Module: ActionView::Helpers

Define class methods from given block.

Evaluate given block in context of base class, so that you can write class macros here.

Evaluate given block in context of base class, so that you can write class macros here.

Specify whether an error should be raised for missing translations.

Returns whether the current view fragment is within a cache block.

Alias for TranslationHelper#localize.

Delegates to I18n.localize with no additional functionality.

Alias for TranslationHelper#translate.

Delegates to I18n#translate but also performs three additional functions.

Overrides _layout_for in the context object so it supports the case a block is passed to a partial.

Returns the result of a render that’s dictated by the options hash.

Delegates to ActiveSupport::NumberHelper#number_to_currency.

Delegates to ActiveSupport::NumberHelper#number_to_human.

Delegates to ActiveSupport::NumberHelper#number_to_human_size.

Delegates to ActiveSupport::NumberHelper#number_to_percentage.

Delegates to ActiveSupport::NumberHelper#number_to_phone.

Delegates to ActiveSupport::NumberHelper#number_to_delimited.

Delegates to ActiveSupport::NumberHelper#number_to_rounded.

Escapes carriage returns and single and double quotes for JavaScript segments.

Alias for JavaScriptHelper#escape_javascript.

Returns a JavaScript tag with the content inside.

Returns check box tags for the collection of existing return values of method for object‘s class.

Returns radio button tags for the collection of existing return values of method for object‘s class.

Returns <select> and <option> tags for the collection of existing return values of method for object‘s class.

Returns <select>, <optgroup> and <option> tags for the collection of existing return values of method for object‘s class.

Returns a string of <option> tags, like options_for_select, but wraps them with <optgroup> tags:

Returns a string of <option> tags, like options_from_collection_for_select, but groups them by <optgroup> tags based on the object relationships of the arguments.

Accepts a container (hash, array, enumerable, your type) and returns a string of option tags.

Returns a string of option tags that have been compiled by iterating over the collection and assigning the result of a call to the value_method as the option value and the text_method as the option text.

Create a select tag and a series of contained option tags for the provided object and method.

Returns a string of option tags for pretty much any time zone in the world.

Returns select and option tags for the given object and method, using #time_zone_options_for_select to generate the list of option tags.

Returns a string of option tags for the days of the week.

Returns select and option tags for the given object and method, using weekday_options_for_select to generate the list of option tags.

Returns a checkbox tag tailored for accessing a specified attribute (identified by method) on an object assigned to the template (identified by object).

Returns a text_field of type “color”.

Returns a text_field of type “date”.

Returns a text_field of type “datetime-local”.

Alias for FormHelper#datetime_field.

Returns a text_field of type “email”.

Scopes input fields with either an explicit scope or model.

Creates a scope around a specific model object like form_for, but doesn’t create the form tags themselves.

Returns a file upload input tag tailored for accessing a specified attribute (identified by method) on an object assigned to the template (identified by object).

Creates a form that allows the user to create or update the attributes of a specific model object.

Creates a form tag based on mixing URLs, scopes, or models.

Returns a hidden input tag tailored for accessing a specified attribute (identified by method) on an object assigned to the template (identified by object).

Returns a label tag tailored for labelling an input field for a specified attribute (identified by method) on an object assigned to the template (identified by object).

Returns a text_field of type “month”.

Returns an input tag of type “number”.

Returns an input tag of the “password” type tailored for accessing a specified attribute (identified by method) on an object assigned to the template (identified by object).

Alias for FormHelper#telephone_field.

Returns a radio button tag for accessing a specified attribute (identified by method) on an object assigned to the template (identified by object).

Returns an input tag of type “range”.

Returns an input of type “search” for accessing a specified attribute (identified by method) on an object assigned to the template (identified by object_name).

Returns a text_field of type “tel”.

Returns a textarea opening and closing tag set tailored for accessing a specified attribute (identified by method) on an object assigned to the template (identified by object).

Returns an input tag of the “text” type tailored for accessing a specified attribute (identified by method) on an object assigned to the template (identified by object).

Returns a text_field of type “time”.

Returns a text_field of type “url”.

