By Adam Gamble, Rida Al Barazi
Beginning Rails four is a ebook that might advisor you from by no means having programmed with Ruby, to having a Rails software equipped and deployed to the net. you will find out how to mix the entire elements of Rails to improve your personal internet applications.
lightly publications you thru designing your software, writing assessments for the applying, after which writing the code to make your software paintings as expected.
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Extra info for Beginning Rails 4 (Expert's Voice in Web Development)
It doesn’t appear like a lot used to be released earlier than this day. rather than writing within the date, you place a ? within the spot the place you’d usually write the worth you must locate. The the place process takes the second one aspect within the array, Time. now, and replaces it the place the 1st ? appears to be like. also, the array syntax immediately takes some time and converts it into whatever your database likes. you could invoke the to_sql technique after the the place approach to check up on the issued SQL assertion: >> Article. where("published_at < ? ", Time. now). to_sql => "SELECT \"articles\". * FROM \"articles\" the place (published_at < '2013-04-02 16:27:51. 059277')" You provide it a Time item, and it turns the item into the layout that pleases your database. in case you had handed it a string, it wouldn’t have switched over. you can also move a few details from one other version: >> Article. where("created_at = ? ", Article. final. created_at) => [#