mirror of
https://gitee.com/johng/gf.git
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116 lines
3.2 KiB
Go
116 lines
3.2 KiB
Go
// Copyright 2017 gf Author(https://github.com/gogf/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package gmvc
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import (
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"sync"
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"github.com/gogf/gf/net/ghttp"
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"github.com/gogf/gf/os/gview"
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)
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// 基于控制器注册的MVC视图基类(一个请求一个视图对象，用完即销毁)
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type View struct {
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mu sync.RWMutex // 并发互斥锁
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view *gview.View // 底层视图对象
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data gview.Params // 视图数据/模板变量
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response *ghttp.Response // 数据返回对象
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}
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// 创建一个MVC请求中使用的视图对象
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func NewView(w *ghttp.Response) *View {
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return &View{
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view: gview.New(),
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data: make(gview.Params),
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response: w,
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}
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}
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// 批量绑定模板变量，即调用之后每个线程都会生效，因此有并发安全控制
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func (view *View) Assigns(data gview.Params) {
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view.mu.Lock()
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for k, v := range data {
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view.data[k] = v
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}
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view.mu.Unlock()
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}
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// 绑定模板变量，即调用之后每个线程都会生效，因此有并发安全控制
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func (view *View) Assign(key string, value interface{}) {
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view.mu.Lock()
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view.data[key] = value
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view.mu.Unlock()
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}
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// 解析模板，并返回解析后的内容
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func (view *View) Parse(file string) (string, error) {
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view.mu.RLock()
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defer view.mu.RUnlock()
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buffer, err := view.response.ParseTpl(file, view.data)
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return buffer, err
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}
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// 直接解析模板内容，并返回解析后的内容
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func (view *View) ParseContent(content string) (string, error) {
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view.mu.RLock()
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defer view.mu.RUnlock()
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buffer, err := view.response.ParseTplContent(content, view.data)
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return buffer, err
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}
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// 使用自定义方法对模板变量执行加锁修改操作
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func (view *View) LockFunc(f func(data gview.Params)) {
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view.mu.Lock()
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defer view.mu.Unlock()
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f(view.data)
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}
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// 使用自定义方法对模板变量执行加锁读取操作
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func (view *View) RLockFunc(f func(data gview.Params)) {
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view.mu.RLock()
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defer view.mu.RUnlock()
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f(view.data)
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}
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// BindFunc registers customized template function named <name>
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// with given function <function> to current view object.
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// The <name> is the function name which can be called in template content.
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func (view *View) BindFunc(name string, function interface{}) {
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view.view.BindFunc(name, function)
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}
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// BindFuncMap registers customized template functions by map to current view object.
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// The key of map is the template function name
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// and the value of map is the address of customized function.
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func (view *View) BindFuncMap(funcMap gview.FuncMap) {
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view.view.BindFuncMap(funcMap)
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}
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// 解析并显示指定模板
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func (view *View) Display(file ...string) {
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name := "index.tpl"
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if len(file) > 0 {
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name = file[0]
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}
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if content, err := view.Parse(name); err != nil {
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view.response.Write("Tpl Parsing Error: " + err.Error())
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} else {
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view.response.Write(content)
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}
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}
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// 解析并显示模板内容
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func (view *View) DisplayContent(content string) error {
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if content, err := view.ParseContent(content); err != nil {
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view.response.Write("Tpl Parsing Error: " + err.Error())
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return err
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} else {
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view.response.Write(content)
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}
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return nil
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}
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