Gem::Load error

Rails
1

hi everyone…
i install rails and all the things which is need for.
i create a new project
i create datbase’s and set the database.yml file

when i type this(in the project directory)=> rails server

i get this =>

Warning: Running gem pristine --all to regenerate your installed
gemspecs (and deleting then reinstalling your bundle if you use bundle
–path) will improve the startup performance of Spring.
=> Booting Thin
=> Rails 4.2.5 application starting in development on
http://localhost:3000
=> Run rails server -h for more startup options
=> Ctrl-C to shutdown server

Thin web server (v1.3.1 codename Triple Espresso)
Maximum connections set to 1024
Listening on localhost:3000, CTRL+C to stop

when i go to browser and type this=> localhost:3000. i get this
error=>

Gem::Loaderror

Specified ‘postgresql’ for database adapter, but the gem is not loaded.
Add gem 'pg' to your Gemfile (and ensure its version is at the minimum
required by ActiveRecord).

for fixing it i uninstall all the gems and reinstall all of them.
but again i have this error.

2

What does your Gemfile look like? Does it have the pg gem listed?

-James

3

James Jelinek (shakycode) wrote in post #1180882:

What does your Gemfile look like? Does it have the pg gem listed?

-James

i intsall pg gem and test again but agian have sampe problem.

4

Ok, but would you mind posting your Gemfile in a github gist so we can
look at it? What happens when you run “bundle install” from the command
line? Does it install all of the gems in your Gemfile?

-James

5

On 25 January 2016 at 21:24, Benyamin Pm [email protected] wrote:

Specified ‘postgresql’ for database adapter, but the gem is not loaded.
Add gem 'pg' to your Gemfile (and ensure its version is at the minimum
required by ActiveRecord).

for fixing it i uninstall all the gems and reinstall all of them.
but again i have this error.

I suggest you start by working right through a good tutorial such as
railstutorial.org (which is free to use online). This can be worked
through using a development environment in the cloud so there is no
need to worry about whether you have the right stuff installed on your
machine. Once you have worked through the tutorial you should have a
grasp of the basics or RoR and be ready to go with your own projects.
The couple of days spent will be very soon recovered in saved time
during the next phase of your learning.

Colin

6

James Jelinek (shakycode) wrote in post #1180884:

Ok, but would you mind posting your Gemfile in a github gist so we can
look at it? What happens when you run “bundle install” from the command
line? Does it install all of the gems in your Gemfile?

-James

bundle install work’s perfectly and don’t return any error.

Bundle complete! 12 Gemfile dependencies, 54 gems now installed.
Use bundle show [gemname] to see where a bundled gem is installed.

7

How about giving us the output of bundle list? Or at the very least
bundle list pg?

PS If you see pg listed there you’re gonna have to give more information
like the stacktrace, error messages in the server window, your
database.yml file.

If you want help at least give us a fighting chance…

8

On 25 January 2016 at 22:13, Benyamin Pm [email protected] wrote:

hi scott.

please take a look at this =>
http://8pic.ir/images/cqpc93bssq0dyvqqy33e.png

Why is it apparently so difficult for people to supply the information
asked for? Please just copy/paste your Gemfile here so that we can
see it. We don’t want to have to look at screenshots, and even on the
screenshot you have not shown Gemfile.

Also please post Gemfile.lock

Colin

9

Scott E. wrote in post #1180887:

How about giving us the output of bundle list? Or at the very least
bundle list pg?

PS If you see pg listed there you’re gonna have to give more information
like the stacktrace, error messages in the server window, your
database.yml file.

If you want help at least give us a fighting chance…

hi scott.

i take a screenshot
please take a look at this =>

10

What specifically is the OS here. I’m not certain I recognize the icons
on the dock.

11

Colin L. wrote in post #1180889:

On 25 January 2016 at 22:13, Benyamin Pm [email protected] wrote:

hi scott.

please take a look at this =>
http://8pic.ir/images/cqpc93bssq0dyvqqy33e.png

Why is it apparently so difficult for people to supply the information
asked for? Please just copy/paste your Gemfile here so that we can
see it. We don’t want to have to look at screenshots, and even on the
screenshot you have not shown Gemfile.

