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$self->req->json is set from the
message body, but a GET request has no body, only a URL (so
setting content-type on a GET request doesn't really make sense -
that is the content type of the message body).
jQuery's $.ajax() took whatever you put in the data field and sent
it as a urlencoded query string, it generated a header from your
contentType field but it ignored the dataType argument, which is
why you need to JSON.stringify your data yourself.
If you really want to do this (you probably shouldn't), maybe
define a helper in your app to decode JSON from the query string.
On 06/03/2014 06:22 AM, Baggio wrote:
Thanks for your quick response, but maybe I've done
something wrongly, I still have no clues why I can't have the
$self->req->json set, would you plase point out the
mistakes I've made? thank you.
Here is the AJAX GET Request
$.ajax({
url: '<%= url_for('/LessonList') %>',
type: 'GET',
contentType: 'application/json; charset=utf-8',
dataType: 'json',
data: JSON.stringify({ Grade:
this.options[this.selectedIndex].text }),
}).done( function (data) {
alert("Got The Lesson List: " + data);
} );
Here is the handler for the corresponding route
sub lessonList {
my $ret;
my $self = shift;
my $m = $self->req->method;
my $j = $self->req->json;
$self->render( json => $j );
}
Here is the Content of $self->req, it seems that the data
of the GET request is stored in
$self->req->url->query but not $self->req->json
$VAR1 = bless( {
'events' => {},
'version' => '1.1',
'max_message_size' => 10485760,
'max_line_size' => 10240,
'method' => 'GET',
'cookies' => {},
'json' => undef,
'content' => bless( {
'raw_size' => 372,
'body' => 2,
'read' => sub {
"DUMMY" },
'real_size' => 0,
'pre_buffer' => '',
'header_size' => 372,
'state' => 'finished',
'buffer' => '',
'events' => {
'read'
=> [
$VAR1->{'content'}{'read'}
]
},
'headers' => bless( {
'headers' => {
'accept-encoding' => [
[
'gzip, deflate'
]
],
'dnt' => [
[
'1'
]
],
'host' => [
[
'127.1:3000'
]
],
'content-type' => [
[
'application/json; charset=utf-8'
]
],
'accept-language' => [
[
'en-US,en;q=0.5'
]
],
'referer' => [
[
' MailScanner warning: numerical links are often malicious: http://127.1:3000/lesson'
]
],
'accept' => [
[
'application/json, text/_javascript_, */*; q=0.01'
]
],
'x-requested-with' => [
[
'XMLHttpRequest'
]
],
'connection' => [
[
'keep-alive'
]
],
'user-agent' => [
[
'Mozilla/5.0 (X11; Linux x86_64; rv:29.0) Gecko/20100101
Firefox/29.0'
]
]
},
'cache' => [],
'max_line_size' => 10240,
'normalcase' => {
'referer' => 'Referer',
'x-requested-with' => 'X-Requested-With'
},
'state' => 'finished'
},
'Mojo::Headers' ),
'auto_upgrade' => 1,
'asset' => bless( {
'content' => '',
'auto_upgrade' => 1
},
'Mojo::Asset::Memory' ),
'size' => 0
}, 'Mojo::Content::Single'
),
'finished' => 1,
'raw_size' => 428,
'url' => bless( {
'scheme' => undef,
'fragment' => undef,
'path' => bless( {
'path'
=> '/LessonList',
'charset'
=> 'UTF-8'
},
'Mojo::Path' ),
'base' => bless( {
'scheme'
=> 'http',
'port'
=> '3000',
'host'
=> '127.1'
},
'Mojo::URL' ),
'query' => bless( {
'string'
=> '{%22Grade%22:%225%22}'
},
'Mojo::Parameters' )
}, 'Mojo::URL' ),
'state' => 'finished'
}, 'Mojo::Message::Request' );
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