blocks|key|1479523|text|通过使用Ecto.Schema和虚拟字段，您可以使用变更集而不需要数据库的支持：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1479524|defmodule+ContactForm+do++++++
++use+Ecto.Schema

++schema+""+do
++++field+:email,+:string,+virtual:+true
++++field+:name,+:string,+virtual:+true
++++field+:body,+:binary,+virtual:+true
++end

++def+changeset(model,+params+\\+:empty)+do
++++model
++++%7C>+cast(params,+["email",+"name",+"binary"],+[])
++++#%7C>+validate_length(:body,+min:+5)+-+any+validations,+etc.+
++end+++
end|code-block|syntax|javascript|1479525|有了这样一个模块，你就可以像对待模型一样对待它，你的表单将被验证等等。然后你可以将整个%25ContactForm{}结构传递给你的邮件发送程序函数。|style|CODE|1479526|entityMap|0|LINK|mutability|MUTABLE|url|https://hexdocs.pm/ecto/Ecto.Schema.html^0|4|B|0|0|0|17|E|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@$A|10|B|11|K|L]]|9|@]|C|$]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

You can use a changeset without it being backed by the database by using <a href="https://hexdocs.pm/ecto/Ecto.Schema.html">Ecto.Schema</a> and virtual fields:

<pre><code>defmodule ContactForm do 
 use Ecto.Schema

 schema "" do
 field :email, :string, virtual: true
 field :name, :string, virtual: true
 field :body, :binary, virtual: true
 end

 def changeset(model, params \\ :empty) do
 model
 |&gt; cast(params, ["email", "name", "binary"], [])
 #|&gt; validate_length(:body, min: 5) - any validations, etc. 
 end 
end
</code></pre>

With a module like this you can simply treat it as you would a model and your form will be validated, etc. You can then pass the whole <code>%ContactForm{}</code> struct to your mailer function for sending the email.

blocks|key|2033890|text|我使用以下方法:模式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2033891|defmodule+App.Form.ContactForm+do
++use+Ecto.Schema
++import+Ecto.Changeset

++schema+""+do
++++field+:name,+:string,+virtual:+true
++++field+:email,+:string,+virtual:+true
++++field+:phone,+:string,+virtual:+true
++++field+:body,+:binary,+virtual:+true
++end

++def+changeset(model,+params)+do
++++model
++++%7C>+cast(params,+[:name,+:email,+:phone,+:body])
++++%7C>+validate_required([:name,+:phone])
++end
end|code-block|syntax|javascript|2033892|上下文：|2033893|defmodule+App.Form+do
++alias+App.Form.ContactForm

++def+change_contact(%25ContactForm{}+=+contact+\\+%25ContactForm{})+do
++++ContactForm.changeset(contact,+%25{})
++end

++def+create_contact(attrs+\\+%25{})+do
++++contact+=+ContactForm.changeset(%25ContactForm{},+attrs)
++++contact+=+Map.merge(contact,+%25{action:+:create})+#+because+we+don't+have+a+Repo+call,+we+need+to+manually+set+the+action.
++++if+contact.valid?+do
++++++#+send+email+or+whatever+here.
++++end
++++contact
++end
end|2033894|在html中：|2033895|<%25=+form_for+@contact,+Routes.contact_path(@conn,+:contact),+[as:+"contact"],+fn+f+->+%25>
#+the+form.+I+leave+styling+up+to+you.+Errors+should+be+working+because+we+set+the+action.|2033896|在路由器中：|2033897|post+"/contact",+PageController,+:contact,+as:+:contact|2033898|以及控制器中的两个必要功能：|2033899|++def+index(conn,+_params)+do
++++render(conn,+"index.html",+contact:+App.Form.change_contact())
++end

