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(bugfix): case insensitive comparison predicate should lower case only string type

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This commit is contained in:
Maksym Sadovnychyy 2025-01-03 01:40:58 +01:00
parent 85f1d7c89f
commit 0c12bdc899
2 changed files with 29 additions and 10 deletions
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2
src/MaksIT.Core/MaksIT.Core.csproj
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@ -8,7 +8,7 @@
<!-- NuGet package metadata -->
<PackageId>MaksIT.Core</PackageId>
<Version>1.3.1</Version>
<Version>1.3.2</Version>
<Authors>Maksym Sadovnychyy</Authors>
<Company>MAKS-IT</Company>
<Product>MaksIT.Core</Product>

37
src/MaksIT.Core/Webapi/Models/PagedRequest.cs
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@ -15,16 +15,35 @@ public class PagedRequest : RequestModelBase {
if (string.IsNullOrWhiteSpace(Filters))
return x => true; // Returns an expression that doesn't filter anything.
// Adjust Filters to make Contains, StartsWith, EndsWith, ==, and != case-insensitive
string adjustedFilters = Filters
.Replace(".Contains(", ".ToLower().Contains(")
.Replace(".StartsWith(", ".ToLower().StartsWith(")
.Replace(".EndsWith(", ".ToLower().EndsWith(")
.Replace("==", ".ToLower() ==")
.Replace("!=", ".ToLower() !=");
// Get the type of T
var type = typeof(T);
// Ensure values are also transformed to lowercase
adjustedFilters = Regex.Replace(adjustedFilters, "\"([^\"]+)\"", m => $"\"{m.Groups[1].Value.ToLower()}\"");
// Adjust Filters to make Contains, StartsWith, EndsWith, ==, and != case-insensitive
string adjustedFilters = Filters;
// Regex to find property names and methods
adjustedFilters = Regex.Replace(adjustedFilters, @"(\w+)\.(Contains|StartsWith|EndsWith)\(\""(.*?)\""\)", m => {
var propertyName = m.Groups[1].Value;
var method = m.Groups[2].Value;
var value = m.Groups[3].Value;
var property = type.GetProperty(propertyName);
if (property != null && property.PropertyType == typeof(string)) {
return $"{propertyName}.ToLower().{method}(\"{value.ToLower()}\")";
}
return m.Value;
});
// Regex to find equality and inequality comparisons
adjustedFilters = Regex.Replace(adjustedFilters, @"(\w+)\s*(==|!=)\s*\""(.*?)\""", m => {
var propertyName = m.Groups[1].Value;
var comparison = m.Groups[2].Value;
var value = m.Groups[3].Value;
var property = type.GetProperty(propertyName);
if (property != null && property.PropertyType == typeof(string)) {
return $"{propertyName}.ToLower() {comparison} \"{value.ToLower()}\"";
}
return m.Value;
});
// Parse the adjusted filter string into a dynamic lambda expression
var predicate = DynamicExpressionParser.ParseLambda<T, bool>(