Module: ActionView::Helpers::FormTagHelper

Extended by:
ActiveSupport::Concern
Includes:
TextHelper, UrlHelper
Included in:
ActionView::Helpers, FormHelper, InstanceTagMethods
Defined in:
lib/action_view/helpers/form_tag_helper.rb

Overview

Provides a number of methods for creating form tags that doesn’t rely on an Active Record object assigned to the template like FormHelper does. Instead, you provide the names and values manually.

NOTE: The HTML options disabled, readonly, and multiple can all be treated as booleans. So specifying :disabled => true will give disabled="disabled".

Constant Summary

Constants included from TagHelper

TagHelper::BOOLEAN_ATTRIBUTES

Instance Method Summary collapse

Methods included from TextHelper

#auto_link, #concat, #current_cycle, #cycle, #excerpt, #highlight, #pluralize, #reset_cycle, #safe_concat, #simple_format, #truncate, #word_wrap

Methods included from SanitizeHelper

#sanitize, #sanitize_css, #strip_links, #strip_tags

Methods included from UrlHelper

#button_to, #current_page?, #link_to, #link_to_if, #link_to_unless, #link_to_unless_current, #mail_to, #url_for, #url_options

Methods included from TagHelper

#cdata_section, #content_tag, #escape_once, #tag

Methods included from CaptureHelper

#capture, #content_for, #content_for?, #flush_output_buffer, #with_output_buffer

Methods included from ActionDispatch::Routing::UrlFor

#url_for, #url_options

Methods included from ActionDispatch::Routing::PolymorphicRoutes

#polymorphic_path, #polymorphic_url

Instance Method Details

#check_box_tag(name, value = "1", checked = false, options = {}) ⇒ Object

Creates a check box form input tag.

Options

  • :disabled - If set to true, the user will not be able to use this input.

  • Any other key creates standard HTML options for the tag.

Examples

check_box_tag 'accept'
# => <input id="accept" name="accept" type="checkbox" value="1" />

check_box_tag 'rock', 'rock music'
# => <input id="rock" name="rock" type="checkbox" value="rock music" />

check_box_tag 'receive_email', 'yes', true
# => <input checked="checked" id="receive_email" name="receive_email" type="checkbox" value="yes" />

check_box_tag 'tos', 'yes', false, :class => 'accept_tos'
# => <input class="accept_tos" id="tos" name="tos" type="checkbox" value="yes" />

check_box_tag 'eula', 'accepted', false, :disabled => true
# => <input disabled="disabled" id="eula" name="eula" type="checkbox" value="accepted" />



324
325
326
327
328
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 324

def check_box_tag(name, value = "1", checked = false, options = {})
  html_options = { "type" => "checkbox", "name" => name, "id" => sanitize_to_id(name), "value" => value }.update(options.stringify_keys)
  html_options["checked"] = "checked" if checked
  tag :input, html_options
end

#email_field_tag(name, value = nil, options = {}) ⇒ Object

Creates a text field of type “email”.

Options

  • Accepts the same options as text_field_tag.



497
498
499
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 497

def email_field_tag(name, value = nil, options = {})
  text_field_tag(name, value, options.stringify_keys.update("type" => "email"))
end

#field_set_tag(legend = nil, options = nil, &block) ⇒ Object

Creates a field set for grouping HTML form elements.

legend will become the fieldset’s title (optional as per W3C). options accept the same values as tag.