Returns a text_field of type “week”.

The DOM class convention is to use the singular form of an object or class.

The DOM id convention is to use the singular form of an object or class with the id following an underscore.

Returns a string representation of the key attribute(s) that is suitable for use in an HTML DOM id.

Converts the given object to an Active Model compliant one.

Creates a button element that defines a submit button, reset button or a generic button which can be used in JavaScript, for example.

Creates a check box form input tag.

Creates a text field of type “color”.

Creates a text field of type “date”.

Creates a text field of type “datetime-local”.

Alias for FormTagHelper#datetime_field_tag.

Creates a text field of type “email”.

Generate an HTML id attribute value for the given name and field combination.

Generate an HTML name attribute value for the given name and field combination.

Creates a field set for grouping HTML form elements.

Alias for FormTagHelper#field_set_tag.

Creates a file upload field.

Starts a form tag that points the action to a URL configured with url_for_options just like ActionController::Base#url_for.

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.

Displays an image which when clicked will submit the form.

Creates a label element.

Creates a text field of type “month”.

Creates a number field.

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

Alias for FormTagHelper#telephone_field_tag.

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

Creates a range form element.

Creates a text field of type “search”.

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

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

Creates a text field of type “tel”.

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

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

Creates a text field of type “time”.

Creates a text field of type “url”.

Creates the hidden UTF-8 enforcer tag.

Creates a text field of type “week”.

see www.w3.org/TR/html4/types.html#type-name.

The preferred method of outputting text in your views is to use the <%= "text" %> eRuby syntax.

Returns the current cycle string after a cycle has been started.

Creates a Cycle object whose to_s method cycles through elements of an array every time it is called.

Extracts the first occurrence of phrase plus surrounding text from text.

Highlights occurrences of phrases in text by formatting them with a highlighter string.

Attempts to pluralize the singular word unless count is 1.

Resets a cycle so that it starts from the first element the next time it is called.

Returns text transformed into HTML using simple formatting rules.

Truncates text if it is longer than a specified :length.

Wraps the text into lines no longer than line_width width.

The cycle helpers need to store the cycles in a place that is guaranteed to be reset every time a page is rendered, so it uses an instance variable of Base.

Sanitizes HTML input, stripping all but known-safe tags and attributes.

Sanitizes a block of CSS code.

Strips all link tags from html leaving just the link text.

Strips all HTML tags from html, including comments and special characters.

Generates a form containing a single button that submits to the URL created by the set of options.

True if the current request URI was generated by the given options.

Creates an anchor element of the given name using a URL created by the set of options.

Creates a link tag of the given name using a URL created by the set of options if condition is true, otherwise only the name is returned.

Creates a link tag of the given name using a URL created by the set of options unless condition is true, in which case only the name is returned.

Creates a link tag of the given name using a URL created by the set of options unless the current request URI is the same as the links, in which case only the name is returned (or the given block is yielded, if one exists).

Creates a mailto link tag to the specified email_address, which is also used as the name of the link unless name is specified.

Creates a TEL anchor link tag to the specified phone_number.

Creates an SMS anchor link tag to the specified phone_number.

Returns an array of hashes each containing :name and :value keys suitable for use as the names and values of form input fields:

Basic implementation of url_for to allow use helpers without routes existence.

Returns a YAML representation of object wrapped with <pre> and </pre>.

Returns a set of select tags (one for year, month, and day) pre-selected for accessing a specified date-based attribute (identified by method) on an object assigned to the template (identified by object).

Returns a set of select tags (one for year, month, day, hour, and minute) pre-selected for accessing a specified datetime-based attribute (identified by method) on an object assigned to the template (identified by object).

Reports the approximate distance in time between two ::Time, ::Date, or ::DateTime objects or integers as seconds.

Alias for DateHelper#time_ago_in_words.

Returns a set of HTML select-tags (one for year, month, and day) pre-selected with the date.

Returns a set of HTML select-tags (one for year, month, day, hour, minute, and second) pre-selected with the datetime.

Returns a select tag with options for each of the days 1 through 31 with the current day selected.

Returns a select tag with options for each of the hours 0 through 23 with the current hour selected.

