Contents

# Samouczek

1. {%= link_to "Rozkład jazdy", "/intro" %}
1. {%= link_to "Pliki tekstowe dla data persistence", "/using-plain-text-files-for-data-persistence" %}

## Datamapper

<blockquote>
 {%= image_tag "/images/conan_doyle.jpg", :alt => "[Sir Arthur Conan Doyle]" %}
 <p>
   I never guess. It is a capital mistake to theorize before one has
   data. Insensibly one begins to twist facts to suit theories, instead
   of theories to suit facts.
 </p>
 <p class="author">— Sir Arthur Conan Doyle</p>
</blockquote>

## Instalacja

Instalujemy następujące gemy:

    sudo gem install dm-core dm-more
    sudo gem install do_sqlite3 do_postgres
    sudo gem install dm-validations dm-timestamps 
    sudo gem install dm-aggregates dm-types 

oraz trochę wtyczek. Wszystkie są 
[opisane tutaj](http://datamapper.org/doku.php?id=docs:more).


## Zestawianie połączenia z bazą

SQLite

    :::ruby
    # baza danych w RAM
    DataMapper.setup(:default, 'sqlite3::memory:')
    # baza danych plikiem
    DataMapper.setup(:default, "sqlite3:///#{Dir.pwd}/test.sqlite")

PostgreSQL

    :::ruby
    # Postgres 8.2+
    DataMapper.setup(:default, 'postgres://localhost/test')

**Uwaga**: You may be wondering how to be more specific about your database
connection. The second argument can be a hash, containing :host,
:adapter, :database, :username, :password, :socket, etc. These are
database-specific but this ought to get you going.

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
wbzyl-datamapper-tutorial-0.0.10	lib/views/main.rdiscount
wbzyl-datamapper-tutorial-0.0.11	lib/views/main.rdiscount
wbzyl-datamapper-tutorial-0.0.9	lib/views/main.rdiscount