Examples

<%= field_set_tag do %>
  <p><%= text_field_tag 'name' %></p>
<% end %>
# => <fieldset><p><input id="name" name="name" type="text" /></p></fieldset>

<%= field_set_tag 'Your details' do %>
  <p><%= text_field_tag 'name' %></p>
<% end %>
# => <fieldset><legend>Your details</legend><p><input id="name" name="name" type="text" /></p></fieldset>

<%= field_set_tag nil, :class => 'format' do %>
  <p><%= text_field_tag 'name' %></p>
<% end %>
# => <fieldset class="format"><p><input id="name" name="name" type="text" /></p></fieldset>



460
461
462
463
464
465
466
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 460

def field_set_tag(legend = nil, options = nil, &block)
  content = capture(&block)
  output = tag(:fieldset, options, true)
  output.safe_concat(content_tag(:legend, legend)) unless legend.blank?
  output.concat(content)
  output.safe_concat("</fieldset>")
end

#file_field_tag(name, options = {}) ⇒ Object

Creates a file upload field. If you are using file uploads then you will also need to set the multipart option for the form tag:

<%= form_tag '/upload', :multipart => true do %>
  <label for="file">File to Upload</label> <%= file_field_tag "file" %>
  <%= submit_tag %>
<% end %>

The specified URL will then be passed a File object containing the selected file, or if the field was left blank, a StringIO object.

Options

  • Creates standard HTML attributes for the tag.

  • :disabled - If set to true, the user will not be able to use this input.

Examples

file_field_tag 'attachment'
# => <input id="attachment" name="attachment" type="file" />

file_field_tag 'avatar', :class => 'profile_input'
# => <input class="profile_input" id="avatar" name="avatar" type="file" />

file_field_tag 'picture', :disabled => true
# => <input disabled="disabled" id="picture" name="picture" type="file" />

file_field_tag 'resume', :value => '~/resume.doc'
# => <input id="resume" name="resume" type="file" value="~/resume.doc" />

file_field_tag 'user_pic', :accept => 'image/png,image/gif,image/jpeg'
# => <input accept="image/png,image/gif,image/jpeg" id="user_pic" name="user_pic" type="file" />

file_field_tag 'file', :accept => 'text/html', :class => 'upload', :value => 'index.html'
# => <input accept="text/html" class="upload" id="file" name="file" type="file" value="index.html" />



224
225
226
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 224

def file_field_tag(name, options = {})
  text_field_tag(name, nil, options.update("type" => "file"))
end

#form_tag(url_for_options = {}, options = {}, *parameters_for_url, &block) ⇒ Object

Starts a form tag that points the action to an url configured with url_for_options just like ActionController::Base#url_for. The method for the form defaults to POST.

Options

  • :multipart - If set to true, the enctype is set to “multipart/form-data”.

  • :method - The method to use when submitting the form, usually either “get” or “post”. If “put”, “delete”, or another verb is used, a hidden input with name _method is added to simulate the verb over post.

  • A list of parameters to feed to the URL the form will be posted to.

  • :remote - If set to true, will allow the Unobtrusive JavaScript drivers to control the submit behaviour. By default this behaviour is an ajax submit.

Examples

 form_tag('/posts')
 # => <form action="/posts" method="post">

 form_tag('/posts/1', :method => :put)
 # => <form action="/posts/1" method="put">

 form_tag('/upload', :multipart => true)
 # => <form action="/upload" method="post" enctype="multipart/form-data">

 <%= form_tag('/posts') do -%>
   <div><%= submit_tag 'Save' %></div>
 <% end -%>
 # => <form action="/posts" method="post"><div><input type="submit" name="submit" value="Save" /></div></form>

<%= form_tag('/posts', :remote => true) %>
 # => <form action="/posts" method="post" data-remote="true">



49
50
51
52
53
54
55
56
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 49

def form_tag(url_for_options = {}, options = {}, *parameters_for_url, &block)
  html_options = html_options_for_form(url_for_options, options, *parameters_for_url)
  if block_given?
    form_tag_in_block(html_options, &block)
  else
    form_tag_html(html_options)
  end
end

#hidden_field_tag(name, value = nil, options = {}) ⇒ Object

Creates a hidden form input field used to transmit data that would be lost due to HTTP’s statelessness or data that should be hidden from the user.

Options

  • Creates standard HTML attributes for the tag.