Also please post Gemfile.lock

Colin

sorry. i just think u want to see what happened in terminal/browser and
database file.

list of gems :

*** LOCAL GEMS ***

actionmailer (4.2.5)
actionpack (4.2.5)
actionview (4.2.5)
activejob (4.2.5)
activemodel (4.2.5)
activerecord (4.2.5)
activesupport (4.2.5)
adapter (0.7.1)
addressable (2.3.6)
ansi (1.4.3)
arel (6.0.3)
atomic (1.1.16)
bigdecimal (1.2.4)
binding_of_caller (0.7.2)
buftok (0.2.0)
builder (3.2.2)
bundler (1.11.2, 1.7.4)
byebug (8.2.1)
coffee-rails (4.1.1)
coffee-script (2.4.1)
coffee-script-source (1.10.0)
concurrent-ruby (1.0.0)
daemons (1.1.9)
data_objects (0.10.14)
debug_inspector (0.0.2)
diff-lcs (1.2.5)
dm-core (1.2.1)
dm-do-adapter (1.2.0)
dm-migrations (1.2.0)
dm-serializer (1.2.2)
dm-sqlite-adapter (1.2.0)
do_sqlite3 (0.10.14)
em-websocket (0.5.1)
equalizer (0.0.9)
erubis (2.7.0)
eventmachine (1.0.3)
execjs (2.6.0, 2.2.1)
faraday (0.9.0)
ffi (1.9.6)
geoip (1.4.0)
globalid (0.3.6)
http (0.6.1)
http_parser.rb (0.6.0)
httpclient (2.3.3)
i18n (0.7.0)
io-console (0.4.2)
jbuilder (2.4.0)
jquery-rails (4.1.0)
json (1.8.3, 1.8.1)
librex (0.0.68)
libv8 (3.16.14.3)
loofah (2.0.3)
mail (2.6.3)
memoizable (0.4.2)
mime (0.4.2)
mime-types (2.99, 1.25)
mini_exiftool (1.6.0)
mini_portile2 (2.0.0)
minitest (5.8.4, 4.7.5)
mojo_magick (0.5.6)
msfrpc-client (1.0.1)
msgpack (0.5.8)
multi_json (1.11.2, 1.10.1)
multipart-post (1.2.0)
naught (1.0.0)
net-http-persistent (2.9)
nokogiri (1.6.7.2)
oj (2.10.3)
parseconfig (1.0.2)
pg (0.18.4)
psych (2.0.5)
qr4r (0.4.0)
rack (1.6.4, 1.5.2)
rack-protection (1.5.2)
rack-test (0.6.3)
rails (4.2.5)
rails-deprecated_sanitizer (1.0.3)
rails-dom-testing (1.0.7)
rails-html-sanitizer (1.0.2)
railties (4.2.5)
rainbow (2.0.0)
rake (10.5.0, 10.3.2, 10.1.0)
rdoc (4.2.1, 4.1.0)
rdoc-data (4.1.0)
ref (1.0.5)
rexec (1.6.3)
ruby-progressbar (1.6.0)
rubydns (0.7.0)
rubyzip (1.1.6)
sass (3.4.21)
sass-rails (5.0.4)
sdoc (0.4.1)
simple_oauth (0.2.0)
simplecov (0.7.1)
sinatra (1.4.5)
spider (0.4.4)
spring (1.6.2)
sprockets (3.5.2)
sprockets-rails (3.0.0)
sqlite3 (1.3.11, 1.3.9)
term-ansicolor (1.3.0)
terminal-table (1.4.5)
test-unit (2.1.5.0)
therubyracer (0.12.1)
thor (0.19.1)
thread_safe (0.3.5, 0.3.3)
tilt (2.0.2, 1.4.1)
tins (1.1.0)
turbolinks (2.5.3)
twitter (5.11.0)
tzinfo (1.2.2)
uglifier (2.7.2, 2.5.3)
web-console (2.2.1)
yajl-ruby (1.2.0)

12

On Tue, Jan 26, 2016, at 07:13, Benyamin Pm wrote:

hi scott.

please take a look at this =>
http://8pic.ir/images/cqpc93bssq0dyvqqy33e.png

  • the output of bundle list pg says “Could not find gem ‘pg’.”
  • the error page says “Add gem 'pg' to your Gemfile”

Have you read it? And have you actually done it? (hint: gem install pg
is not the same thing)

13

Also what version of Ruby are you running?

This might be a good place to also look for help:
https://bitbucket.org/ged/ruby-pg/issues?status=new&status=open

14

On 25 Jan 2016 22:36, “Benyamin Pm” [email protected] wrote:

asked for? Please just copy/paste your Gemfile here so that we can
list of gems :

*** LOCAL GEMS ***

That is not the file Gemfile which is a file in the top level of your
application. You need to add pg to that and run bundle. The fact you did
not realise this shows that you really need to work through the tutorial
that I suggested.

Colin

arel (6.0.3)
concurrent-ruby (1.0.0)
em-websocket (0.5.1)
httpclient (2.3.3)
mime (0.4.2)
net-http-persistent (2.9)
rails-deprecated_sanitizer (1.0.3)
rubydns (0.7.0)
sprockets-rails (3.0.0)
twitter (5.11.0)
tzinfo (1.2.2)
uglifier (2.7.2, 2.5.3)
web-console (2.2.1)
yajl-ruby (1.2.0)

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.

15

On 26 January 2016 at 07:48, Benyamin Pm [email protected] wrote:

not realise this shows that you really need to work through the tutorial
that I suggested.

Colin

gem ‘rails’, ‘4.2.5’

Call ‘byebug’ anywhere in the code to stop execution and get a

the background. Read more: GitHub - rails/spring: Rails application preloader
gem ‘spring’
end

I don’t see pg in there. As has been pointed out numerous times
already the error message says you need to add pg to Gemfile. Also
you can take out sqlite3, under the line that says

Use sqlite3 as the database for Active Record

How are you getting on with the tutorial?

Colin

16

Colin L. wrote in post #1180898:

On 25 Jan 2016 22:36, “Benyamin Pm” [email protected] wrote:

asked for? Please just copy/paste your Gemfile here so that we can
list of gems :

*** LOCAL GEMS ***

That is not the file Gemfile which is a file in the top level of your
application. You need to add pg to that and run bundle. The fact you did
not realise this shows that you really need to work through the tutorial
that I suggested.

Colin

arel (6.0.3)
concurrent-ruby (1.0.0)
em-websocket (0.5.1)
httpclient (2.3.3)
mime (0.4.2)
net-http-persistent (2.9)
rails-deprecated_sanitizer (1.0.3)
rubydns (0.7.0)
sprockets-rails (3.0.0)
twitter (5.11.0)
tzinfo (1.2.2)
uglifier (2.7.2, 2.5.3)
web-console (2.2.1)
yajl-ruby (1.2.0)

–
Posted via http://www.ruby-forum.com/.

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“Ruby on Rails: Talk” group.
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.

im sorry.

gem file :

source ‘https://rubygems.org’

Bundle edge Rails instead: gem ‘rails’, github: ‘rails/rails’

gem ‘rails’, ‘4.2.5’

Use sqlite3 as the database for Active Record

gem ‘sqlite3’

Use SCSS for stylesheets

gem ‘sass-rails’, ‘~> 5.0’

Use Uglifier as compressor for JavaScript assets

gem ‘uglifier’, ‘>= 1.3.0’

Use CoffeeScript for .coffee assets and views

gem ‘coffee-rails’, ‘~> 4.1.0’

See GitHub - rails/execjs: Run JavaScript code from Ruby for more supported runtimes

gem ‘therubyracer’, platforms: :ruby

Use jquery as the JavaScript library

gem ‘jquery-rails’

Turbolinks makes following links in your web application faster. Read

more: GitHub - turbolinks/turbolinks-classic: Classic version of Turbolinks. Now deprecated in favor of Turbolinks 5.
gem ‘turbolinks’

