DynamicQueryable.Extensions 1.6.2

DynamicQueryable

DynamicQueryable is a lightweight .NET library for applying dynamic filtering, sorting, paging, and projection to IQueryable (EF Core or any LINQ provider). It supports multiple query-string formats and produces EF Core-translatable expression trees.

Installation

dotnet add package DynamicQueryable.Extensions

Optional (async helpers for EF Core):

dotnet add package DynamicQueryable.Extensions.EFCore

Quick Start

Parse request query into QueryOptions

using DynamicQueryable.Parsers;

var options = QueryOptionsParser.Parse(Request.Query);

Apply to IQueryable

using DynamicQueryable.Extensions;
using Microsoft.EntityFrameworkCore;

[HttpGet]
public async Task<IActionResult> Get()
{
    var options = QueryOptionsParser.Parse(Request.Query);

    // Filter + sort + paging
    var users = await _context.Users
        .ApplyQueryOptions(options)
        .ToListAsync();

    // Projection (optional)
    var projected = await _context.Users
        .ApplyQueryOptions(options)
        .ApplySelect(options)
        .ToListAsync();

    return Ok(new { users, projected });
}

Features

• Filtering: nested AND/OR groups, nested property paths, collection paths (EXISTS/Any)
• Sorting: multi-field ordering
• Paging: page / pageSize or skip / take (format-dependent)
• Projection: select with nested properties, plus include-style expansion
• Query formats: Generic, JSON, DSL, JQL-lite, Syncfusion, Laravel Spatie
• EF Core friendly: expression-tree based, provider-translatable

Filtering & Query Formats

DynamicQueryable parses incoming query parameters into a unified model (QueryOptions, FilterGroup, FilterCondition). Operator behavior is consistent across formats.

Generic (indexed)

Simple filter

?filter[0].field=Name
&filter[0].operator=contains
&filter[0].value=john

Top-level logic (AND/OR)

?logic=or
&filter[0].field=City&filter[0].operator=eq&filter[0].value=Berlin
&filter[1].field=City&filter[1].operator=eq&filter[1].value=Paris

JSON (nested groups)

Advanced nested logic

?filter={
  "logic":"and",
  "filters":[
    {
      "logic":"or",
      "filters":[
        {"field":"City","operator":"eq","value":"London"},
        {"field":"City","operator":"eq","value":"Berlin"}
      ]
    },
    {"field":"Age","operator":"between","value":"25,40"}
  ]
}

DSL (compact filter string)

Use & for AND (URL-encode as %26), | for OR, parentheses for grouping:

?filter=((city:eq:London|city:eq:Berlin)%26(age:between:25,40|status:eq:Pending))

JQL-lite (query)

Use SQL-like operators with AND / OR and parentheses for grouping:

?query=(name = "john" OR name = "doe") AND age >= 20

Supports nested property paths and quoted values:

?query=email = "ops@acmeretail.com" AND orders.number = "ORD-2026-0002" AND orders.items.quantity > 2

Supported JQL operators:

• = != > >= < <=
• CONTAINS
• IN (...) and NOT IN (...)

Unlike DSL/JSON malformed-input handling, invalid JQL syntax is surfaced as a parse exception to callers.

Syncfusion

?where[0][field]=Name
&where[0][operator]=contains
&where[0][value]=john
&sorted[0][name]=Age
&sorted[0][direction]=descending
&skip=0
&take=10

Use condition=and|or for top-level logic.

Laravel Spatie

Implicit AND (default Spatie behavior)

?filter[name]=Alice Johnson
&filter[status]=Active

Nested grouping

?filter[or][0][name]=john
&filter[or][1][name]=doe

Explicit operator support (extension)

?filter[name][operator]=contains
&filter[name][value]=john

(Works inside nested and/or groups as well.)

Operators

Nested & Collections

Nested property paths

Dot-notation works across filtering and projection:

?filter[0].field=Profile.Bio&filter[0].operator=contains&filter[0].value=dev
&select=Id,Profile.Bio

Collection paths (parent filtering)

Filtering on a collection navigation (e.g. Orders.Number) uses Any(...) / EXISTS semantics for the parent:

?filter[0].field=Orders.Number
&filter[0].operator=eq
&filter[0].value=SO-001

Conceptually:

x => x.Orders.Any(o => o.Number == "SO-001")

Filtered child collections (when selected)

When a request filters on a collection path and that collection is also projected, the returned child collection is filtered to match the same criteria (projection-based, EF Core translatable):

?filter[0].field=Orders.Number&filter[0].operator=eq&filter[0].value=SO-001
&select=Id,Orders.Number

Conceptually:

x => new {
  x.Id,
  Orders = x.Orders
    .Where(o => o.Number == "SO-001")
    .Select(o => new { o.Number })
    .ToList()
}

API Methods

Apply filter/sort/paging

using DynamicQueryable.Extensions;

var options = QueryOptionsParser.Parse(Request.Query);

var query = _context.Users.AsQueryable()
    .ApplyQueryOptions(options); // filter + sort + paging

var data = await query.ToListAsync();

Apply projection (select / include / JSON select tree)

var projected = await _context.Users
    .ApplyQueryOptions(options)
    .ApplySelect(options)
    .ToListAsync(); // IQueryable<object>

Return results with metadata

var result = _context.Users.ToQueryResult(options);
// result.Data, result.TotalCount, result.Page, result.PageSize

Return projected results with metadata

var result = _context.Users.ToProjectedQueryResult(options);
// result.Data is List<object> shaped by Select/Includes/JSON select tree

EF Core async helpers (package: DynamicQueryable.Extensions.EFCore)

var result = await _context.Users.ToQueryResultAsync(options, cancellationToken);
var projected = await _context.Users.ToProjectedQueryResultAsync(options, cancellationToken);

ASP.NET Integration (optional)

You can parse directly in controllers/minimal APIs:

public abstract class BaseController : ControllerBase
{
    protected QueryOptions Options => QueryOptionsParser.Parse(Request.Query);
}

License

MIT License