Understand the helper method form_with

What is form_with

form_with is one of Rails helper methods and is described in the view file. This method allows you to send information.

You can use form_with to create the required HTML for your input form.

When I looked it up, it seems that the description changes slightly when the sent information is saved in the database and when it is not saved.

** When not saving to database **

ruby:xxx.html.erb


<%= form_with url: "path" do |f| %>
Form contents
<% end %>

** When saving to database **

ruby:xxx.html.erb


<%= form_with(model:Model name, local: true) do |f| %>
Form contents
<% end %>

form_with does not save data You can also use input type elements It seems that you can also use both helper methods to save the data (such as f.text_field).

Finally, I will take an excerpt of what I actually implemented today and keep it as a record.

I hope it will be helpful as a description example.

ruby:xxx.html.erb


<div class="items-sell-main">
    <h2 class="items-sell-title">Enter product information</h2>
    <%= form_with(model: @product, local: true) do |f| %>
---abridgement---
    <%= f.text_area :name, class:"items-text", id:"item-name", placeholder:"Product name (required up to 40 characters))", maxlength:"40" %>
      <div class="items-explain">
        <div class="weight-bold-text">
Product description
          <span class="indispensable">Mandatory</span>
        </div>
---abridgement---
</div>

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