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package validation_test |
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import ( |
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"context" |
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"fmt" |
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"log" |
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"regexp" |
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"time" |
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languagepkg "github.com/muonsoft/language" |
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"github.com/muonsoft/validation" |
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"github.com/muonsoft/validation/it" |
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"github.com/muonsoft/validation/message/translations/russian" |
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"github.com/muonsoft/validation/validator" |
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"golang.org/x/text/feature/plural" |
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"golang.org/x/text/language" |
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"golang.org/x/text/message/catalog" |
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) |
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func ExampleValue() { |
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v := "" |
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err := validator.Validate(validation.Value(v, it.IsNotBlank())) |
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fmt.Println(err) |
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// Output: |
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// violation: This value should not be blank. |
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} |
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func ExamplePropertyValue() { |
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v := Book{Title: ""} |
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err := validator.Validate( |
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validation.PropertyValue("title", v.Title, it.IsNotBlank()), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation at 'title': This value should not be blank. |
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} |
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func ExampleBool() { |
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v := false |
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err := validator.Validate(validation.Bool(&v, it.IsTrue())) |
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fmt.Println(err) |
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// Output: |
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// violation: This value should be true. |
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} |
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func ExampleBoolProperty() { |
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v := struct { |
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IsPublished bool |
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}{ |
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IsPublished: false, |
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} |
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err := validator.Validate( |
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validation.BoolProperty("isPublished", &v.IsPublished, it.IsTrue()), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation at 'isPublished': This value should be true. |
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} |
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func ExampleNumber() { |
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v := 5 |
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err := validator.Validate(validation.Number(&v, it.IsGreaterThanInteger(5))) |
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fmt.Println(err) |
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// Output: |
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// violation: This value should be greater than 5. |
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} |
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func ExampleNumberProperty() { |
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v := struct { |
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Count int |
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}{ |
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Count: 5, |
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} |
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err := validator.Validate( |
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validation.NumberProperty("count", &v.Count, it.IsGreaterThanInteger(5)), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation at 'count': This value should be greater than 5. |
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} |
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func ExampleString() { |
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v := "" |
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err := validator.Validate(validation.String(&v, it.IsNotBlank())) |
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fmt.Println(err) |
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// Output: |
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// violation: This value should not be blank. |
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} |
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func ExampleStringProperty() { |
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v := Book{Title: ""} |
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err := validator.Validate( |
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validation.StringProperty("title", &v.Title, it.IsNotBlank()), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation at 'title': This value should not be blank. |
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} |
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func ExampleIterable() { |
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v := make([]string, 0) |
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err := validator.Validate(validation.Iterable(v, it.IsNotBlank())) |
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fmt.Println(err) |
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// Output: |
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// violation: This value should not be blank. |
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} |
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func ExampleIterableProperty() { |
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v := Product{Tags: []string{}} |
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err := validator.Validate( |
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validation.IterableProperty("tags", v.Tags, it.IsNotBlank()), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation at 'tags': This value should not be blank. |
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} |
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func ExampleCountable() { |
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s := []string{"a", "b"} |
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err := validator.Validate(validation.Countable(len(s), it.HasMinCount(3))) |
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fmt.Println(err) |
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// Output: |
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// violation: This collection should contain 3 elements or more. |
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} |
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func ExampleCountableProperty() { |
