centre for Climate Modelling and Analysis (CCCma) CanESM2 model output collection.",
    "keywords": "CMIP5, WCRP, climate change, CCCma, CanESM2, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T13:59:48.117106",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21207/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21211/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21214/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21217/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21220/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21223/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21226/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21229/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21232/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21235/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21238/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21241/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21244/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21247/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21250/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21253/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21256/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21259/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21262/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21265/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21268/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21271/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83485/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83478/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83479/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83480/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83481/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83477/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83483/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83484/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/83482/?format=api"
    ]
}