| /* |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package services |
| |
| import "github.com/apache/incubator-devlake/core/errors" |
| |
| // Pagination holds the paginate information |
| type Pagination struct { |
| Page int `form:"page"` |
| PageSize int `form:"pageSize"` |
| } |
| |
| // GetPage returns current page number |
| func (p *Pagination) GetPage() int { |
| if p.Page < 1 { |
| return 1 |
| } |
| return p.Page |
| } |
| |
| // GetPageSize returns a sensible page size based on input |
| func (p *Pagination) GetPageSize() int { |
| return p.GetPageSizeOr(50) |
| } |
| |
| // GetPageSizeOr returns the page size or fallback to `defaultVal` |
| func (p *Pagination) GetPageSizeOr(defaultVal int) int { |
| if p.PageSize < 1 { |
| return defaultVal |
| } |
| return p.PageSize |
| } |
| |
| // GetSkip returns how many records should be skipped for specified page |
| func (p *Pagination) GetSkip() int { |
| return (p.GetPage() - 1) * p.GetPageSize() |
| } |
| |
| // VerifyStruct verifies given struct with `validator` |
| func VerifyStruct(v interface{}) errors.Error { |
| err := vld.Struct(v) |
| if err != nil { |
| return errors.BadInput.Wrap(err, "data verification failed") |
| } |
| return nil |
| } |