47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
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package handlers
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import (
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"errors"
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"net/http"
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"strings"
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"github.com/gin-gonic/gin"
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"github.com/go-playground/validator/v10"
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)
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// bindingError отвечает на ошибку разбора тела запроса.
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// Сырые тексты gin/validator (имена структур и тегов) наружу не уходят:
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// клиенту уходит «поле: причина», написанная понятным языком.
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func bindingError(c *gin.Context, err error) {
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var ve validator.ValidationErrors
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if errors.As(err, &ve) {
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msgs := make([]string, 0, len(ve))
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for _, fe := range ve {
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msgs = append(msgs, fe.Field()+" "+fieldMessage(fe))
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}
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c.JSON(http.StatusBadRequest, gin.H{"error": strings.Join(msgs, "; ")})
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return
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}
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// Невалидный JSON, не тот тип поля и прочее.
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid request body"})
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}
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func fieldMessage(fe validator.FieldError) string {
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switch fe.Tag() {
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case "required":
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return "is required"
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case "email":
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return "must be a valid email"
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case "min":
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return "must be at least " + fe.Param() + " characters"
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case "max":
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return "must be at most " + fe.Param() + " characters"
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case "oneof":
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return "must be one of: " + fe.Param()
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case "uuid":
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return "must be a valid UUID"
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default:
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return "is invalid"
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}
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}
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