render与redirect_to页面显示

本文详细介绍了Rails框架中redirect_to与render的功能差异。redirect_to用于向服务器发送新的请求,实现页面跳转;而render则负责渲染页面,不涉及重新发送请求。文章通过实例展示了如何使用这两种方法。
1.redirect_to要向服务器重新发送请求,示例代码如下:
redirect_to :action => 'show', :id => 5 
redirect_to "http://www.rubyonrails.org/"
redirect_to "/images/2.jpg"


回到上一次访问的页面:
redirect_to :back


2.render是渲染页面,并没有向服务器重新发送请求,即render仅仅渲染了一个新的模板,而没有执行相应的action。
(1)直接渲染出文本:
render :text => string

(2)直接调用某个action的模板,action_name方法在当前controller里:
render :action => action_name

(3)调用某个action的模板,action_name方法不在当前controller里:
render :action => action_name,:controller=>'.......'

(4)默认的的render, 相当于render(:action => self)
render
[17/Jun/2025 17:17:57] "GET / HTTP/1.1" 302 0 Internal Server Error: /login/ Traceback (most recent call last): File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\core\handlers\exception.py", line 55, in inner response = get_response(request) File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\core\handlers\base.py", line 197, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "C:\Users\17710\Supermarke\Member\views.py", line 11, in login return render(request, 'login.html') File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\shortcuts.py", line 25, in render content = loader.render_to_string(template_name, context, request, using=using) File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\template\loader.py", line 61, in render_to_string template = get_template(template_name, using=using) File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\template\loader.py", line 19, in get_template raise TemplateDoesNotExist(template_name, chain=chain) django.template.exceptions.TemplateDoesNotExist: login.html [17/Jun/2025 17:17:57] "GET /login/ HTTP/1.1" 500 83493 解决这个问题
最新发布
06-18
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