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v := Product{Tags: []string{"a", "b"}} |
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err := validator.Validate( |
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validation.CountableProperty("tags", len(v.Tags), it.HasMinCount(3)), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation at 'tags': This collection should contain 3 elements or more. |
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} |
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func ExampleTime() { |
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t := time.Now() |
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compared, _ := time.Parse(time.RFC3339, "2006-01-02T15:00:00Z") |
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err := validator.Validate( |
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validation.Time(&t, it.IsEarlierThan(compared)), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation: This value should be earlier than 2006-01-02T15:00:00Z. |
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} |
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func ExampleTimeProperty() { |
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v := struct { |
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CreatedAt time.Time |
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}{ |
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CreatedAt: time.Now(), |
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} |
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compared, _ := time.Parse(time.RFC3339, "2006-01-02T15:00:00Z") |
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err := validator.Validate( |
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validation.TimeProperty("createdAt", &v.CreatedAt, it.IsEarlierThan(compared)), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation at 'createdAt': This value should be earlier than 2006-01-02T15:00:00Z. |
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} |
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func ExampleEach() { |
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v := []string{""} |
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err := validator.Validate(validation.Each(v, it.IsNotBlank())) |
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fmt.Println(err) |
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// Output: |
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// violation at '[0]': This value should not be blank. |
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} |
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func ExampleEachProperty() { |
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v := Product{Tags: []string{""}} |
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err := validator.Validate( |
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validation.EachProperty("tags", v.Tags, it.IsNotBlank()), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation at 'tags[0]': This value should not be blank. |
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} |
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func ExampleEachString() { |
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v := []string{""} |
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err := validator.Validate(validation.EachString(v, it.IsNotBlank())) |
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fmt.Println(err) |
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// Output: |
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// violation at '[0]': This value should not be blank. |
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} |
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func ExampleEachStringProperty() { |
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v := Product{Tags: []string{""}} |
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err := validator.Validate( |
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validation.EachStringProperty("tags", v.Tags, it.IsNotBlank()), |
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) |
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fmt.Println(err) |
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// Output: |
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// violation at 'tags[0]': This value should not be blank. |
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} |
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func ExampleNewCustomStringConstraint() { |
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validate := func(s string) bool { |
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return s == "valid" |
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} |
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constraint := validation.NewCustomStringConstraint( |
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validate, |
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"ExampleConstraint", // constraint name |
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"exampleCode", // violation code |
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"Unexpected value.", // violation message template |
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) |
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s := "foo" |
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err := validator.ValidateString(&s, constraint) |
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fmt.Println(err) |
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// Output: |
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// violation: Unexpected value. |
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} |
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func ExampleConditionalConstraint_Then() { |
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v := "foo" |
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err := validator.ValidateString( |
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&v, |
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validation.When(true). |
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Then( |
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it.Matches(regexp.MustCompile(`^\w+$`)), |
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), |
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) |
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fmt.Println(err) |
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// Output: |
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// <nil> |
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} |
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func ExampleConditionalConstraint_Else() { |
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v := "123" |
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err := validator.ValidateString( |
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&v, |
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validation.When(false). |
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Then( |
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it.Matches(regexp.MustCompile(`^\w+$`)), |
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). |
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Else( |
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it.Matches(regexp.MustCompile(`^\d+$`)), |
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), |
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) |
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fmt.Println(err) |
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// Output: |
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// <nil> |
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} |
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func ExampleSequentially() { |
