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a few details here and there in url_helper.rb docs

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Xavier Noria 2009-05-24 23:17:47 +02:00
parent bd918ce75f
commit 91e32af772
1 changed files with 46 additions and 47 deletions
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79
actionpack/lib/action_view/helpers/url_helper.rb
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@ -11,11 +11,11 @@ module ActionView
# Returns the URL for the set of +options+ provided. This takes the # Returns the URL for the set of +options+ provided. This takes the
# same options as +url_for+ in Action Controller (see the # same options as +url_for+ in Action Controller (see the
# documentation for ActionController::Base#url_for). Note that by default # documentation for <tt>ActionController::Base#url_for</tt>). Note that by default
# <tt>:only_path</tt> is <tt>true</tt> so you'll get the relative /controller/action # <tt>:only_path</tt> is <tt>true</tt> so you'll get the relative "/controller/action"
# instead of the fully qualified URL like http://example.com/controller/action. # instead of the fully qualified URL like "http://example.com/controller/action".
# #
# When called from a view, url_for returns an HTML escaped url. If you # When called from a view, +url_for+ returns an HTML escaped url. If you
# need an unescaped url, pass <tt>:escape => false</tt> in the +options+. # need an unescaped url, pass <tt>:escape => false</tt> in the +options+.
# #
# ==== Options # ==== Options
@ -33,8 +33,8 @@ module ActionView
# #
# If you instead of a hash pass a record (like an Active Record or Active Resource) as the options parameter, # If you instead of a hash pass a record (like an Active Record or Active Resource) as the options parameter,
# you'll trigger the named route for that record. The lookup will happen on the name of the class. So passing # you'll trigger the named route for that record. The lookup will happen on the name of the class. So passing
# a Workshop object will attempt to use the workshop_path route. If you have a nested route, such as # a Workshop object will attempt to use the +workshop_path+ route. If you have a nested route, such as
# admin_workshop_path you'll have to call that explicitly (it's impossible for url_for to guess that route). # +admin_workshop_path+ you'll have to call that explicitly (it's impossible for +url_for+ to guess that route).
# #
# ==== Examples # ==== Examples
# <%= url_for(:action => 'index') %> # <%= url_for(:action => 'index') %>
@ -96,10 +96,10 @@ module ActionView
# Creates a link tag of the given +name+ using a URL created by the set # Creates a link tag of the given +name+ using a URL created by the set
# of +options+. See the valid options in the documentation for # of +options+. See the valid options in the documentation for
# url_for. It's also possible to pass a string instead # +url_for+. It's also possible to pass a string instead
# of an options hash to get a link tag that uses the value of the string as the # of an options hash to get a link tag that uses the value of the string as the
# href for the link, or use <tt>:back</tt> to link to the referrer - a JavaScript back # href for the link, or use <tt>:back</tt> to link to the referrer - a JavaScript back
# link will be used in place of a referrer if none exists. If nil is passed as # link will be used in place of a referrer if none exists. If +nil+ is passed as
# a name, the link itself will become the name. # a name, the link itself will become the name.
# #
# ==== Signatures # ==== Signatures
@ -116,27 +116,22 @@ module ActionView
# * <tt>:popup => true || array of window options</tt> - This will force the # * <tt>:popup => true || array of window options</tt> - This will force the
# link to open in a popup window. By passing true, a default browser window # link to open in a popup window. By passing true, a default browser window
# will be opened with the URL. You can also specify an array of options # will be opened with the URL. You can also specify an array of options
# that are passed through to JavaScripts window.open method. # that are passed to the <tt>window.open</tt> JavaScript call.
# * <tt>:method => symbol of HTTP verb</tt> - This modifier will dynamically # * <tt>:method => symbol of HTTP verb</tt> - This modifier will dynamically
# create an HTML form and immediately submit the form for processing using # create an HTML form and immediately submit the form for processing using
# the HTTP verb specified. Useful for having links perform a POST operation # the HTTP verb specified. Useful for having links perform a POST operation
# in dangerous actions like deleting a record (which search bots can follow # in dangerous actions like deleting a record (which search bots can follow
# while spidering your site). Supported verbs are <tt>:post</tt>, <tt>:delete</tt> and <tt>:put</tt>. # while spidering your site). Supported verbs are <tt>:post</tt>, <tt>:delete</tt> and <tt>:put</tt>.
# Note that if the user has JavaScript disabled, the request will fall back # Note that if the user has JavaScript disabled, the request will fall back
# to using GET. If you are relying on the POST behavior, you should check # to using GET. If <tt>:href => '#'</tt> is used and the user has JavaScript
# for it in your controller's action by using the request object's methods # disabled clicking the link will have no effect. If you are relying on the
# for <tt>post?</tt>, <tt>delete?</tt> or <tt>put?</tt>. # POST behavior, you should check for it in your controller's action by using
# the request object's methods for <tt>post?</tt>, <tt>delete?</tt> or <tt>put?</tt>.
# * The +html_options+ will accept a hash of html attributes for the link tag. # * The +html_options+ will accept a hash of html attributes for the link tag.
