NAME¶
Catalyst::Request - provides information about the current client request
SYNOPSIS¶
$req = $c->request;
$req->address eq "127.0.0.1";
$req->arguments;
$req->args;
$req->base;
$req->body;
$req->body_parameters;
$req->content_encoding;
$req->content_length;
$req->content_type;
$req->cookie;
$req->cookies;
$req->header;
$req->headers;
$req->hostname;
$req->input;
$req->query_keywords;
$req->match;
$req->method;
$req->param;
$req->parameters;
$req->params;
$req->path;
$req->protocol;
$req->query_parameters;
$req->read;
$req->referer;
$req->secure;
$req->captures;
$req->upload;
$req->uploads;
$req->uri;
$req->user;
$req->user_agent;
See also Catalyst, Catalyst::Request::Upload.
DESCRIPTION¶
This is the Catalyst Request class, which provides an interface to data for the
current client request. The request object is prepared by Catalyst::Engine,
thus hiding the details of the particular engine implementation.
METHODS¶
$req->address¶
Returns the IP address of the client.
$req->arguments¶
Returns a reference to an array containing the arguments.
print $c->request->arguments->[0];
For example, if your action was
package MyApp::Controller::Foo;
sub moose : Local {
...
}
and the URI for the request was "
http://.../foo/moose/bah", the string
"bah" would be the first and only argument.
Arguments get automatically URI-unescaped for you.
$req->args¶
Shortcut for "arguments".
$req->base¶
Contains the URI base. This will always have a trailing slash. Note that the URI
scheme (e.g., http vs. https) must be determined through heuristics; depending
on your server configuration, it may be incorrect. See $req->secure for
more info.
If your application was queried with the URI
"
http://localhost:3000/some/path" then "base" is
"
http://localhost:3000/".
$req->body¶
Returns the message body of the request, as returned by HTTP::Body: a string,
unless Content-Type is "application/x-www-form-urlencoded",
"text/xml", or "multipart/form-data", in which case a
File::Temp object is returned.
$req->body_parameters¶
Returns a reference to a hash containing body (POST) parameters. Values can be
either a scalar or an arrayref containing scalars.
print $c->request->body_parameters->{field};
print $c->request->body_parameters->{field}->[0];
These are the parameters from the POST part of the request, if any.
$req->body_params¶
Shortcut for body_parameters.
$req->content_encoding¶
Shortcut for $req->headers->content_encoding.
$req->content_length¶
Shortcut for $req->headers->content_length.
$req->content_type¶
Shortcut for $req->headers->content_type.
$req->cookie¶
A convenient method to access $req->cookies.
$cookie = $c->request->cookie('name');
@cookies = $c->request->cookie;
$req->cookies¶
Returns a reference to a hash containing the cookies.
print $c->request->cookies->{mycookie}->value;
The cookies in the hash are indexed by name, and the values are
CGI::Simple::Cookie objects.
Shortcut for $req->headers->header.
Returns an HTTP::Headers object containing the headers for the current request.
print $c->request->headers->header('X-Catalyst');
$req->hostname¶
Returns the hostname of the client. Use "$req->uri->host" to get
the hostname of the server.
Alias for $req->body.
$req->query_keywords¶
Contains the keywords portion of a query string, when no '=' signs are present.
http://localhost/path?some+keywords
$c->request->query_keywords will contain 'some keywords'
$req->match¶
This contains the matching part of a Regex action. Otherwise it returns the same
as 'action', except for default actions, which return an empty string.
$req->method¶
Contains the request method ("GET", "POST",
"HEAD", etc).
$req->param¶
Returns GET and POST parameters with a CGI.pm-compatible param method. This is
an alternative method for accessing parameters in $c->req->parameters.
$value = $c->request->param( 'foo' );
@values = $c->request->param( 'foo' );
@params = $c->request->param;
Like CGI, and
unlike earlier versions of Catalyst, passing multiple
arguments to this method, like this:
$c->request->param( 'foo', 'bar', 'gorch', 'quxx' );
will set the parameter "foo" to the multiple values "bar",
"gorch" and "quxx". Previously this would have added
"bar" as another value to "foo" (creating it if it didn't
exist before), and "quxx" as another value for "gorch".
NOTE this is considered a legacy interface and care should be taken when
using it. "scalar $c->req->param( 'foo' )" will return only
the first "foo" param even if multiple are present;
"$c->req->param( 'foo' )" will return a list of as many are
present, which can have unexpected consequences when writing code of the form:
$foo->bar(
a => 'b',
baz => $c->req->param( 'baz' ),
);
If multiple "baz" parameters are provided this code might corrupt data
or cause a hash initialization error. For a more straightforward interface see
"$c->req->parameters".
