sqlite3-ruby

问题 The latest SQLite3 library available on CentOS 5.6 and which is installed is version 3.3.6. It's my understanding that the sqlite3 gem needs version 3.6 or higher. How do I get my app to work with SQLite3 without upgrading the library on my server? It's in a work environment and I'm simply not allowed to upgrade it. 回答1: You could compile a static library of the version of sqlite you require. Then install the sqlite3 gem with a reference to your new static library. While I haven't tested this

问题 The latest SQLite3 library available on CentOS 5.6 and which is installed is version 3.3.6. It's my understanding that the sqlite3 gem needs version 3.6 or higher. How do I get my app to work with SQLite3 without upgrading the library on my server? It's in a work environment and I'm simply not allowed to upgrade it. 回答1: You could compile a static library of the version of sqlite you require. Then install the sqlite3 gem with a reference to your new static library. While I haven't tested this

问题 I'm using Ruby 2.1.5 and Rails 4.2.1 I'm trying to put some static database entries into a sqlite3 table via seeds.rb. When I run rake db:seed, I get the correct number of rows inserted with appropriate timestamp columns, but the actual data column, name, is not being populated. Name is being printed out inside the loop. db/seed.rb for g in ['Harmony', 'Melody', 'Technique', 'Soloing'] Group.create(name: g) put(g) end app/models/group.rb: class Group < ActiveRecord::Base attr_accessor :name

问题 On a new machine, installed ruby with the 1-click installer for windows. Installed rails 2.3.2 and all associated gems, then I installed the sqlite3 binaries (into the c:\ruby\bin folder). Lastly I did gem install sqlite3-ruby -v=1.2.3 (which is apparently the latest version that works with windows) This error happens when I run rake db:migrate or when any ActiveRecord object is touched at runtime. The error looks like this: ** Invoke db:migrate (first_time) ** Invoke environment (first_time)

问题 I have a simple SQL question. I want to make a 3 column database and I have the following code: sqlite3 meshdb.db "create table t1 (t1key INTEGER PRIMARY KEY, prideID, pubmedID);" When I try to import a simple csv file with two columns (prideID and pubmedID), I get a "expected 3 columns of data but found 2" error. I want the t1key to be an integer, and automatically count up as new fields are added. Do I have to put NOT NULL in front of PRIMARY KEY to for this to work? 回答1: .import does not

问题 I have an invitations table which looks like this sqlite> .schema invitations CREATE TABLE "invitations" ( "id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL , "sender_id" integer , "recipient_email" varchar(255) , "token" varchar(255) , "sent_at" datetime , "team_id" integer , "created_at" datetime , "updated_at" datetime ); CREATE UNIQUE INDEX "index_invitations_on_recipient_email_and_team_id" ON "invitations" ("recipient_email", "team_id"); CREATE INDEX "index_invitations_on_sender_id" ON

问题 I am trying to parse a sqlite3 database in rails 3 (using sqlite3-ruby gem). The database to parse is coming from a file upload. Here is my controller code: require 'fileutils' require 'sqlite3' tmp = params[:file_upload][:my_file] file = params[:file_upload][:my_file].tempfile filename = params[:file_upload][:my_file].original_filename file = File.join("public", params[:file_upload][:my_file].original_filename) FileUtils.cp tmp.path, filename db = SQLite3::Database.new(filename) So it works

问题 I tried to install it as below but it throws error :- "sudo gem install sqlite3-ruby" Building native extensions. This could take a while... ERROR: Error installing sqlite3-ruby: ERROR: Failed to build gem native extension. /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/ Versions/1.8/usr/lib/ruby/ruby.h Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/sqlite3

问题 I have a simple Rails 3.b1 (Ruby 1.9.1) application running on Sqlite3. I have this table: create_table :time_tests do |t| t.time :time end And I see this behavior: irb(main):001:0> tt = TimeTest.new => #<TimeTest id: nil, time: nil> irb(main):002:0> tt.time = Time.zone.now => Mon, 03 May 2010 20:13:21 UTC +00:00 irb(main):003:0> tt.save => true irb(main):004:0> TimeTest.find(:first) => #<TimeTest id: 1, time: "2000-01-01 20:13:21"> So, the time is coming back blank. Checking the table, the

问题 I'm creating a Ruby script to import a tab-delimited text file of about 150k lines into SQLite. Here it is so far: require 'sqlite3' file = File.new("/Users/michael/catalog.txt") string = [] # Escape single quotes, remove newline, split on tabs, # wrap each item in quotes, and join with commas def prepare_for_insert(s) s.gsub(/'/,"\\\\'").chomp.split(/\t/).map {|str| "'#{str}'"}.join(", ") end file.each_line do |line| string << prepare_for_insert(line) end database = SQLite3::Database.new("