339 lines
9.4 KiB
HTML
339 lines
9.4 KiB
HTML
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This is <a href="."><em>Devhints.io cheatsheets</em></a> — a collection of cheatsheets I've written.
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<div class='post-list -single -cheatsheet'>
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<div class='post-item'>
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<div class='post-headline -cheatsheet'>
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<p class='prelude'><span></span></p>
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<h1><span>Form helpers</span></h1>
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<div class='post-content -cheatsheet'>
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<h2 id="form-builder">Form builder</h2>
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<pre><code class="language-haml">- form_for @post do |f|
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</code></pre>
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<p>Field names will be prefixed with <code>post</code> (the class name), and values will be derived from this object (eg, <code>f.text_field :name</code> from <code>@post.name</code>).</p>
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<h3 id="options">Options</h3>
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<pre><code class="language-haml">- form_for @post, |
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url: { method: 'put', action: 'create' }, |
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html: { class: 'nifty_form' } |
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do |f|
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</code></pre>
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<h2 id="fields">Fields</h2>
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<h3 id="text">Text</h3>
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<pre><code class="language-rb">f.text_field :title
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f.text_area :body, size: '60x12'
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</code></pre>
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<h3 id="checkbox">Checkbox</h3>
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<pre><code class="language-rb">f.check_box :remember_me
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f.label :remember_me, "Remember me"
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</code></pre>
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<h3 id="radio">Radio</h3>
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<pre><code class="language-rb">f.radio_button :gender, 'male'
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f.label :gender_male, "Male"
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f.radio_button :gender, 'female'
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f.label :gender_female, "Female"
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</code></pre>
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<h3 id="label">Label</h3>
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<pre><code class="language-rb">f.label :title
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f.label :title, "Title"
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f.label :title, "Title", class: "title"
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f.label(:post, :terms) { "Accept terms" }
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</code></pre>
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<h3 id="submit-button">Submit button</h3>
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<pre><code class="language-rb">f.submit "Create"
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</code></pre>
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<h3 id="hidden-fields">Hidden fields</h3>
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<pre><code class="language-rb">f.hidden_field :id
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</code></pre>
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<h2 id="misc">Misc</h2>
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<h3 id="the-model">The model</h3>
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<pre><code class="language-ruby">f.object
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</code></pre>
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<h3 id="fields-for">Fields for</h3>
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<pre><code class="language-haml">= form_for @post do |f|
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= fields_for :author, @post.author do |ff|
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= ff.text_field :name
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</code></pre>
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<h3 id="select-dropdowns">Select dropdowns</h3>
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<pre><code class="language-rb">f.select :city_id, [['Lisbon',1], ['Madrid',2], ...], 4
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# (4 = selected)
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options_for_select [['Lisbon',1], ['Madrid',2], ...], 4
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# Just makes <option> tags
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</code></pre>
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<h3 id="collections">Collections</h3>
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<pre><code>f.collection_radio_buttons :author_id, Author.all, :id, :name_with_initial
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f.collection_select :city_id, City.all, :id, :name
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# (field, collection, value_key, label_key)
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</code></pre>
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<h3 id="time-select">Time select</h3>
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<pre><code class="language-rb">f.time_zone_select :time_zone
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f.date_select :birthday
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</code></pre>
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<h3 id="i18n">I18n</h3>
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<pre><code class="language-yaml">helpers:
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submit:
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# helpers.submit.<action>
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create: "Create a %{model}"
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update: "Confirm changes to %{model}"
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# helpers.submit.<model>.<action>
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article:
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create: "Publish article"
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update: "Update article"
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# helpers.label.<model>.<field>
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label:
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post:
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body: "Your body text"
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</code></pre>
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<h3 id="outside-f">Outside <code>f</code></h3>
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<pre><code class="language-rb">radio_button("post", "category", "rails")
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radio_button("post", "category", "java")
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# picks from @post.category
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# <input type="radio" id="post_category_rails" name="post[category]"
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# value="rails" checked="checked" />
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</code></pre>
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<h3 id="reference">Reference</h3>
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<pre><code class="language-rb">select(method, choices = nil, options = {}, html_options = {}, &block)
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choices == [ ['label', id], ... ]
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submit(value=nil, options={})
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</code></pre>
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<div class="about-the-site">
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<p class='blurb'>
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<strong><a href=".">Devhints.io cheatsheets</a></strong> is a collection of cheatsheets I've written over the years.
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Suggestions and corrections? <a href='https://github.com/rstacruz/cheatsheets/issues/907'>Send them in</a>.
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<i class='fleuron'></i>
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I'm <a href="http://ricostacruz.com">Rico Sta. Cruz</a>.
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Check out my <a href="http://ricostacruz.com/til">Today I learned blog</a> for more.
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