Re: [dancer-users] Question on MongoDB and Dancer

19 Oct 2017

      Thanks Richard and everyone,

I added the ".item" so my view shows: [% entries.$id.item('time') %] I
still don't see any results :(

I now see in my terminal the following: Argument "client" isn't numeric in
numeric comparison (<=>)
Which from what I can tell from Gabor's great site
https://perlmaven.com/argument-isnt-numeric-in-numeric is some numeric
operation problem.

Do you have any examples of controllers passing Mongo data to views so I
can compare?

My code so far - perhaps the controller is the issue?

sub connect_mongo {
    my $client = MongoDB->connect('mongodb://a.b.c.d') or die "Error
connecting to Mongo";
my $db = $client->get_database( 'lfi-perl' );
return($db);
}

get '/mongo' => sub {
    my $db = connect_mongo();
my $docs = $db->get_collection( 'Test-Collection' );
my $all_docs;
     template 'show_mongo.tt', {
         'entries' => $all_docs = $docs->find(),
     };
};

Appreciate your help,

Gavin

Best Regards,

Gavin Colborne

Managing Director,

Tele:     0207 193 2014
Mobile: 0788 400 4339
Skype: gavincolborne
Visit: www.littleforest.co.uk

[image: Little Forest LFi] <http://www.littleforest.co.uk/>

On 18 October 2017 at 10:13, Richard Jones <ra.jones@dpw.clara.co.uk> wrote:
...
I've been caught by that before. Try [% entries.$id.item('_id') %]. For
some reason (would interested to learn what), TT doesn't seem to be able to
cope with leading underscores in data structures. You can prove entries
contains data using:
[% USE Dumper(Indent=1) %]
[% FOREACH id IN entries %]
  <pre>[% Dumper.dump(id) %]</pre>
[% END %]
or just [% Dumper.dump(entries) %]
On 18/10/2017 06:28, Gavin Colborne wrote:
Hi Dancers,
I am pretty new to Dancer and really like the light nature of the
framework.
I am trying to create a route which will show data from a MongoDB
collection and struggling with the syntax.
I have the following in my app:
sub connect_mongo {
    my $client = MongoDB->connect('mongodb://a.b.c.d') or die "Error
connecting to Mongo";
my $db = $client->get_database( 'lfi-perl' );
return($db);
}
get '/mongo' => sub {
    my $db = connect_mongo();
my $docs = $db->get_collection( 'Test-Collection' );
my $all_docs;
     template 'show_mongo.tt', {
         'entries' => $all_docs = $docs->find(),
     };
};
Then in my view the following:
[% FOREACH id IN entries.keys.nsort %]
[% entries.$id._id %]
I am not able to see any data in my view but am also not seeing any errors.
Any examples of getting data from Mongo in Dancer would be really helpful.
Thank you in advance,
Gavin
Best Regards,
Gavin Colborne
Managing Director,
Tele:     0207 193 2014
Mobile: 0788 400 4339
Skype: gavincolborne
Visit: www.littleforest.co.uk
[image: Little Forest LFi] <http://www.littleforest.co.uk/>
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