$req->parameters¶
Returns a reference to a hash containing GET and POST parameters. Values can be
either a scalar or an arrayref containing scalars.
print $c->request->parameters->{field};
print $c->request->parameters->{field}->[0];
This is the combination of "query_parameters" and
"body_parameters".
$req->params¶
Shortcut for $req->parameters.
$req->path¶
Returns the path, i.e. the part of the URI after $req->base, for the current
request.
http://localhost/path/foo
$c->request->path will contain 'path/foo'
$req->path_info¶
Alias for path, added for compatibility with CGI.
$req->protocol¶
Returns the protocol (HTTP/1.0 or HTTP/1.1) used for the current request.
$req->query_parameters¶
$req->query_params¶
Returns a reference to a hash containing query string (GET) parameters. Values
can be either a scalar or an arrayref containing scalars.
print $c->request->query_parameters->{field};
print $c->request->query_parameters->{field}->[0];
$req->read( [$maxlength] )¶
Reads a chunk of data from the request body. This method is intended to be used
in a while loop, reading $maxlength bytes on every call. $maxlength defaults
to the size of the request if not specified.
$req->read_chunk(\$buff, $max)¶
Reads a chunk..
You have to set MyApp->config(parse_on_demand => 1) to use this directly.
$req->referer¶
Shortcut for $req->headers->referer. Returns the referring page.
$req->secure¶
Returns true or false, indicating whether the connection is secure (https). Note
that the URI scheme (e.g., http vs. https) must be determined through
heuristics, and therefore the reliability of $req->secure will depend on
your server configuration. If you are setting the HTTPS environment variable,
$req->secure should be valid.
$req->captures¶
Returns a reference to an array containing captured args from chained actions or
regex captures.
my @captures = @{ $c->request->captures };
$req->upload¶
A convenient method to access $req->uploads.
$upload = $c->request->upload('field');
@uploads = $c->request->upload('field');
@fields = $c->request->upload;
for my $upload ( $c->request->upload('field') ) {
print $upload->filename;
}
$req->uploads¶
Returns a reference to a hash containing uploads. Values can be either a
Catalyst::Request::Upload object, or an arrayref of Catalyst::Request::Upload
objects.
my $upload = $c->request->uploads->{field};
my $upload = $c->request->uploads->{field}->[0];
$req->uri¶
Returns a URI object for the current request. Stringifies to the URI text.
$req->mangle_params( { key => 'value' }, $appendmode);¶
Returns a hashref of parameters stemming from the current request's params, plus
the ones supplied. Keys for which no current param exists will be added, keys
with undefined values will be removed and keys with existing params will be
replaced. Note that you can supply a true value as the final argument to
change behavior with regards to existing parameters, appending values rather
than replacing them.
A quick example:
# URI query params foo=1
my $hashref = $req->mangle_params({ foo => 2 });
# Result is query params of foo=2
versus append mode:
# URI query params foo=1
my $hashref = $req->mangle_params({ foo => 2 }, 1);
# Result is query params of foo=1&foo=2
This is the code behind "uri_with".
$req->uri_with( { key => 'value' } );¶
Returns a rewritten URI object for the current request. Key/value pairs passed
in will override existing parameters. You can remove an existing parameter by
passing in an undef value. Unmodified pairs will be preserved.
You may also pass an optional second parameter that puts "uri_with"
into append mode:
$req->uri_with( { key => 'value' }, { mode => 'append' } );
See "mangle_params" for an explanation of this behavior.
$req->remote_user¶
Returns the value of the "REMOTE_USER" environment variable.
$req->user_agent¶
Shortcut to $req->headers->user_agent. Returns the user agent (browser)
version string.
SETUP METHODS¶
You should never need to call these yourself in application code, however they
are useful if extending Catalyst by applying a request role.
Sets up the "$res->headers" accessor.
$self->prepare_body()¶
Sets up the body using HTTP::Body
$self->prepare_body_chunk()¶
Add a chunk to the request body.
$self->prepare_body_parameters()¶
Sets up parameters from body.
$self->prepare_cookies()¶
Parse cookies from header. Sets up a CGI::Simple::Cookie object.
$self->prepare_connection()¶
Sets up various fields in the request like the local and remote addresses,
request method, hostname requested etc.
$self->prepare_parameters()¶
Ensures that the body has been parsed, then builds the parameters, which are
combined from those in the request and those in the body.
This method is the builder for the 'parameters' attribute.
Provided by Moose
AUTHORS¶
Catalyst Contributors, see Catalyst.pm
COPYRIGHT¶
This library is free software. You can redistribute it and/or modify it under
the same terms as Perl itself.