R e i k i

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Download the contents of this package in one zip archive (6. BraamsThe R e i k i TeamKent McPhersonHideo Umekilatex-tools. This guide focuses on the interaction between Controller and View in the Model-View-Controller triangle. As you know, the Controller is responsible for orchestrating the whole process of handling a request in Rails, though it normally hands r e i k i any heavy code to the Model.

But then, when it's time to send a response back to the user, the Controller hands things off to the View.

It's that handoff that is the subject of this guide. In broad strokes, this involves deciding what should be sent as the response and calling an appropriate method to create that response.

If the response is a full-blown view, Rails also does some extra work to wrap the view in a layout and possibly to pull in partial views. You'll see all of those paths later in this guide. You've heard that Rails promotes "convention over configuration". Default rendering is an excellent example chestnut r e i k i. By default, controllers in Rails automatically render views with names that correspond to valid routes.

Books are coming soon. This guide does not dig into that process, but it's important to know that the file extension on your view controls the choice of template handler. Levodopa Inhalation Powder (Inbrija)- Multum are a variety of ways to customize the behavior of render.

You can render the default view for a Rails template, or a specific template, or a file, or inline code, or nothing at all. Alter bayer can render text, JSON, or XML. You can specify the content type or HTTP status of the rendered response as well. This method takes exactly the same options as render, but it returns a string instead of sending a response back to the browser.

If you want to be explicit, you can use the :template option r e i k i was required on Rails 2. In fact, in the BooksController class, inside of the update action where we want to render the edit template if the book does not update successfully, all of the following render calls would all render 12 mg edit. The render method can do without a view completely, if you're willing to use the :inline option to supply ERB as part of the method call.

This r e i k i perfectly valid:render inline: "" render inline: "" Copy There is seldom any good reason to use this option. Mixing ERB into your controllers defeats the MVC orientation of Rails and will make it harder for other developers to follow the logic of your project. Use a separate erb view instead. By default, inline rendering uses ERB. You can force it to use Builder instead with the :type option:render inline: "xml. By default, if you use the :plain option, the text is rendered without using the current layout.

If you want Rails to put the text into the current layout, you need to add the layout: true option and use the. You can send an HTML string back to the browser by using the :html option to render:render html: helpers. However, you might want to consider moving it to a template file if the markup is complex.

JSON is a JavaScript data format used by many Ajax libraries. You can send a raw content back to the browser, without setting any content type, by using the :body option boy puberty render:render body: "raw" render body: "raw" Copy This option should be used only if you don't care about the content type of the response. Using :plain or :html might be more r e i k i most of the time. Rails r e i k i render a raw file from an absolute path.

This is useful for conditionally rendering static files like error pages.

Further...

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