++def+contact(conn,+%25{"contact"+=>+contact_params})+do
++++with+changeset+<-+App.Form.create_contact(contact_params),
+++++++++true+<-+changeset.valid?
++++++do
++++++conn
++++++%7C>+put_flash(:success,+gettext("We+will+get+back+to+you+shortly."))
++++++%7C>+render("index.html",+contact:+changeset)
++++else
++++++_+->
++++++conn
++++++%7C>+put_flash(:error,+gettext("Please+check+the+errors+in+the+form."))
++++++%7C>+render("index.html",+contact:+App.Form.create_contact(contact_params))
++++end

++end|2033900|这是一个联系人表单的大量代码，这就是为什么我想发布这个，这样你就不用重写这个了。希望能帮上忙。|2033901|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|16|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|18|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|19|8|@]|9|@]|A|$E|F]]|$1|W|3|X|5|6|7|1A|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|Z|$]]

I use the following:
Schema:

<pre><code>defmodule App.Form.ContactForm do
 use Ecto.Schema
 import Ecto.Changeset

 schema "" do
 field :name, :string, virtual: true
 field :email, :string, virtual: true
 field :phone, :string, virtual: true
 field :body, :binary, virtual: true
 end

 def changeset(model, params) do
 model
 |&gt; cast(params, [:name, :email, :phone, :body])
 |&gt; validate_required([:name, :phone])
 end
end
</code></pre>

Context:

<pre><code>defmodule App.Form do
 alias App.Form.ContactForm

 def change_contact(%ContactForm{} = contact \\ %ContactForm{}) do
 ContactForm.changeset(contact, %{})
 end

 def create_contact(attrs \\ %{}) do
 contact = ContactForm.changeset(%ContactForm{}, attrs)
 contact = Map.merge(contact, %{action: :create}) # because we don't have a Repo call, we need to manually set the action.
 if contact.valid? do
 # send email or whatever here.
 end
 contact
 end
end
</code></pre>

In the html:

<pre><code>&lt;%= form_for @contact, Routes.contact_path(@conn, :contact), [as: "contact"], fn f -&gt; %&gt;
# the form. I leave styling up to you. Errors should be working because we set the action.
</code></pre>

In the router:

<pre><code>post "/contact", PageController, :contact, as: :contact
</code></pre>

And the two necessary functions in the controller:

<pre><code> def index(conn, _params) do
 render(conn, "index.html", contact: App.Form.change_contact())
 end

 def contact(conn, %{"contact" =&gt; contact_params}) do
 with changeset &lt;- App.Form.create_contact(contact_params),
 true &lt;- changeset.valid?
 do
 conn
 |&gt; put_flash(:success, gettext("We will get back to you shortly."))
 |&gt; render("index.html", contact: changeset)
 else
 _ -&gt;
 conn
 |&gt; put_flash(:error, gettext("Please check the errors in the form."))
 |&gt; render("index.html", contact: App.Form.create_contact(contact_params))
 end

 end
</code></pre>

That's a lot of code for a contact form, that's why I wanted to post this so that you won't have to rewrite this. I hope it helps.

I'm just getting started with Phoenix and I'm going through the <a href="http://www.phoenixframework.org/docs/sending-email" rel="nofollow">Sending Email</a> &amp; also viewing the <a href="http://hexdocs.pm/phoenix_html/Phoenix.HTML.Form.html" rel="nofollow">Phoenix.HTML.Form</a> docs. I've been able to set up everything correctly based on the guide and have sent a test email via iex but I've yet to figure out how to send an email without using the @changset in the form. I was under the impression that using @changest is only needed when I'm using model data. For my scenario I'm simply trying to capture a name, email and message that gets sent to me when the user clicks send.

Help greatly appreciated!

Phoenix Contact Form

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我刚刚开始学习凤凰城，我正在浏览 &也可以查看文档。我已经能够根据指南正确设置所有内容，并通过 in 发送了一封测试邮件，但我还没有弄清楚如何在不使用表单中的@changset的情况下发送电子邮件。我的印象是，只有当我使用模型数据时，才需要使用@changest。对于我的场景，我只是试图捕获一个名称，电子邮件和消息，当...

问菲尼克斯接触形式
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问菲尼克斯接触形式EN