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package validation |
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// WhenArgument is used to build conditional validation. Use the When function to initiate a conditional check. |
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// If the condition is true, then the arguments passed through the Then function will be processed. |
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// Otherwise, the arguments passed through the Else function will be processed. |
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type WhenArgument struct { |
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isTrue bool |
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options []Option |
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thenArguments []Argument |
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elseArguments []Argument |
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} |
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// When function is used to initiate conditional validation. |
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// If the condition is true, then the arguments passed through the Then function will be processed. |
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// Otherwise, the arguments passed through the Else function will be processed. |
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func When(isTrue bool) WhenArgument { |
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return WhenArgument{isTrue: isTrue} |
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} |
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// Then function is used to set a sequence of arguments to be processed if the condition is true. |
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func (arg WhenArgument) Then(arguments ...Argument) WhenArgument { |
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arg.thenArguments = arguments |
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return arg |
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} |
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// Else function is used to set a sequence of arguments to be processed if a condition is false. |
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func (arg WhenArgument) Else(arguments ...Argument) WhenArgument { |
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arg.elseArguments = arguments |
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return arg |
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} |
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// With returns a copy of WhenArgument with appended options. |
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func (arg WhenArgument) With(options ...Option) WhenArgument { |
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arg.options = append(arg.options, options...) |
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return arg |
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} |
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func (arg WhenArgument) setUp(ctx *executionContext) { |
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ctx.addValidator(arg.options, func(scope Scope) (*ViolationList, error) { |
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var err error |
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if arg.isTrue { |
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err = scope.Validate(arg.thenArguments...) |
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} else { |
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err = scope.Validate(arg.elseArguments...) |
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} |
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return unwrapViolationList(err) |
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}) |
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} |
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// WhenGroupsArgument is used to build conditional validation based on groups. Use the WhenGroups function |
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// to initiate a conditional check. If validation group matches to the validator one, |
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// then the arguments passed through the Then function will be processed. |
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// Otherwise, the arguments passed through the Else function will be processed. |
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type WhenGroupsArgument struct { |
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groups []string |
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options []Option |
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thenArguments []Argument |
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elseArguments []Argument |
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} |
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// WhenGroups is used to build conditional validation based on groups. If validation group matches to |
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// the validator one, then the arguments passed through the Then function will be processed. |
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// Otherwise, the arguments passed through the Else function will be processed. |
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func WhenGroups(groups ...string) WhenGroupsArgument { |
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return WhenGroupsArgument{groups: groups} |
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} |
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// Then function is used to set a sequence of arguments to be processed if the validation group is active. |
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func (arg WhenGroupsArgument) Then(arguments ...Argument) WhenGroupsArgument { |
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arg.thenArguments = arguments |
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return arg |
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} |
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// Else function is used to set a sequence of arguments to be processed if the validation group is active. |
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func (arg WhenGroupsArgument) Else(arguments ...Argument) WhenGroupsArgument { |
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arg.elseArguments = arguments |
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return arg |
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} |
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// With returns a copy of WhenArgument with appended options. |
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func (arg WhenGroupsArgument) With(options ...Option) WhenGroupsArgument { |
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arg.options = append(arg.options, options...) |
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return arg |
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} |
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func (arg WhenGroupsArgument) setUp(ctx *executionContext) { |
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ctx.addValidator(arg.options, func(scope Scope) (*ViolationList, error) { |
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var err error |
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if scope.IsIgnored(arg.groups...) { |
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err = scope.Validate(arg.elseArguments...) |
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} else { |
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err = scope.Validate(arg.thenArguments...) |
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} |
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return unwrapViolationList(err) |
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}) |
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} |
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// SequentialArgument can be used to interrupt validation process when the first violation is raised. |
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type SequentialArgument struct { |
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isIgnored bool |
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options []Option |
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arguments []Argument |
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} |
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// Sequentially function used to run validation process step-by-step. |
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func Sequentially(arguments ...Argument) SequentialArgument { |
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return SequentialArgument{arguments: arguments} |
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} |
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// With returns a copy of SequentialArgument with appended options. |
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func (arg SequentialArgument) With(options ...Option) SequentialArgument { |