Examples

hidden_field_tag 'tags_list'
# => <input id="tags_list" name="tags_list" type="hidden" />

hidden_field_tag 'token', 'VUBJKB23UIVI1UU1VOBVI@'
# => <input id="token" name="token" type="hidden" value="VUBJKB23UIVI1UU1VOBVI@" />

hidden_field_tag 'collected_input', '', :onchange => "alert('Input collected!')"
# => <input id="collected_input" name="collected_input" onchange="alert('Input collected!')"
#    type="hidden" value="" />



187
188
189
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 187

def hidden_field_tag(name, value = nil, options = {})
  text_field_tag(name, value, options.stringify_keys.update("type" => "hidden"))
end

#image_submit_tag(source, options = {}) ⇒ Object

Displays an image which when clicked will submit the form.

source is passed to AssetTagHelper#path_to_image

Options

  • :confirm => 'question?' - This will add a JavaScript confirm prompt with the question specified. If the user accepts, the form is processed normally, otherwise no action is taken.

  • :disabled - If set to true, the user will not be able to use this input.

  • Any other key creates standard HTML options for the tag.

Examples

image_submit_tag("login.png")
# => <input src="/images/login.png" type="image" />

image_submit_tag("purchase.png", :disabled => true)
# => <input disabled="disabled" src="/images/purchase.png" type="image" />

image_submit_tag("search.png", :class => 'search_button')
# => <input class="search_button" src="/images/search.png" type="image" />

image_submit_tag("agree.png", :disabled => true, :class => "agree_disagree_button")
# => <input class="agree_disagree_button" disabled="disabled" src="/images/agree.png" type="image" />



430
431
432
433
434
435
436
437
438
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 430

def image_submit_tag(source, options = {})
  options.stringify_keys!

  if confirm = options.delete("confirm")
    add_confirm_to_attributes!(options, confirm)
  end

  tag :input, { "type" => "image", "src" => path_to_image(source) }.update(options.stringify_keys)
end

#label_tag(name = nil, content_or_options = nil, options = nil, &block) ⇒ Object

Creates a label element. Accepts a block.

Options

  • Creates standard HTML attributes for the tag.

Examples

label_tag 'name'
# => <label for="name">Name</label>

label_tag 'name', 'Your name'
# => <label for="name">Your Name</label>

label_tag 'name', nil, :class => 'small_label'
# => <label for="name" class="small_label">Name</label>



163
164
165
166
167
168
169
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 163

def label_tag(name = nil, content_or_options = nil, options = nil, &block)
  options = content_or_options if block_given? && content_or_options.is_a?(Hash)
  options ||= {}
  options.stringify_keys!
  options["for"] = sanitize_to_id(name) unless name.blank? || options.has_key?("for")
  content_tag :label, content_or_options || name.to_s.humanize, options, &block
end

#number_field_tag(name, value = nil, options = {}) ⇒ Object

Creates a number field.

Options

  • :min - The minimum acceptable value.

  • :max - The maximum acceptable value.

  • :in - A range specifying the :min and :max values.

  • :step - The acceptable value granularity.

  • Otherwise accepts the same options as text_field_tag.

Examples

number_field_tag 'quantity', nil, :in => 1...10
=> <input id="quantity" name="quantity" min="1" max="9" />



514
515
516
517
518
519
520
521
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 514

def number_field_tag(name, value = nil, options = {})
  options = options.stringify_keys
  options["type"] ||= "number"
  if range = options.delete("in") || options.delete("within")
    options.update("min" => range.min, "max" => range.max)
  end
  text_field_tag(name, value, options)
end

#password_field_tag(name = "password", value = nil, options = {}) ⇒ Object

Creates a password field, a masked text field that will hide the users input behind a mask character.

Options

  • :disabled - If set to true, the user will not be able to use this input.

  • :size - The number of visible characters that will fit in the input.

  • :maxlength - The maximum number of characters that the browser will allow the user to enter.

  • Any other key creates standard HTML attributes for the tag.