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title := "bar" |
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err := validator.ValidateString( |
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&title, |
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validation.Sequentially( |
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it.IsBlank(), |
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it.HasMinLength(5), |
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), |
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) |
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violations := err.(validation.ViolationList) |
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for _, violation := range violations { |
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fmt.Println(violation.Error()) |
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} |
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// Output: |
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// violation: This value should be blank. |
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} |
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func ExampleValidator_Validate_basicValidation() { |
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s := "" |
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validator, err := validation.NewValidator() |
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if err != nil { |
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log.Fatal(err) |
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} |
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err = validator.Validate(validation.String(&s, it.IsNotBlank())) |
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violations := err.(validation.ViolationList) |
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for _, violation := range violations { |
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fmt.Println(violation.Error()) |
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} |
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// Output: |
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// violation: This value should not be blank. |
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} |
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func ExampleValidator_Validate_singletonValidator() { |
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s := "" |
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err := validator.Validate(validation.String(&s, it.IsNotBlank())) |
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violations := err.(validation.ViolationList) |
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for _, violation := range violations { |
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fmt.Println(violation.Error()) |
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} |
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// Output: |
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// violation: This value should not be blank. |
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} |
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func ExampleValidator_ValidateString_shorthandAlias() { |
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s := "" |
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300
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err := validator.ValidateString(&s, it.IsNotBlank()) |
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violations := err.(validation.ViolationList) |
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for _, violation := range violations { |
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fmt.Println(violation.Error()) |
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} |
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// Output: |
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// violation: This value should not be blank. |
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} |
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310
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func ExampleValidator_Validate_conditionalValidationOnConstraint() { |
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notes := []struct { |
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Title string |
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IsPublic bool |
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Text string |
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}{ |
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{Title: "published note", IsPublic: true, Text: "text of published note"}, |
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{Title: "draft note", IsPublic: true, Text: ""}, |
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} |
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320
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for i, note := range notes { |
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err := validator.Validate( |
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validation.StringProperty("name", ¬e.Title, it.IsNotBlank()), |
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validation.StringProperty("text", ¬e.Text, it.IsNotBlank().When(note.IsPublic)), |
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) |
325
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if err != nil { |
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violations := err.(validation.ViolationList) |
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for _, violation := range violations { |
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fmt.Printf("error on note %d: %s", i, violation.Error()) |
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} |
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} |
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} |
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333
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// Output: |
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// error on note 1: violation at 'text': This value should not be blank. |
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} |
336
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337
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func ExampleValidator_Validate_passingPropertyPathViaOptions() { |
338
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s := "" |
339
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340
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err := validator.Validate( |
341
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validation.String( |
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&s, |
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validation.PropertyName("properties"), |
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validation.ArrayIndex(1), |
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validation.PropertyName("tag"), |
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it.IsNotBlank(), |
347
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), |
348
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) |
349
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350
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violation := err.(validation.ViolationList)[0] |
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fmt.Println("property path:", violation.PropertyPath().String()) |
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// Output: |
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// property path: properties[1].tag |
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} |
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func ExampleValidator_Validate_propertyPathWithScopedValidator() { |
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s := "" |
