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# Query Parameters

Query parameters for filtering, ordering and/or pagination are supported for several resources in the Solvimon API. The [API documentation](/platform-guides/for-developers/api) shows where these query actions are supported.

In the articles below each parameter type is explained in detail:

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## Filtering

Filtering allows an API user to receive a limited subset of the query results based on a filter provided as a query parameter. The filter that is desired is submitted as a query parameter and the matching filter value is submitted as a query value. The filter value can either be a string, a list of strings, or a date range. Please refer to the [API documentation](/platform-guides/for-developers/api) to see which filters are available for the to-be-filtered resource.

For instance, if you want to search for pricing plan subscriptions, where:

1. the starting date of the pricing plan subscription schedule dates is between `01/01/2023` and `01/04/2023` , and
2. the status of the pricing plan subscription is `DRAFT`

the following request will achieve this

`https://test.api.solvimon.com/v1/pricing-plan-subscriptions?start_at=[2023-01-01T00:00:00Z,2023-04-01T00:00:00Z]&status=DRAFT`

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## Ordering

Some endpoint results can be ordered by adding the `order_by` query parameter to the request, and adding a query value of the field on which you want the request to be ordered. It is also possible to alter the order direction by adding the query parameter `order_direction`, setting it to either `desc` for descending, or `asc` for ascending. If the `order_direction` is excluded from the request, it is set to `desc`. An example of an ordered request is:

`https://test.api.solvimon.com/v1/pricing-plan-subscriptions?order_by=start_at&order_direction=desc`

where the results are ordered in a descending order based on the `start_at` date of the pricing plan subscription.

The following resources are available for ordering:

| Resource end point            | Fields                                                                                                                 |
| :---------------------------- | :--------------------------------------------------------------------------------------------------------------------- |
| `/pricing-plan-subscriptions` | `reference`, `pricing_plan_name`, `start_at`, `billing_currency`, `billing_period`, `created_at`, `updated_at`, `type` |
| `/invoices`                   | `invoice_number`, `invoice_date`, `due_date`, `invoice_amount_including_tax`, `status`, `created_at`                   |
| `/quotes`                     | `customer_id`, `owner_user_id`, `status`, `created_at`                                                                 |
| `/customers`                  | `reference`, `email`, `created_at`, `status`                                                                           |

\


---

## Pagination

For some resources, the Solvimon API supports pagination. When performing a get request for the endpoints `/ingest/meter-data` , `/customers` , `/invoices`, `/contacts`,  `/pricing-plans` and `/pricing-plan-subscriptions`,  the resulting response will be returned in a paginated manner.

Customer `page` and `limit` query parameters can be given with the request. When the `page` and `limit` parameters are omitted, they are set to the values `1` and `50` respectively. The `limit` parameter indicates how many elements ought to be returned in the response. The `page` parameter indicates which page of results is shown. For instance, when a resource has 80 entries on the Solvimon platform, and a limit is set at `20` and the page number is `1`, it will show the first 20 elements of the these list entries. With a identical limit, and page number set to `2`, the response will include entries 21 to 40.

The response for paginated resources is always return 5 parameters. First we have the `data` which shows the returned resource entries. Next, parameter `page` shows the page number included in the request. The `limit` parameter shows the `limit` given in the request. Next, `total_number_of_pages` shows the overall number of pages that are available.

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Finally, there is a `links` parameter, which includes links for requests to other pages of the requested resource. The possible links included in the response are `first`, `previous`, `current` and `next`.  Links `first` and `previous` are only included when the page number is greater than one. The `next` link is only included when there are more entries of the list to be returned. For instance, when there are 2 `total_number_of_pages` and the `page` set in the request is `2`, the `next` link is omitted.

An example of a response for the request `https://test.api.solvimon.com/v1/customers?page=2&limit=2` is shown in the code block below:

**`JSON`**

```Text JSON
{
    "data": [
        {
            "object_type": "CUSTOMER",
            "id": "cust_qwDvxI0tDFJ1GTBaeX1z",
            "created_at": "2023-05-08T13:29:33Z",
            "reference": "customer_organization_feestbazaar",
            "status": "ACTIVE",
            "timezone": "UTC",
            "type": "ORGANIZATION",
            "email": "jane.doe@solvimon.com",
            "organization": {
                "legal_name": "Feestbazaar",
                "tax_id": "NL0987654",
                "tax_exempt": false,
                "registered_address": {
                    "line1": "Daalsesingel 51",
                    "line2": "Blok A",
                    "city": "Utrecht",
                    "postal_code": "3511 SW",
                    "state": "",
                    "country": "NL"
                }
            }
        },
        {
            "object_type": "CUSTOMER",
            "id": "cust_UwDvxh0tDo8xb4BWeC1c",
            "created_at": "2023-05-05T13:17:58Z",
            "reference": "customer_organization_only-bv",
            "status": "ACTIVE",
            "timezone": "UTC",
            "type": "ORGANIZATION",
            "email": "billing@only.com",
            "organization": {
                "legal_name": "Only BV",
                "tax_id": "NL0987654",
                "tax_exempt": false,
                "registered_address": {
                    "line1": "Streetaddress 111",
                    "line2": "Building A",
                    "city": "Utrecht",
                    "postal_code": "3511 SW",
                    "state": "",
                    "country": "NL"
                }
            }
        }
    ],
    "page": 2,
    "limit": 2,
    "total_number_of_pages": 4,
    "links": {
        "first": "https://test.api.solvimon.com/v1/customers?page=1&limit=2",
        "previous": "https://test.api.solvimon.com/v1/customers?page=1&limit=2",
        "current": "https://test.api.solvimon.com/v1/customers?page=2&limit=2",
        "next": "https://test.api.solvimon.com/v1/customers?page=3&limit=2"
    }
}
```

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