# #
# Note that if the user has JavaScript disabled, the request will fall back
# to using GET. If <tt>:href => '#'</tt> is used and the user has JavaScript disabled
# clicking the link will have no effect. If you are relying on the POST
# behavior, your should check for it in your controller's action by using the
# request object's methods for <tt>post?</tt>, <tt>delete?</tt> or <tt>put?</tt>.
#
# You can mix and match the +html_options+ with the exception of # You can mix and match the +html_options+ with the exception of
# <tt>:popup</tt> and <tt>:method</tt> which will raise an ActionView::ActionViewError # <tt>:popup</tt> and <tt>:method</tt> which will raise an
# exception. # <tt>ActionView::ActionViewError</tt> exception.
# #
# ==== Examples # ==== Examples
# Because it relies on +url_for+, +link_to+ supports both older-style controller/action/id arguments # Because it relies on +url_for+, +link_to+ supports both older-style controller/action/id arguments
@ -169,9 +164,11 @@ module ActionView
# You can use a block as well if your link target is hard to fit into the name parameter. ERb example: # You can use a block as well if your link target is hard to fit into the name parameter. ERb example:
# #
# <% link_to(@profile) do %> # <% link_to(@profile) do %>
# <strong><%= @profile.name %></strong> -- <span>Check it out!!</span> # <strong><%= @profile.name %></strong> -- <span>Check it out!</span>
# <% end %> # <% end %>
# # => <a href="/profiles/1"><strong>David</strong> -- <span>Check it out!!</span></a> # # => <a href="/profiles/1">
# <strong>David</strong> -- <span>Check it out!</span>
# </a>
# #
# Classes and ids for CSS are easy to produce: # Classes and ids for CSS are easy to produce:
# #
@ -214,7 +211,9 @@ module ActionView
# # => <a href="/images/9" onclick="if (confirm('Are you sure?')) { var f = document.createElement('form'); # # => <a href="/images/9" onclick="if (confirm('Are you sure?')) { var f = document.createElement('form');
# f.style.display = 'none'; this.parentNode.appendChild(f); f.method = 'POST'; f.action = this.href; # f.style.display = 'none'; this.parentNode.appendChild(f); f.method = 'POST'; f.action = this.href;
# var m = document.createElement('input'); m.setAttribute('type', 'hidden'); m.setAttribute('name', '_method'); # var m = document.createElement('input'); m.setAttribute('type', 'hidden'); m.setAttribute('name', '_method');
# m.setAttribute('value', 'delete'); f.appendChild(m);f.submit(); };return false;">Delete Image</a> # m.setAttribute('value', 'delete');var s = document.createElement('input'); s.setAttribute('type', 'hidden');
# s.setAttribute('name', 'authenticity_token'); s.setAttribute('value', 'Q/ttlxPYZ6R77B+vZ1sBkhj21G2isO9dpE6UtOHBApg=');
# f.appendChild(s)f.appendChild(m);f.submit(); };return false;">Delete Image</a>
def link_to(*args, &block) def link_to(*args, &block)
if block_given? if block_given?
options = args.first || {} options = args.first || {}
@ -245,14 +244,14 @@ module ActionView
# by the set of +options+. This is the safest method to ensure links that # by the set of +options+. This is the safest method to ensure links that
# cause changes to your data are not triggered by search bots or accelerators. # cause changes to your data are not triggered by search bots or accelerators.
# If the HTML button does not work with your layout, you can also consider # If the HTML button does not work with your layout, you can also consider
# using the link_to method with the <tt>:method</tt> modifier as described in # using the +link_to+ method with the <tt>:method</tt> modifier as described in
# the link_to documentation. # the +link_to+ documentation.
# #
# The generated form element has a class name of <tt>button-to</tt> # The generated form element has a class name of <tt>button-to</tt>
# to allow styling of the form itself and its children. You can control # to allow styling of the form itself and its children. You can control
# the form submission and input element behavior using +html_options+. # the form submission and input element behavior using +html_options+.
# This method accepts the <tt>:method</tt> and <tt>:confirm</tt> modifiers # This method accepts the <tt>:method</tt> and <tt>:confirm</tt> modifiers
# described in the link_to documentation. If no <tt>:method</tt> modifier # described in the +link_to+ documentation. If no <tt>:method</tt> modifier
# is given, it will default to performing a POST operation. You can also # is given, it will default to performing a POST operation. You can also
# disable the button by passing <tt>:disabled => true</tt> in +html_options+. # disable the button by passing <tt>:disabled => true</tt> in +html_options+.
# If you are using RESTful routes, you can pass the <tt>:method</tt> # If you are using RESTful routes, you can pass the <tt>:method</tt>
@ -316,7 +315,7 @@ module ActionView
# Creates a link tag of the given +name+ using a URL created by the set of # 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 # +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 # which case only the name is returned (or the given block is yielded, if
# one exists). You can give link_to_unless_current a block which will # one exists). You can give +link_to_unless_current+ a block which will
# specialize the default behavior (e.g., show a "Start Here" link rather # specialize the default behavior (e.g., show a "Start Here" link rather
# than the link's text). # than the link's text).
# #
@ -342,7 +341,7 @@ module ActionView
# <li><a href="/controller/about">About Us</a></li> # <li><a href="/controller/about">About Us</a></li>
# </ul> # </ul>
# #
# The implicit block given to link_to_unless_current is evaluated if the current # The implicit block given to +link_to_unless_current+ is evaluated if the current
# action is the action given. So, if we had a comments page and wanted to render a # action is the action given. So, if we had a comments page and wanted to render a
# "Go Back" link instead of a link to the comments page, we could do something like this... # "Go Back" link instead of a link to the comments page, we could do something like this...
