check-gen

Generates validation code for different types including nested structs, maps, slices.
Returns errors as formatted []string: field_snake_case::is_required, field_snake_case::min_length_is
See examples for more info

Any ideas and help are welcome

Installation

go get -v github.com/serajam/check-gen

Usage

It is possible to validate:

• int, *int
• int8, *int8
• int16, *int16
• int32, *int32
• int64, *int64
• []int, []*int
• []int8, []*int8
• []int16, []*int16
• []int32, []*int32
• []int64, []*int64
• float32, *float32
• float64, *float64
• []float32, []*float32
• []float64, []*float64
• string, *string
• *bool
• []byte , []*byte
• struct, *struct
• []struct, []*struct
• map[string]type
• custom types

1. Add tags check:"" for every field that's needs checks. For example: check:"required,min=1" See available tags below
2. Run check-gen with path as last argument. Also, you can add --copyright=<string> or -c <string> for add a copyright to generated files
3. You should see validation.go with validation methods for every struct in every package that was specified fo/r validation generator Use Validate() method to check your struct data

Tags

1. required - checks if field is set to non default value (not 0, not nil, not "", len > 0 for slices)
2. min - checks field min value
3. max - checks field max value
4. len - checks field len
5. check - add call to Validate method of nested struct
6. deep - checks every slice value calling Validate method for structs and generates validation for values of int, string types specified by tags after deep. For example required,min=1,deep,len=100 will check if slice has minimum len of 1 and also will check if every element of that slice has len exactly 100. You can use check with deep, for example required,min=1,deep,check will check if slice maximum len of 1 and add call to Validate method for each of these structs.
7. digit will check if string contains only number
8. word will check if string contains only letters, numbers, punctuation and whitespaces
9. uuid will check if string is uuid
10. password will check if string is password with len check. For example: min=8,password
11. phone will check if string is satisfy phone format with len check. Checks only digits. Returns no errors with empty string, if not need this add required tag. For example: phone=7~15

Examples

Please see examples for full list of examples