Examples

password_field_tag 'pass'
# => <input id="pass" name="pass" type="password" />

password_field_tag 'secret', 'Your secret here'
# => <input id="secret" name="secret" type="password" value="Your secret here" />

password_field_tag 'masked', nil, :class => 'masked_input_field'
# => <input class="masked_input_field" id="masked" name="masked" type="password" />

password_field_tag 'token', '', :size => 15
# => <input id="token" name="token" size="15" type="password" value="" />

password_field_tag 'key', nil, :maxlength => 16
# => <input id="key" maxlength="16" name="key" type="password" />

password_field_tag 'confirm_pass', nil, :disabled => true
# => <input disabled="disabled" id="confirm_pass" name="confirm_pass" type="password" />

password_field_tag 'pin', '1234', :maxlength => 4, :size => 6, :class => "pin_input"
# => <input class="pin_input" id="pin" maxlength="4" name="pin" size="6" type="password" value="1234" />



257
258
259
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 257

def password_field_tag(name = "password", value = nil, options = {})
  text_field_tag(name, value, options.update("type" => "password"))
end

#radio_button_tag(name, value, checked = false, options = {}) ⇒ Object

Creates a radio button; use groups of radio buttons named the same to allow users to select from a group of options.

Options

  • :disabled - If set to true, the user will not be able to use this input.

  • Any other key creates standard HTML options for the tag.

Examples

radio_button_tag 'gender', 'male'
# => <input id="gender_male" name="gender" type="radio" value="male" />

radio_button_tag 'receive_updates', 'no', true
# => <input checked="checked" id="receive_updates_no" name="receive_updates" type="radio" value="no" />

radio_button_tag 'time_slot', "3:00 p.m.", false, :disabled => true
# => <input disabled="disabled" id="time_slot_300_pm" name="time_slot" type="radio" value="3:00 p.m." />

radio_button_tag 'color', "green", true, :class => "color_input"
# => <input checked="checked" class="color_input" id="color_green" name="color" type="radio" value="green" />



349
350
351
352
353
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 349

def radio_button_tag(name, value, checked = false, options = {})
  html_options = { "type" => "radio", "name" => name, "id" => "#{sanitize_to_id(name)}_#{sanitize_to_id(value)}", "value" => value }.update(options.stringify_keys)
  html_options["checked"] = "checked" if checked
  tag :input, html_options
end

#range_field_tag(name, value = nil, options = {}) ⇒ Object

Creates a range form element.

Options

  • Accepts the same options as number_field_tag.



527
528
529
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 527

def range_field_tag(name, value = nil, options = {})
  number_field_tag(name, value, options.stringify_keys.update("type" => "range"))
end

#search_field_tag(name, value = nil, options = {}) ⇒ Object

Creates a text field of type “search”.

Options

  • Accepts the same options as text_field_tag.



472
473
474
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 472

def search_field_tag(name, value = nil, options = {})
  text_field_tag(name, value, options.stringify_keys.update("type" => "search"))
end

#select_tag(name, option_tags = nil, options = {}) ⇒ Object

Creates a dropdown selection box, or if the :multiple option is set to true, a multiple choice selection box.

Helpers::FormOptions can be used to create common select boxes such as countries, time zones, or associated records. option_tags is a string containing the option tags for the select box.

Options

  • :multiple - If set to true the selection will allow multiple choices.

  • :disabled - If set to true, the user will not be able to use this input.

  • Any other key creates standard HTML attributes for the tag.

