Provides a number of methods for creating form tags that doesn’t rely on conventions with an object assigned to the template like FormHelper does. With the FormTagHelper, you provide the names and values yourself.
NOTE: The html options disabled, readonly, and multiple can all be treated as booleans. So specifying :disabled => true will give disabled="disabled".
- check_box_tag
- end_form_tag
- file_field_tag
- form_tag
- hidden_field_tag
- image_submit_tag
- password_field_tag
- radio_button_tag
- select_tag
- start_form_tag
- submit_tag
- text_area_tag
- text_field_tag
Creates a check box.
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 105 105: def check_box_tag(name, value = "1", checked = false, options = {}) 106: html_options = { "type" => "checkbox", "name" => name, "id" => name, "value" => value }.update(options.stringify_keys) 107: html_options["checked"] = "checked" if checked 108: tag :input, html_options 109: end
Outputs "</form>"
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 28 28: def end_form_tag 29: "</form>" 30: end
Creates a file upload field.
If you are using file uploads then you will also need to set the multipart option for the form:
<%= form_tag { :action => "post" }, { :multipart => true } %> <label for="file">File to Upload</label> <%= file_field_tag "file" %> <%= submit_tag %> <%= end_form_tag %>
The specified URL will then be passed a File object containing the selected file, or if the field was left blank, a StringIO object.
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 77 77: def file_field_tag(name, options = {}) 78: text_field_tag(name, nil, options.update("type" => "file")) 79: end
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".
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 18 18: def form_tag(url_for_options = {}, options = {}, *parameters_for_url, &proc) 19: html_options = { "method" => "post" }.merge(options.stringify_keys) 20: html_options["enctype"] = "multipart/form-data" if html_options.delete("multipart") 21: html_options["action"] = url_for(url_for_options, *parameters_for_url) 22: tag :form, html_options, true 23: end
Creates a hidden field.
Takes the same options as text_field_tag
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 63 63: def hidden_field_tag(name, value = nil, options = {}) 64: text_field_tag(name, value, options.stringify_keys.update("type" => "hidden")) 65: end
Displays an image which when clicked will submit the form.
source is passed to AssetTagHelper#image_path
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 133 133: def image_submit_tag(source, options = {}) 134: tag :input, { "type" => "image", "src" => image_path(source) }.update(options.stringify_keys) 135: end
Creates a password field.
Takes the same options as text_field_tag
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 84 84: def password_field_tag(name = "password", value = nil, options = {}) 85: text_field_tag(name, value, options.update("type" => "password")) 86: end
Creates a radio button.
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 112 112: def radio_button_tag(name, value, checked = false, options = {}) 113: html_options = { "type" => "radio", "name" => name, "id" => name, "value" => value }.update(options.stringify_keys) 114: html_options["checked"] = "checked" if checked 115: tag :input, html_options 116: end
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:
# Outputs <select id="people" name="people"><option>David</option></select> select_tag "people", "<option>David</option>"
Options:
- :multiple - If set to true the selection will allow multiple choices.
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 44 44: def select_tag(name, option_tags = nil, options = {}) 45: content_tag :select, option_tags, { "name" => name, "id" => name }.update(options.stringify_keys) 46: end
Alias for form_tag
Creates a submit button with the text value as the caption. If options contains a pair with the key of "disable_with", then the value will be used to rename a disabled version of the submit button.
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 120 120: def submit_tag(value = "Save changes", options = {}) 121: options.stringify_keys! 122: 123: if disable_with = options.delete("disable_with") 124: options["onclick"] = "this.disabled=true;this.value='#{disable_with}';this.form.submit();#{options["onclick"]}" 125: end 126: 127: tag :input, { "type" => "submit", "name" => "commit", "value" => value }.update(options.stringify_keys) 128: end
Creates a text input area.
Options:
- :size - A string specifying the dimensions of the textarea.
# Outputs <textarea name="body" id="body" cols="25" rows="10"></textarea> <%= text_area_tag "body", nil, :size => "25x10" %>
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 94 94: def text_area_tag(name, content = nil, options = {}) 95: options.stringify_keys! 96: 97: if size = options.delete("size") 98: options["cols"], options["rows"] = size.split("x") 99: end 100: 101: content_tag :textarea, content, { "name" => name, "id" => name }.update(options.stringify_keys) 102: end
Creates a standard text field.
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.
A hash of standard HTML options for the tag.
[ show source ]
# File vendor/rails/actionpack/lib/action_view/helpers/form_tag_helper.rb, line 56 56: def text_field_tag(name, value = nil, options = {}) 57: tag :input, { "type" => "text", "name" => name, "id" => name, "value" => value }.update(options.stringify_keys) 58: end