# #
@ -359,7 +358,7 @@ module ActionView
# +options+ unless +condition+ is true, in which case only the name is # +options+ unless +condition+ is true, in which case only the name is
# returned. To specialize the default behavior (i.e., show a login link rather # returned. To specialize the default behavior (i.e., show a login link rather
# than just the plaintext link text), you can pass a block that # than just the plaintext link text), you can pass a block that
# accepts the name or the full argument list for link_to_unless. # accepts the name or the full argument list for +link_to_unless+.
# #
# ==== Examples # ==== Examples
# <%= link_to_unless(@current_user.nil?, "Reply", { :action => "reply" }) %> # <%= link_to_unless(@current_user.nil?, "Reply", { :action => "reply" }) %>
@ -390,8 +389,8 @@ module ActionView
# Creates a link tag of the given +name+ using a URL created by the set of # Creates a link tag of the given +name+ using a URL created by the set of
# +options+ if +condition+ is true, in which case only the name is # +options+ if +condition+ is true, in which case only the name is
# returned. To specialize the default behavior, you can pass a block that # returned. To specialize the default behavior, you can pass a block that
# accepts the name or the full argument list for link_to_unless (see the examples # accepts the name or the full argument list for +link_to_unless+ (see the examples
# in link_to_unless). # in +link_to_unless+).
# #
# ==== Examples # ==== Examples
# <%= link_to_if(@current_user.nil?, "Login", { :controller => "sessions", :action => "new" }) %> # <%= link_to_if(@current_user.nil?, "Login", { :controller => "sessions", :action => "new" }) %>
@ -415,15 +414,15 @@ module ActionView
# also used as the name of the link unless +name+ is specified. Additional # also used as the name of the link unless +name+ is specified. Additional
# HTML attributes for the link can be passed in +html_options+. # HTML attributes for the link can be passed in +html_options+.
# #
# mail_to has several methods for hindering email harvesters and customizing # +mail_to+ has several methods for hindering email harvesters and customizing
# the email itself by passing special keys to +html_options+. # the email itself by passing special keys to +html_options+.
# #
# ==== Options # ==== Options
# * <tt>:encode</tt> - This key will accept the strings "javascript" or "hex". # * <tt>:encode</tt> - This key will accept the strings "javascript" or "hex".
# Passing "javascript" will dynamically create and encode the mailto: link then # Passing "javascript" will dynamically create and encode the mailto link then
# eval it into the DOM of the page. This method will not show the link on # eval it into the DOM of the page. This method will not show the link on
# the page if the user has JavaScript disabled. Passing "hex" will hex # the page if the user has JavaScript disabled. Passing "hex" will hex
# encode the +email_address+ before outputting the mailto: link. # encode the +email_address+ before outputting the mailto link.
# * <tt>:replace_at</tt> - When the link +name+ isn't provided, the # * <tt>:replace_at</tt> - When the link +name+ isn't provided, the
# +email_address+ is used for the link label. You can use this option to # +email_address+ is used for the link label. You can use this option to
# obfuscate the +email_address+ by substituting the @ sign with the string # obfuscate the +email_address+ by substituting the @ sign with the string
@ -606,23 +605,23 @@ module ActionView
submit_function << "f.submit();" submit_function << "f.submit();"
end end
# Processes the _html_options_ hash, converting the boolean # Processes the +html_options+ hash, converting the boolean
# attributes from true/false form into the form required by # attributes from true/false form into the form required by
# HTML/XHTML. (An attribute is considered to be boolean if # HTML/XHTML. (An attribute is considered to be boolean if
# its name is listed in the given _bool_attrs_ array.) # its name is listed in the given +bool_attrs+ array.)
# #
# More specifically, for each boolean attribute in _html_options_ # More specifically, for each boolean attribute in +html_options+
# given as: # given as:
# #
# "attr" => bool_value # "attr" => bool_value
# #
# if the associated _bool_value_ evaluates to true, it is # if the associated +bool_value+ evaluates to true, it is
# replaced with the attribute's name; otherwise the attribute is # replaced with the attribute's name; otherwise the attribute is
# removed from the _html_options_ hash. (See the XHTML 1.0 spec, # removed from the +html_options+ hash. (See the XHTML 1.0 spec,
# section 4.5 "Attribute Minimization" for more: # section 4.5 "Attribute Minimization" for more:
# http://www.w3.org/TR/xhtml1/#h-4.5) # http://www.w3.org/TR/xhtml1/#h-4.5)
# #
# Returns the updated _html_options_ hash, which is also modified # Returns the updated +html_options+ hash, which is also modified
# in place. # in place.
# #
# Example: # Example: