Introduction ------------ This is a tiny wrapper around the SQLite C API that's written in RubyMotion. It is intentionally bare so as to limit the surface area of code that interacts with the raw C API (misuse of the C API can cause resource leaks and seg faults). Think of it more as a driver for SQLite than anything else. Whenever possible, it uses Ruby idioms like blocks and exceptions. [![Code Climate](https://codeclimate.com/github/rubymotion-community/motion-sqlite3.png)](https://codeclimate.com/github/rubymotion-community/motion-sqlite3) [![Build Status](https://travis-ci.org/rubymotion-community/motion-sqlite3.png?branch=master)](https://travis-ci.org/rubymotion-community/motion-sqlite3) [![Gem Version](https://badge.fury.io/rb/motion-sqlite3.png)](http://badge.fury.io/rb/motion-sqlite3) Is it any good? --------------- Yes. Sample code ----------- #### DB in memory ```ruby db = SQLite3::Database.new(":memory:") db.execute("CREATE TABLE test (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, age INTEGER)") db.execute("INSERT INTO test (name, age) VALUES (?, ?)", ["brad", 28]) db.execute("INSERT INTO test (name, age) VALUES (?, ?)", ["sparky", 24]) rows = [] db.execute("SELECT * FROM test") do |row| rows << row end rows.should == [ { id: 1, name: "brad", age: 28 }, { id: 2, name: "sparky", age: 24 } ] ``` #### DB in your resources folder ```ruby # File is stored in your /project/resources/ folder db = SQLite3::Database.new(File.join(App.resources_path, "my_db.sqlite")) rows = [] db.execute("SELECT * FROM test ORDER BY id") do |row| rows << row end ``` *this code assumes you're using BubbleWrap for access to `App.resources_path`. Usage ---------- * Pass a filename to the constructor, or ":memory:". The database is held open for the lifetime of the object. * Use `execute` to run SQL statements. All SQL statements are first prepared, and parameters can be passed as an Array or a Hash. If a Hash is passed, then the SQLite named parameter syntax is assumed to be in use. * Use `execute_debug` to see the SQL statement and paramaters passed in the REPL. You should not use this method in production. * Use `execute_scalar` to run SQL statements and return the first column of the first row. This is useful for queries like `SELECT COUNT(*) FROM posts`.