Examples

select_tag "people", options_from_collection_for_select(@people, "id", "name")
# <select id="people" name="people"><option value="1">David</option></select>

select_tag "people", "<option>David</option>"
# => <select id="people" name="people"><option>David</option></select>

select_tag "count", "<option>1</option><option>2</option><option>3</option><option>4</option>"
# => <select id="count" name="count"><option>1</option><option>2</option>
#    <option>3</option><option>4</option></select>

select_tag "colors", "<option>Red</option><option>Green</option><option>Blue</option>", :multiple => true
# => <select id="colors" multiple="multiple" name="colors[]"><option>Red</option>
#    <option>Green</option><option>Blue</option></select>

select_tag "locations", "<option>Home</option><option selected="selected">Work</option><option>Out</option>"
# => <select id="locations" name="locations"><option>Home</option><option selected='selected'>Work</option>
#    <option>Out</option></select>

select_tag "access", "<option>Read</option><option>Write</option>", :multiple => true, :class => 'form_input'
# => <select class="form_input" id="access" multiple="multiple" name="access[]"><option>Read</option>
#    <option>Write</option></select>

select_tag "destination", "<option>NYC</option><option>Paris</option><option>Rome</option>", :disabled => true
# => <select disabled="disabled" id="destination" name="destination"><option>NYC</option>
#    <option>Paris</option><option>Rome</option></select>



95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 95

def select_tag(name, option_tags = nil, options = {})
  if Array === option_tags
    ActiveSupport::Deprecation.warn 'Passing an array of option_tags to select_tag implicitly joins them without marking them as HTML-safe. Pass option_tags.join.html_safe instead.', caller
  end

  html_name = (options[:multiple] == true && !name.to_s.ends_with?("[]")) ? "#{name}[]" : name
  if blank = options.delete(:include_blank)
    if blank.kind_of?(String)
      option_tags = "<option value=\"\">#{blank}</option>".html_safe + option_tags
    else
      option_tags = "<option value=\"\"></option>".html_safe + option_tags
    end
  end
  content_tag :select, option_tags, { "name" => html_name, "id" => sanitize_to_id(name) }.update(options.stringify_keys)
end

#submit_tag(value = "Save changes", options = {}) ⇒ Object

Creates a submit button with the text value as the caption.

Options

  • :confirm => 'question?' - If present the unobtrusive JavaScript drivers will provide a prompt with the question specified. If the user accepts, the form is processed normally, otherwise no action is taken.

  • :disabled - If true, the user will not be able to use this input.

  • :disable_with - Value of this parameter will be used as the value for a disabled version of the submit button when the form is submitted. This feature is provided by the unobtrusive JavaScript driver.

  • Any other key creates standard HTML options for the tag.

Examples

submit_tag
# => <input name="commit" type="submit" value="Save changes" />

submit_tag "Edit this article"
# => <input name="commit" type="submit" value="Edit this article" />

submit_tag "Save edits", :disabled => true
# => <input disabled="disabled" name="commit" type="submit" value="Save edits" />

submit_tag "Complete sale", :disable_with => "Please wait..."
# => <input name="commit" data-disable-with="Please wait..."
#    type="submit" value="Complete sale" />

submit_tag nil, :class => "form_submit"
# => <input class="form_submit" name="commit" type="submit" />

submit_tag "Edit", :disable_with => "Editing...", :class => "edit_button"
# => <input class="edit_button" data-disable_with="Editing..."
#    name="commit" type="submit" value="Edit" />

submit_tag "Save", :confirm => "Are you sure?"
# => <input name='commit' type='submit' value='Save'
      data-confirm="Are you sure?" />



393
394
395
396
397
398
399
400
401
402
403
404
405
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 393

def submit_tag(value = "Save changes", options = {})
  options.stringify_keys!

  if disable_with = options.delete("disable_with")
    options["data-disable-with"] = disable_with
  end

  if confirm = options.delete("confirm")
    add_confirm_to_attributes!(options, confirm)
  end

  tag :input, { "type" => "submit", "name" => "commit", "value" => value }.update(options.stringify_keys)
end

#telephone_field_tag(name, value = nil, options = {}) ⇒ Object Also known as: phone_field_tag

Creates a text field of type “tel”.

Options

  • Accepts the same options as text_field_tag.



480
481
482
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 480

def telephone_field_tag(name, value = nil, options = {})
  text_field_tag(name, value, options.stringify_keys.update("type" => "tel"))
end

#text_area_tag(name, content = nil, options = {}) ⇒ Object

Creates a text input area; use a textarea for longer text inputs such as blog posts or descriptions.