Returns a select tag with options for each of the minutes 0 through 59 with the current minute selected.

Returns a select tag with options for each of the months January through December with the current month selected.

Returns a select tag with options for each of the seconds 0 through 59 with the current second selected.

Returns a set of HTML select-tags (one for hour and minute).

Returns a select tag with options for each of the five years on each side of the current, which is selected.

Like distance_of_time_in_words, but where to_time is fixed to Time.now.

Returns a set of select tags (one for hour, minute, and optionally second) pre-selected for accessing a specified time-based attribute (identified by method) on an object assigned to the template (identified by object).

Returns an HTML time tag for the given date or time.

Alias for CsrfHelper#csrf_meta_tags.

Returns meta tags “csrf-param” and “csrf-token” with the name of the cross-site request forgery protection parameter and token, respectively.

Returns a meta tag “csp-nonce” with the per-session nonce value for allowing inline <script> tags.

This helper exposes a method for caching fragments of a view rather than an entire action or page.

This helper returns the name of a cache key for a given fragment cache call.

Cache fragments of a view if condition is true.

Cache fragments of a view unless condition is true.

Raises UncacheableFragmentError when called from within a cache block.

Adds easy defaults to writing Atom feeds with the Builder template engine (this does not work on ::ERB or any other template languages).

Returns an HTML audio tag for the sources.

Returns a link tag that browsers and feed readers can use to auto-detect an RSS, Atom, or JSON feed.

Returns a link tag for a favicon managed by the asset pipeline.

Returns an HTML image tag for the source.

Returns an HTML script tag for each of the sources provided.

Returns an HTML picture tag for the sources.

Returns a link tag that browsers can use to preload the source.

Returns a stylesheet link tag for the sources specified as arguments.

Returns an HTML video tag for the sources.

Returns a CDATA section with the given content.

Alias for TagHelper#token_list.

Returns an HTML block tag of type name surrounding the content.

Returns an escaped version of html without affecting existing escaped entities.

Returns an HTML tag.

Returns a string of tokens built from args.

This method outputs without escaping a string.

This method returns an HTML safe string similar to what Array#join would return.

Converts the array to a comma-separated sentence where the last element is joined by the connector word.

The capture method extracts part of a template as a string object.

Calling content_for stores a block of markup in an identifier for later use.

content_for? checks whether any content has been captured yet using content_for.

The same as content_for but when used with streaming flushes straight back to the layout.

Use an alternate output buffer for the duration of the block.

This is the entry point for all assets.

Computes the full URL to an asset in the public directory.

Computes the path to an audio asset in the public audios directory.

Computes the full URL to an audio asset in the public audios directory.

Compute extname to append to asset path.

Pick an asset host for this source.

Computes asset path to public directory.

Computes the path to a font asset.

Computes the full URL to a font asset.

Computes the path to an image asset.

Computes the full URL to an image asset.

Computes the path to a JavaScript asset in the public javascripts directory.

Computes the full URL to a JavaScript asset in the public javascripts directory.

Alias for AssetUrlHelper#asset_path.

Alias for AssetUrlHelper#audio_path.

Alias for AssetUrlHelper#font_path.

Alias for AssetUrlHelper#image_path.

Alias for AssetUrlHelper#javascript_path.

Alias for AssetUrlHelper#stylesheet_path.

Alias for AssetUrlHelper#video_path.

Alias for AssetUrlHelper#compute_asset_path.

Computes the path to a stylesheet asset in the public stylesheets directory.

Computes the full URL to a stylesheet asset in the public stylesheets directory.

Alias for AssetUrlHelper#asset_url.

Alias for AssetUrlHelper#audio_url.

Alias for AssetUrlHelper#font_url.

Alias for AssetUrlHelper#image_url.

Alias for AssetUrlHelper#javascript_url.

Alias for AssetUrlHelper#stylesheet_url.

Alias for AssetUrlHelper#video_url.

Computes the path to a video asset in the public videos directory.

Computes the full URL to a video asset in the public videos directory.

Allows you to measure the execution time of a block in a template and records the result to the log.