Query is an adaptor of http query to expressions. Check adapters to convert it to sql or other expressions.
go get github.com/worldline-go/queryParse url and extract query parameters with RAW, give to query.Parse to convert it to expression.
Use an adapter to convert it to sql or other expressions.
urlStr := "http://example.com?name=foo,bar|nick=bar&age[lt]=1&sort=-age&limit=10&offset=5&fields=id,name"
parsedURL, err := url.Parse(urlStr)
// ...
query, err := query.Parse(parsedURL.RawQuery)
// ...
sql, params, err := adaptergoqu.Select(query, goqu.From("test")).ToSQL()
// ...
// SQL: SELECT "id", "name" FROM "test" WHERE ((("name" IN ('foo', 'bar')) OR ("nick" = 'bar')) AND ("age" < '1')) ORDER BY "age" DESC LIMIT 10 OFFSET 5
// Params: []If some value separated by , it will be converted to IN operator.
There are a list of [ ] operators that can be used in the query string:
eq, ne, gt, lt, gte, lte, like, ilike, nlike, nilike, in, nin, is, not
limit and offset are used to limit the number of rows returned. 0 limit means no limit.
fields is used to select the fields to be returned, comma separated.
sort is used to sort the result set, can be prefixed with - to indicate descending order and comma separated to indicate multiple fields.
[] empty operator means in operator.
query.WithField is used to validate the field names.
WithNotInis used to validate the field names that are not allowed.WithInis used to validate the field names that are allowed.WithNotAllowedis used to validate the field names totally not allowed.
query.WithValues is used to validate the values of the fields.
WithNotInis used to validate the values that are not allowed.WithInis used to validate the values that are allowed.WithNotAllowedis used to validate the values totally not allowed.
query.WithValue is used to validate the values of the fields.
WithRequiredis used to validate the values that are required.WithNotEmptyis used to validate the values that are not empty.WithNotInis used to validate the values that are not allowed.WithInis used to validate the values that are allowed.WithNotAllowedis used to validate the value that are not allowed.WithOperatoris used to validate the operator that is allowed.WithNotOperatoris used to validate the operator that is not allowed.WithMaxis used to validate the maximum of value, value must be a number.WithMinis used to validate the minimum of value, value must be a number.
query.WithOffset is used to validate the offset value.
WithMaxis used to validate the maximum of offset, value must be a number.WithMinis used to validate the minimum of offset, value must be a number.WithNotAllowedis used to validate the offset value that are not allowed.
query.WithLimit is used to validate the limit value.
WithMaxis used to validate the maximum of limit, value must be a number.WithMinis used to validate the minimum of limit, value must be a number.WithNotAllowedis used to validate the limit value that are not allowed.
query.WithSort is used to validate the sort value.
WithNotInis used to validate the sort value that are not allowed.WithInis used to validate the sort value that are allowed.WithNotAllowedis used to validate the sort value that are not allowed.
Example of validation:
validator := query.NewValidator(
WithValue("member", query.WithRequired(), query.WithNotIn("O", "P", "S")),
WithValues(query.WithIn("age", "test", "member")),
WithValue("age", query.WithOperator(OperatorEq), query.WithNotOperator(OperatorIn)),
WithField(query.WithNotAllowed()),
)
// after that use it to validate
err := validator.Validate(query)
if err != nil {
// handle error
}
// or pass with when parsing
query, err := query.Parse(rawQuery, query.WithValidator(validator))
// ...