Options

  • :size - A string specifying the dimensions (columns by rows) of the textarea (e.g., “25x10”).

  • :rows - Specify the number of rows in the textarea

  • :cols - Specify the number of columns in the textarea

  • :disabled - If set to true, the user will not be able to use this input.

  • :escape - By default, the contents of the text input are HTML escaped. If you need unescaped contents, set this to false.

  • Any other key creates standard HTML attributes for the tag.

Examples

text_area_tag 'post'
# => <textarea id="post" name="post"></textarea>

text_area_tag 'bio', @user.bio
# => <textarea id="bio" name="bio">This is my biography.</textarea>

text_area_tag 'body', nil, :rows => 10, :cols => 25
# => <textarea cols="25" id="body" name="body" rows="10"></textarea>

text_area_tag 'body', nil, :size => "25x10"
# => <textarea name="body" id="body" cols="25" rows="10"></textarea>

text_area_tag 'description', "Description goes here.", :disabled => true
# => <textarea disabled="disabled" id="description" name="description">Description goes here.</textarea>

text_area_tag 'comment', nil, :class => 'comment_input'
# => <textarea class="comment_input" id="comment" name="comment"></textarea>



290
291
292
293
294
295
296
297
298
299
300
301
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 290

def text_area_tag(name, content = nil, options = {})
  options.stringify_keys!

  if size = options.delete("size")
    options["cols"], options["rows"] = size.split("x") if size.respond_to?(:split)
  end

  escape = options.key?("escape") ? options.delete("escape") : true
  content = html_escape(content) if escape

  content_tag :textarea, content.to_s.html_safe, { "name" => name, "id" => sanitize_to_id(name) }.update(options)
end

#text_field_tag(name, value = nil, options = {}) ⇒ Object

Creates a standard text field; use these text fields to input smaller chunks of text like a username or a search query.

Options

  • :disabled - If set to true, the user will not be able to use this input.

  • :size - The number of visible characters that will fit in the input.

  • :maxlength - The maximum number of characters that the browser will allow the user to enter.

  • :placeholder - The text contained in the field by default which is removed when the field receives focus.

  • Any other key creates standard HTML attributes for the tag.

Examples

text_field_tag 'name'
# => <input id="name" name="name" type="text" />

text_field_tag 'query', 'Enter your search query here'
# => <input id="query" name="query" type="text" value="Enter your search query here" />

text_field_tag 'search', nil, :placeholder => 'Enter search term...'
# => <input id="search" name="search" placeholder="Enter search term..." type="text" />

text_field_tag 'request', nil, :class => 'special_input'
# => <input class="special_input" id="request" name="request" type="text" />

text_field_tag 'address', '', :size => 75
# => <input id="address" name="address" size="75" type="text" value="" />

text_field_tag 'zip', nil, :maxlength => 5
# => <input id="zip" maxlength="5" name="zip" type="text" />

text_field_tag 'payment_amount', '$0.00', :disabled => true
# => <input disabled="disabled" id="payment_amount" name="payment_amount" type="text" value="$0.00" />

text_field_tag 'ip', '0.0.0.0', :maxlength => 15, :size => 20, :class => "ip-input"
# => <input class="ip-input" id="ip" maxlength="15" name="ip" size="20" type="text" value="0.0.0.0" />



145
146
147
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 145

def text_field_tag(name, value = nil, options = {})
  tag :input, { "type" => "text", "name" => name, "id" => sanitize_to_id(name), "value" => value }.update(options.stringify_keys)
end

#url_field_tag(name, value = nil, options = {}) ⇒ Object

Creates a text field of type “url”.

Options

  • Accepts the same options as text_field_tag.



489
490
491
 
# File 'lib/action_view/helpers/form_tag_helper.rb', line 489

def url_field_tag(name, value = nil, options = {})
  text_field_tag(name, value, options.stringify_keys.update("type" => "url"))
end