358
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359
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err := validator. |
360
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AtProperty("properties"). |
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AtIndex(1). |
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AtProperty("tag"). |
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Validate(validation.String(&s, it.IsNotBlank())) |
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365
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violation := err.(validation.ViolationList)[0] |
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fmt.Println("property path:", violation.PropertyPath().String()) |
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// Output: |
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// property path: properties[1].tag |
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} |
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371
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func ExampleValidator_Validate_propertyPathBySpecialArgument() { |
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s := "" |
373
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374
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err := validator.Validate( |
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// this is an alias for |
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// validation.String(&s, validation.PropertyName("property"), it.IsNotBlank()), |
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validation.StringProperty("property", &s, it.IsNotBlank()), |
378
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) |
379
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380
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violation := err.(validation.ViolationList)[0] |
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fmt.Println("property path:", violation.PropertyPath().String()) |
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// Output: |
383
|
|
|
// property path: property |
384
|
|
|
} |
385
|
|
|
|
386
|
|
|
func ExampleValidator_AtProperty() { |
387
|
|
|
book := &Book{Title: ""} |
388
|
|
|
|
389
|
|
|
err := validator.AtProperty("book").Validate( |
390
|
|
|
validation.StringProperty("title", &book.Title, it.IsNotBlank()), |
391
|
|
|
) |
392
|
|
|
|
393
|
|
|
violation := err.(validation.ViolationList)[0] |
394
|
|
|
fmt.Println("property path:", violation.PropertyPath().String()) |
395
|
|
|
// Output: |
396
|
|
|
// property path: book.title |
397
|
|
|
} |
398
|
|
|
|
399
|
|
|
func ExampleValidator_AtIndex() { |
400
|
|
|
books := []Book{{Title: ""}} |
401
|
|
|
|
402
|
|
|
err := validator.AtIndex(0).Validate( |
403
|
|
|
validation.StringProperty("title", &books[0].Title, it.IsNotBlank()), |
404
|
|
|
) |
405
|
|
|
|
406
|
|
|
violation := err.(validation.ViolationList)[0] |
407
|
|
|
fmt.Println("property path:", violation.PropertyPath().String()) |
408
|
|
|
// Output: |
409
|
|
|
// property path: [0].title |
410
|
|
|
} |
411
|
|
|
|
412
|
|
|
func ExampleValidator_Validate_translationsByDefaultLanguage() { |
413
|
|
|
validator, err := validation.NewValidator( |
414
|
|
|
validation.Translations(russian.Messages), |
415
|
|
|
validation.DefaultLanguage(language.Russian), |
416
|
|
|
) |
417
|
|
|
if err != nil { |
418
|
|
|
log.Fatal(err) |
419
|
|
|
} |
420
|
|
|
|
421
|
|
|
s := "" |
422
|
|
|
err = validator.ValidateString(&s, it.IsNotBlank()) |
423
|
|
|
|
424
|
|
|
violations := err.(validation.ViolationList) |
425
|
|
|
for _, violation := range violations { |
426
|
|
|
fmt.Println(violation.Error()) |
427
|
|
|
} |
428
|
|
|
// Output: |
429
|
|
|
// violation: Значение не должно быть пустым. |
430
|
|
|
} |
431
|
|
|
|
432
|
|
|
func ExampleValidator_Validate_translationsByArgument() { |
433
|
|
|
validator, err := validation.NewValidator( |
434
|
|
|
validation.Translations(russian.Messages), |
435
|
|
|
) |
436
|
|
|
if err != nil { |
437
|
|
|
log.Fatal(err) |
438
|
|
|
} |
439
|
|
|
|
440
|
|
|
s := "" |
441
|
|
|
err = validator.Validate( |
442
|
|
|
validation.Language(language.Russian), |
443
|
|
|
validation.String(&s, it.IsNotBlank()), |
444
|
|
|
) |
445
|
|
|
|
446
|
|
|
violations := err.(validation.ViolationList) |
447
|
|
|
for _, violation := range violations { |
448
|
|
|
fmt.Println(violation.Error()) |
449
|
|
|
} |
450
|
|
|
// Output: |
451
|
|
|
// violation: Значение не должно быть пустым. |
452
|
|
|
} |
453
|
|
|
|
454
|
|
|
func ExampleValidator_Validate_translationsByContextArgument() { |
455
|
|
|
validator, err := validation.NewValidator( |
456
|
|
|
validation.Translations(russian.Messages), |
457
|
|
|
) |
458
|
|
|
if err != nil { |
459
|
|
|
log.Fatal(err) |
460
|
|
|
} |
461
|
|
|
|
462
|
|
|
s := "" |
463
|
|
|
ctx := languagepkg.WithContext(context.Background(), language.Russian) |
464
|
|
|
err = validator.Validate( |
465
|
|
|
validation.Context(ctx), |
466
|
|
|
validation.String(&s, it.IsNotBlank()), |
467
|
|
|
) |
468
|
|
|
|
469
|
|
|
violations := err.(validation.ViolationList) |
470
|
|
|
for _, violation := range violations { |
471
|
|
|
fmt.Println(violation.Error()) |
472
|
|
|
} |
473
|
|
|
// Output: |
474
|
|
|
// violation: Значение не должно быть пустым. |
475
|
|
|
} |
476
|
|
|
|
477
|
|
|
func ExampleValidator_Validate_translationsByContextValidator() { |
478
|
|
|
validator, err := validation.NewValidator( |
479
|
|
|
validation.Translations(russian.Messages), |
480
|
|
|
) |
481
|
|
|
if err != nil { |
482
|
|
|
log.Fatal(err) |
483
|
|
|
} |
484
|
|
|
ctx := languagepkg.WithContext(context.Background(), language.Russian) |
485
|
|
|
validator = validator.WithContext(ctx) |
486
|
|
|
|
487
|
|
|
s := "" |
488
|
|
|
err = validator.ValidateString(&s, it.IsNotBlank()) |
489
|
|
|
|
490
|
|
|
violations := err.(validation.ViolationList) |
491
|
|
|
for _, violation := range violations { |
492
|
|
|
fmt.Println(violation.Error()) |
493
|
|
|
} |
494
|
|
|
// Output: |
495
|
|
|
// violation: Значение не должно быть пустым. |
496
|
|
|
} |
497
|
|
|
|
498
|
|
|
func ExampleValidator_Validate_customizingErrorMessage() { |
499
|
|
|
s := "" |
500
|
|
|
|
501
|
|
|
err := validator.ValidateString(&s, it.IsNotBlank().Message("this value is required")) |
502
|
|
|
|
503
|
|
|
violations := err.(validation.ViolationList) |
504
|
|
|
for _, violation := range violations { |
505
|
|
|
fmt.Println(violation.Error()) |
506
|
|
|
} |
507
|
|
|
// Output: |
508
|
|
|
// violation: this value is required |
509
|
|
|
} |
510
|
|
|
|
511
|
|
|
func ExampleValidator_Validate_translationForCustomMessage() { |
512
|
|
|
const customMessage = "tags should contain more than {{ limit }} element(s)" |
513
|
|
|
validator, err := validation.NewValidator( |
514
|
|
|
validation.Translations(map[language.Tag]map[string]catalog.Message{ |
515
|
|
|
language.Russian: { |
516
|
|
|
customMessage: plural.Selectf(1, "", |
517
|
|
|
plural.One, "теги должны содержать {{ limit }} элемент и более", |
518
|
|
|
plural.Few, "теги должны содержать более {{ limit }} элемента", |
519
|
|
|
plural.Other, "теги должны содержать более {{ limit }} элементов"), |
520
|
|
|
}, |
521
|
|
|
}), |
522
|
|
|
) |
523
|
|
|
if err != nil { |
524
|
|
|
log.Fatal(err) |
525
|
|
|
} |
526
|
|
|
|
527
|
|
|
var tags []string |
528
|
|
|
err = validator.Validate( |
529
|
|
|
validation.Language(language.Russian), |
530
|
|
|
validation.Iterable(tags, it.HasMinCount(1).MinMessage(customMessage)), |
531
|
|
|
) |
532
|
|
|
|
533
|
|
|
violations := err.(validation.ViolationList) |
534
|
|
|
for _, violation := range violations { |
535
|
|
|
fmt.Println(violation.Error()) |
536
|
|
|
} |
537
|
|
|
// Output: |
538
|
|
|
// violation: теги должны содержать 1 элемент и более |
539
|
|
|
} |
540
|
|
|
|