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124 | .\" ======================================================================== |
125 | .\" |
126 | .IX Title "Catalyst::TraitFor::Request::REST::ForBrowsers 3" |
127 | .TH Catalyst::TraitFor::Request::REST::ForBrowsers 3 "2010-05-13" "perl v5.8.8" "User Contributed Perl Documentation" |
128 | .\" For nroff, turn off justification. Always turn off hyphenation; it makes |
129 | .\" way too many mistakes in technical documents. |
130 | .if n .ad l |
131 | .nh |
132 | .SH "NAME" |
133 | Catalyst::TraitFor::Request::REST::ForBrowsers \- A request trait for REST and browsers |
134 | .SH "SYNOPSIS" |
135 | .IX Header "SYNOPSIS" |
136 | .Vb 3 |
137 | \& package MyApp; |
138 | \& use Moose; |
139 | \& use namespace::autoclean; |
140 | \& |
141 | \& use Catalyst; |
142 | \& use CatalystX::RoleApplicator; |
143 | \& |
144 | \& extends \*(AqCatalyst\*(Aq; |
145 | \& |
146 | \& _\|_PACKAGE_\|_\->apply_request_class_roles(qw[ |
147 | \& Catalyst::TraitFor::Request::REST::ForBrowsers |
148 | \& ]); |
149 | .Ve |
150 | .SH "DESCRIPTION" |
151 | .IX Header "DESCRIPTION" |
152 | Writing REST-y apps is a good thing, but if you're also trying to support web |
153 | browsers, you're probably going to need some hackish workarounds. This module |
154 | provides those workarounds for you. |
155 | .PP |
156 | Specifically, it lets you do two things. First, it lets you \*(L"tunnel\*(R" \s-1PUT\s0 and |
157 | \&\s-1DELETE\s0 requests across a \s-1POST\s0, since most browsers do not support \s-1PUT\s0 or |
158 | \&\s-1DELETE\s0 actions (as of early 2009, at least). |
159 | .PP |
160 | Second, it provides a heuristic to check if the client is a web browser, |
161 | regardless of what content types it claims to accept. The reason for this is |
162 | that while a browser might claim to accept the \*(L"application/xml\*(R" content type, |
163 | it's really not going to do anything useful with it, and you're best off |
164 | giving it \s-1HTML\s0. |
165 | .SH "METHODS" |
166 | .IX Header "METHODS" |
167 | This class provides the following methods: |
168 | .ie n .SS "$request\->method" |
169 | .el .SS "\f(CW$request\fP\->method" |
170 | .IX Subsection "$request->method" |
171 | This method works just like \f(CW\*(C`Catalyst::Request\->method()\*(C'\fR except it |
172 | allows for tunneling of \s-1PUT\s0 and \s-1DELETE\s0 requests via a \s-1POST\s0. |
173 | .PP |
174 | Specifically, you can provide a form element named \*(L"x\-tunneled-method\*(R" which |
175 | can override the request method for a \s-1POST\s0. This \fIonly\fR works for a \s-1POST\s0, not |
176 | a \s-1GET\s0. |
177 | .PP |
178 | You can also use a header named \*(L"x\-http-method-override\*(R" instead (Google uses |
179 | this header for its APIs). |
180 | .ie n .SS "$request\->looks_like_browser" |
181 | .el .SS "\f(CW$request\fP\->looks_like_browser" |
182 | .IX Subsection "$request->looks_like_browser" |
183 | This attribute provides a heuristic to determine whether or not the request |
184 | \&\fIappears\fR to come from a browser. You can use this however you want. I |
185 | usually use it to determine whether or not to give the client a full \s-1HTML\s0 page |
186 | or some sort of serialized data. |
187 | .PP |
188 | This is a heuristic, and like any heuristic, it is probably wrong |
189 | sometimes. Here is how it works: |
190 | .IP "\(bu" 4 |
191 | If the request includes a header \*(L"X\-Request-With\*(R" set to either \*(L"\s-1HTTP\s0.Request\*(R" |
192 | or \*(L"XMLHttpRequest\*(R", this returns false. The assumption is that if you're |
193 | doing \s-1XHR\s0, you don't want the request treated as if it comes from a browser. |
194 | .IP "\(bu" 4 |
195 | If the client makes a \s-1GET\s0 request with a query string parameter |
196 | \&\*(L"content-type\*(R", and that type is \fInot\fR an \s-1HTML\s0 type, it is \fInot\fR a browser. |
197 | .IP "\(bu" 4 |
198 | If the client provides an Accept header which includes \*(L"*/*\*(R" as an accepted |
199 | content type, the client is a browser. Specifically, it is \s-1IE7\s0, which submits |
200 | an Accept header of \*(L"*/*\*(R". \s-1IE7\s0's Accept header does not include any html types |
201 | like \*(L"text/html\*(R". |
202 | .IP "\(bu" 4 |
203 | If the client provides an Accept header and accepts either \*(L"text/html\*(R" or |
204 | \&\*(L"application/xhtml+xml\*(R" it is a browser. |
205 | .IP "\(bu" 4 |
206 | If it provides an Accept header of any sort, it is \fInot\fR a browser. |
207 | .IP "\(bu" 4 |
208 | The default is that the client is a browser. |
209 | .PP |
210 | This all works well for my apps, but read it carefully to make sure it meets |
211 | your expectations before using it. |
212 | .SH "AUTHOR" |
213 | .IX Header "AUTHOR" |
214 | Dave Rolsky, \f(CW\*(C`<autarch@urth.org>\*(C'\fR |
215 | .SH "BUGS" |
216 | .IX Header "BUGS" |
217 | Please report any bugs or feature requests to |
218 | \&\f(CW\*(C`bug\-catalyst\-action\-rest@rt.cpan.org\*(C'\fR, or through the web interface at |
219 | <http://rt.cpan.org>. We will be notified, and then you'll automatically be |
220 | notified of progress on your bug as I make changes. |
221 | .SH "COPYRIGHT & LICENSE" |
222 | .IX Header "COPYRIGHT & LICENSE" |
223 | Copyright 2008\-2010 Dave Rolsky, All Rights Reserved. |
224 | .PP |
225 | This program is free software; you can redistribute it and/or modify it under |
226 | the same terms as Perl itself. |