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120 lines
4.7 KiB
120 lines
4.7 KiB
package validator
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import "reflect"
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// FieldLevel contains all the information and helper functions
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// to validate a field
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type FieldLevel interface {
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// returns the top level struct, if any
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Top() reflect.Value
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// returns the current fields parent struct, if any or
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// the comparison value if called 'VarWithValue'
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Parent() reflect.Value
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// returns current field for validation
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Field() reflect.Value
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// returns the field's name with the tag
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// name taking precedence over the fields actual name.
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FieldName() string
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// returns the struct field's name
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StructFieldName() string
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// returns param for validation against current field
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Param() string
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// GetTag returns the current validations tag name
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GetTag() string
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// ExtractType gets the actual underlying type of field value.
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// It will dive into pointers, customTypes and return you the
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// underlying value and it's kind.
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ExtractType(field reflect.Value) (value reflect.Value, kind reflect.Kind, nullable bool)
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// traverses the parent struct to retrieve a specific field denoted by the provided namespace
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// in the param and returns the field, field kind and whether is was successful in retrieving
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// the field at all.
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//
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// NOTE: when not successful ok will be false, this can happen when a nested struct is nil and so the field
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// could not be retrieved because it didn't exist.
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//
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// Deprecated: Use GetStructFieldOK2() instead which also return if the value is nullable.
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GetStructFieldOK() (reflect.Value, reflect.Kind, bool)
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// GetStructFieldOKAdvanced is the same as GetStructFieldOK except that it accepts the parent struct to start looking for
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// the field and namespace allowing more extensibility for validators.
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//
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// Deprecated: Use GetStructFieldOKAdvanced2() instead which also return if the value is nullable.
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GetStructFieldOKAdvanced(val reflect.Value, namespace string) (reflect.Value, reflect.Kind, bool)
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// traverses the parent struct to retrieve a specific field denoted by the provided namespace
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// in the param and returns the field, field kind, if it's a nullable type and whether is was successful in retrieving
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// the field at all.
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//
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// NOTE: when not successful ok will be false, this can happen when a nested struct is nil and so the field
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// could not be retrieved because it didn't exist.
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GetStructFieldOK2() (reflect.Value, reflect.Kind, bool, bool)
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// GetStructFieldOKAdvanced is the same as GetStructFieldOK except that it accepts the parent struct to start looking for
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// the field and namespace allowing more extensibility for validators.
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GetStructFieldOKAdvanced2(val reflect.Value, namespace string) (reflect.Value, reflect.Kind, bool, bool)
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}
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var _ FieldLevel = new(validate)
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// Field returns current field for validation
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func (v *validate) Field() reflect.Value {
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return v.flField
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}
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// FieldName returns the field's name with the tag
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// name taking precedence over the fields actual name.
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func (v *validate) FieldName() string {
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return v.cf.altName
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}
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// GetTag returns the current validations tag name
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func (v *validate) GetTag() string {
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return v.ct.tag
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}
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// StructFieldName returns the struct field's name
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func (v *validate) StructFieldName() string {
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return v.cf.name
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}
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// Param returns param for validation against current field
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func (v *validate) Param() string {
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return v.ct.param
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}
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// GetStructFieldOK returns Param returns param for validation against current field
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//
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// Deprecated: Use GetStructFieldOK2() instead which also return if the value is nullable.
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func (v *validate) GetStructFieldOK() (reflect.Value, reflect.Kind, bool) {
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current, kind, _, found := v.getStructFieldOKInternal(v.slflParent, v.ct.param)
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return current, kind, found
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}
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// GetStructFieldOKAdvanced is the same as GetStructFieldOK except that it accepts the parent struct to start looking for
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// the field and namespace allowing more extensibility for validators.
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//
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// Deprecated: Use GetStructFieldOKAdvanced2() instead which also return if the value is nullable.
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func (v *validate) GetStructFieldOKAdvanced(val reflect.Value, namespace string) (reflect.Value, reflect.Kind, bool) {
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current, kind, _, found := v.GetStructFieldOKAdvanced2(val, namespace)
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return current, kind, found
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}
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// GetStructFieldOK returns Param returns param for validation against current field
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func (v *validate) GetStructFieldOK2() (reflect.Value, reflect.Kind, bool, bool) {
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return v.getStructFieldOKInternal(v.slflParent, v.ct.param)
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}
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// GetStructFieldOKAdvanced is the same as GetStructFieldOK except that it accepts the parent struct to start looking for
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// the field and namespace allowing more extensibility for validators.
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func (v *validate) GetStructFieldOKAdvanced2(val reflect.Value, namespace string) (reflect.Value, reflect.Kind, bool, bool) {
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return v.getStructFieldOKInternal(val, namespace)
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}
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