Build JSON APIs with ease. Read more:

gem ‘jbuilder’, ‘~> 2.0’

bundle exec rake doc:rails generates the API under doc/api.

gem ‘sdoc’, ‘~> 0.4.0’, group: :doc

Use ActiveModel has_secure_password

gem ‘bcrypt’, ‘~> 3.1.7’

Use Unicorn as the app server

gem ‘unicorn’

Use Capistrano for deployment

gem ‘capistrano-rails’, group: :development

group :development, :test do

Call ‘byebug’ anywhere in the code to stop execution and get a

debugger console
gem ‘byebug’
end

group :development do

Access an IRB console on exception pages or by using <%= console %>

in views
gem ‘web-console’, ‘~> 2.0’

Spring speeds up development by keeping your application running in

the background. Read more: GitHub - rails/spring: Rails application preloader
gem ‘spring’
end

Gemfile . lock

GEM
remote: https://rubygems.org/
specs:
actionmailer (4.2.5)
actionpack (= 4.2.5)
actionview (= 4.2.5)
activejob (= 4.2.5)
mail (~> 2.5, >= 2.5.4)
rails-dom-testing (~> 1.0, >= 1.0.5)
actionpack (4.2.5)
actionview (= 4.2.5)
activesupport (= 4.2.5)
rack (~> 1.6)
rack-test (~> 0.6.2)
rails-dom-testing (~> 1.0, >= 1.0.5)
rails-html-sanitizer (~> 1.0, >= 1.0.2)
actionview (4.2.5)
activesupport (= 4.2.5)
builder (~> 3.1)
erubis (~> 2.7.0)
rails-dom-testing (~> 1.0, >= 1.0.5)
rails-html-sanitizer (~> 1.0, >= 1.0.2)
activejob (4.2.5)
activesupport (= 4.2.5)
globalid (>= 0.3.0)
activemodel (4.2.5)
activesupport (= 4.2.5)
builder (~> 3.1)
activerecord (4.2.5)
activemodel (= 4.2.5)
activesupport (= 4.2.5)
arel (~> 6.0)
activesupport (4.2.5)
i18n (~> 0.7)
json (~> 1.7, >= 1.7.7)
minitest (~> 5.1)
thread_safe (~> 0.3, >= 0.3.4)
tzinfo (~> 1.1)
arel (6.0.3)
binding_of_caller (0.7.2)
debug_inspector (>= 0.0.1)
builder (3.2.2)
byebug (8.2.1)
coffee-rails (4.1.1)
coffee-script (>= 2.2.0)
railties (>= 4.0.0, < 5.1.x)
coffee-script (2.4.1)
coffee-script-source
execjs
coffee-script-source (1.10.0)
concurrent-ruby (1.0.0)
debug_inspector (0.0.2)
erubis (2.7.0)
execjs (2.6.0)
globalid (0.3.6)
activesupport (>= 4.1.0)
i18n (0.7.0)
jbuilder (2.4.0)
activesupport (>= 3.0.0, < 5.1)
multi_json (~> 1.2)
jquery-rails (4.1.0)
rails-dom-testing (~> 1.0)
railties (>= 4.2.0)
thor (>= 0.14, < 2.0)
json (1.8.3)
loofah (2.0.3)
nokogiri (>= 1.5.9)
mail (2.6.3)
mime-types (>= 1.16, < 3)
mime-types (2.99)
mini_portile2 (2.0.0)
minitest (5.8.4)
multi_json (1.11.2)
nokogiri (1.6.7.2)
mini_portile2 (~> 2.0.0.rc2)
rack (1.6.4)
rack-test (0.6.3)
rack (>= 1.0)
rails (4.2.5)
actionmailer (= 4.2.5)
actionpack (= 4.2.5)
actionview (= 4.2.5)
activejob (= 4.2.5)
activemodel (= 4.2.5)
activerecord (= 4.2.5)
activesupport (= 4.2.5)
bundler (>= 1.3.0, < 2.0)
railties (= 4.2.5)
sprockets-rails
rails-deprecated_sanitizer (1.0.3)
activesupport (>= 4.2.0.alpha)
rails-dom-testing (1.0.7)
activesupport (>= 4.2.0.beta, < 5.0)
nokogiri (~> 1.6.0)
rails-deprecated_sanitizer (>= 1.0.1)
rails-html-sanitizer (1.0.3)
loofah (~> 2.0)
railties (4.2.5)
actionpack (= 4.2.5)
activesupport (= 4.2.5)
rake (>= 0.8.7)
thor (>= 0.18.1, < 2.0)
rake (10.5.0)
rdoc (4.2.1)
json (~> 1.4)
sass (3.4.21)
sass-rails (5.0.4)
railties (>= 4.0.0, < 5.0)
sass (~> 3.1)
sprockets (>= 2.8, < 4.0)
sprockets-rails (>= 2.0, < 4.0)
tilt (>= 1.1, < 3)
sdoc (0.4.1)
json (~> 1.7, >= 1.7.7)
rdoc (~> 4.0)
spring (1.6.2)
sprockets (3.5.2)
concurrent-ruby (~> 1.0)
rack (> 1, < 3)
sprockets-rails (3.0.0)
actionpack (>= 4.0)
activesupport (>= 4.0)
sprockets (>= 3.0.0)
sqlite3 (1.3.11)
thor (0.19.1)
thread_safe (0.3.5)
tilt (2.0.2)
turbolinks (2.5.3)
coffee-rails
tzinfo (1.2.2)
thread_safe (~> 0.1)
uglifier (2.7.2)
execjs (>= 0.3.0)
json (>= 1.8.0)
web-console (2.2.1)
activemodel (>= 4.0)
binding_of_caller (>= 0.7.2)
railties (>= 4.0)
sprockets-rails (>= 2.0, < 4.0)