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arg.options = append(arg.options, options...) |
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return arg |
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} |
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// When enables conditional validation of this argument. If the expression evaluates to false, |
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// then the argument will be ignored. |
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func (arg SequentialArgument) When(condition bool) SequentialArgument { |
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arg.isIgnored = !condition |
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return arg |
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} |
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func (arg SequentialArgument) setUp(ctx *executionContext) { |
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ctx.addValidator(arg.options, func(scope Scope) (*ViolationList, error) { |
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if arg.isIgnored { |
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return nil, nil |
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} |
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violations := &ViolationList{} |
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for _, argument := range arg.arguments { |
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err := violations.AppendFromError(scope.Validate(argument)) |
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if err != nil { |
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return nil, err |
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} |
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if violations.len > 0 { |
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return violations, nil |
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} |
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} |
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return violations, nil |
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}) |
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} |
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// AtLeastOneOfArgument can be used to set up validation process to check that the value satisfies |
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// at least one of the given constraints. The validation stops as soon as one constraint is satisfied. |
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type AtLeastOneOfArgument struct { |
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isIgnored bool |
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options []Option |
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arguments []Argument |
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} |
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// AtLeastOneOf can be used to set up validation process to check that the value satisfies |
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// at least one of the given constraints. The validation stops as soon as one constraint is satisfied. |
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func AtLeastOneOf(arguments ...Argument) AtLeastOneOfArgument { |
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return AtLeastOneOfArgument{arguments: arguments} |
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} |
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// With returns a copy of AtLeastOneOfArgument with appended options. |
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func (arg AtLeastOneOfArgument) With(options ...Option) AtLeastOneOfArgument { |
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arg.options = append(arg.options, options...) |
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return arg |
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} |
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// When enables conditional validation of this argument. If the expression evaluates to false, |
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// then the argument will be ignored. |
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func (arg AtLeastOneOfArgument) When(condition bool) AtLeastOneOfArgument { |
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arg.isIgnored = !condition |
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return arg |
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} |
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func (arg AtLeastOneOfArgument) setUp(ctx *executionContext) { |
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ctx.addValidator(arg.options, func(scope Scope) (*ViolationList, error) { |
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if arg.isIgnored { |
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return nil, nil |
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} |
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violations := &ViolationList{} |
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for _, argument := range arg.arguments { |
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violation := scope.Validate(argument) |
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if violation == nil { |
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return nil, nil |
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} |
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err := violations.AppendFromError(violation) |
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if err != nil { |
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return nil, err |
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} |
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} |
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return violations, nil |
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}) |
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} |
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// AllArgument can be used to interrupt validation process when the first violation is raised. |
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type AllArgument struct { |
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isIgnored bool |
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options []Option |
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arguments []Argument |
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} |
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// All runs validation for each argument. It works exactly as validator.Validate method. |
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// It can be helpful to build complex validation process. |
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func All(arguments ...Argument) AllArgument { |
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return AllArgument{arguments: arguments} |
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} |
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// With returns a copy of AllArgument with appended options. |
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func (arg AllArgument) With(options ...Option) AllArgument { |
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arg.options = append(arg.options, options...) |
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return arg |
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} |
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// When enables conditional validation of this argument. If the expression evaluates to false, |
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// then the argument will be ignored. |
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func (arg AllArgument) When(condition bool) AllArgument { |
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arg.isIgnored = !condition |
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return arg |
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} |
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func (arg AllArgument) setUp(ctx *executionContext) { |
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ctx.addValidator(arg.options, func(scope Scope) (*ViolationList, error) { |
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if arg.isIgnored { |
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return nil, nil |
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} |
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violations := &ViolationList{} |
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for _, argument := range arg.arguments { |
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err := violations.AppendFromError(scope.Validate(argument)) |
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if err != nil { |
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return nil, err |
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} |
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} |
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return violations, nil |
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}) |
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} |
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