Thursday, 15 January 2009

  • Rails format

    Rails要回返啲嘢畀client之前,會check返有client有send啲乜Accept過來。

    畀個例
    首先要/objects/1.html
    Client交呢個Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
    Rails就會搵html個項
    respond_to do |format|
      format.html ...
      format.xml ...
      format.jpg ...
      format.all ...
    end

    對個對法係來自個type有無做Mime.register
    Mime.register其中一行,有mime type係text/html,extension係html,symbol係:html
    咁對html, 搵有:html,咁就夾format.html

    咁Rails交出之時,就會對下Accept有無:html嘅mime type,對到有text/html,咁就send出去。

    如果client無話可以Accept,就會話406 Not Accepted。

    之不過Rails唔夠聰明,就算*都要指明,唔係佢唔識handle㗎。不過佢留有*/*來map去:all,咁format.all就會handle得到。


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