PLATFORMS
ruby

DEPENDENCIES
byebug
coffee-rails (~> 4.1.0)
jbuilder (~> 2.0)
jquery-rails
rails (= 4.2.5)
sass-rails (~> 5.0)
sdoc (~> 0.4.0)
spring
sqlite3
turbolinks
uglifier (>= 1.3.0)
web-console (~> 2.0)

17

On 26 January 2016 at 09:52, Benyamin Pm [email protected] wrote:

Call ‘byebug’ anywhere in the code to stop execution and get a

How are you getting on with the tutorial?

Bundle edge Rails instead: gem ‘rails’, github: ‘rails/rails’

gem ‘rails’, ‘4.2.5’
gem ‘pg’

and i go to terminal and type ‘gem install pg’

You should have run
bundle install
or just
bundle
there is no need to run gem install pg though it will not do any harm.

then type=> bunlde show pg
and i get the path=> /var/lib/gems/2.1.0/gems/pg-0.18.4

befor that , when i type this. i get this=> Could not find gem ‘pg’.

now the error is Gone! :wink:

I am surprised the error is gone if you have not run bundle install or
bundle.

Colin

18

Colin L. wrote in post #1180906:

On 26 January 2016 at 07:48, Benyamin Pm [email protected] wrote:

not realise this shows that you really need to work through the tutorial
that I suggested.

Colin

gem ‘rails’, ‘4.2.5’

Call ‘byebug’ anywhere in the code to stop execution and get a

the background. Read more: GitHub - rails/spring: Rails application preloader
gem ‘spring’
end

I don’t see pg in there. As has been pointed out numerous times
already the error message says you need to add pg to Gemfile. Also
you can take out sqlite3, under the line that says

Use sqlite3 as the database for Active Record

How are you getting on with the tutorial?

Colin

i just edit source url from https://rubygems.org to http://rubygems.org
and add gem ‘pg’ in Gemfile like this=>

source ‘http://rubygems.org’

Bundle edge Rails instead: gem ‘rails’, github: ‘rails/rails’

gem ‘rails’, ‘4.2.5’
gem ‘pg’

and i go to terminal and type ‘gem install pg’
then type=> bunlde show pg
and i get the path=> /var/lib/gems/2.1.0/gems/pg-0.18.4

befor that , when i type this. i get this=> Could not find gem ‘pg’.

now the error is Gone! :wink:

ty Colin