The Bokio API supports powerful filtering capabilities through query parameters in GET requests. Filtering allows you to retrieve only the data that matches specific criteria, making your API calls more efficient and reducing the amount of data transferred.

How Filtering Works

Filters are applied using query parameters in the URL. The general syntax is:

GET /api/resource?query=property operator value

Not all properties in a resource are available for filtering. Please refer to each operation's documentation to see which properties can be filtered.

Filter Syntax

Basic Structure

Property: The field you want to filter on (e.g., name, amount, createdDate)
Operator: The comparison operator (see table below)
Value: The value to compare against

URL Encoding

⚠️
Do NOT forget to url-encode filter query

When constructing filter queries, remember to URL-encode special characters:

Spaces: %20
Equals: %3D (when part of the value)
Ampersand: %26
Pipe: %7C

Supported Operators

Operator	Explanation	Number	String	Date/Datetime
`==`	Equals	✅	✅	✅
`!=`	Not equals	✅	✅	✅
`>`	Greater than	✅	❌	✅
`<`	Less than	✅	❌	✅
`>=`	Greater than or equal to	✅	❌	✅
`<=`	Less than or equal to	✅	❌	✅
`~`	Contains	❌	✅	❌
`&&`	AND
`\|\\|`	OR

Examples by Data Type

String Filtering

Exact Match (==)

GET /api/customers?query=name==John%20Doe

Finds customers with the exact name "John Doe".

Not Equal (!=)

GET /api/invoices?query=status!=draft

Finds all invoices except those with status "draft".

Contains (~)

GET /api/customers?query=name~John

Finds customers whose name contains "John" (case-sensitive).

Number Filtering

Exact Match (==)

GET /api/invoices?query=totalAmount==1000

Finds invoices with exactly 1000 in totalAmount.

Greater Than (>)

GET /api/invoices?query=totalAmount>500

Finds invoices with totalAmount greater than 500.

Range Filtering

GET /api/invoices?query=totalAmount>=100&&totalAmount<=1000

Finds invoices with totalAmount between 100 and 1000 (inclusive).

Date/DateTime Filtering

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Please note the formatting of Date and time

Exact Date (==)

GET /api/invoices?query=dueDate==2025-01-15

Finds invoices due on exactly January 15, 2025.

Date Range

GET /api/invoices?query=invoiceDate>=2025-01-01&&invoiceDate<2025-02-01

Finds invoices with invoice date in January 2025.

Recent Records

GET /api/invoices?query=invoiceDate>2025-01-01

Finds invoices with invoice date after January 1, 2025.

Combining Filters

AND Operations (&&)

Use && to combine multiple conditions that must all be true:

GET /api/invoices?query=status==pending&&totalAmount>100&&dueDate<2025-12-31

Finds pending invoices over 100 that are due before the end of 2025.

OR Operations (||)

Use || to combine conditions where any one can be true:

GET /api/invoices?query=status==published||status==paid

Finds invoices that are either published or paid.

Common Use Cases

Financial Reports

# Invoices from Q1 2025 over 1000
GET /api/invoices?query=invoiceDate>=2025-01-01&&invoiceDate<2025-04-01&&totalAmount>1000

# Unpaid invoices with due date this month
GET /api/invoices?query=status!=paid&&invoiceDate>=2025-01-01&&invoiceDate<2025-02-01

Customer Management

# Customers with Swedish VAT number
GET /api/customers?query=vatNumber~SE

# Private customers
GET /api/customers?query=type==private

Journal Entries

# Entries for a date range where the title contains invoice
GET /api/journal-entries?query=date>=2025-01-01&&date<=2025-01-31&&title~invoice

Troubleshooting

No results returned: Check that your filter values match the exact format and case of the data
Syntax errors: Ensure proper URL encoding of special characters
Unexpected results: Verify that you're using the correct operator for the data type
Performance issues: Consider if there are ways to reduce complexity of the filter

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Support and Community
If you have any questions, issues, or feedback regarding the Bokio API, please reach out to support@bokio.se or join the Developer community. We appreciate any feedback you might have.