How to run Rake tasks from within Rake tasks

Question

I have a Rakefile that compiles the project in two ways  according to the global variable  build type  which can be  debug or  release  the results go in separate directories    task  build   gt    some other tasks  do end   I wish to create a task that compiles the project with both configurations in turn  something like this   task  build all do      debug   release   each do  t       build type   t       call task  build with all the tasks it depends on       end end   Is there a way to call a task as if it were a method   Or how can I achieve anything similar

User · Answer

task  build all do      debug   release   each do  t       build type   t     Rake  Task  build   reenable     Rake  Task  build   invoke   end end   That should sort you out  just needed the same thing myself

User · Answer

for example   Rake  Task  db migrate   invoke

User · Answer

task  invoke another task do     some code   Rake  Task  another task   invoke end

User · Answer

If you need the task to behave as a method  how about using an actual method   task  build   gt    some other tasks  do   build end  task  build all do     debug   release  each    t  build t   end  def build type    debug          end   If you d rather stick to rake s idioms  here are your possibilities  compiled from past answers    This always executes the task  but it doesn t execute its dependencies   Rake  Task  build   execute  This one executes the dependencies  but it only executes the task if  it has not already been invoked   Rake  Task  build   invoke  This first resets the task s already invoked state  allowing the task to then be executed again  dependencies and all   Rake  Task  build   reenable Rake  Task  build   invoke  Note that dependencies already invoked are not automatically re-executed unless they are re-enabled  In Rake    10 3 2  you can use the following to re-enable those as well   Rake  Task  build   all prerequisite tasks each  amp  reenable

User · Answer

task  build all do      debug   release   each do  t       build type   t     Rake  Task  build   execute   end end

User · Answer

I would suggest not to create general debug and release tasks if the project is really something that gets compiled and so results in files  You should go with file-tasks which is quite doable in your example  as you state  that your output goes into different directories  Say your project just compiles a test c file to out debug test out and out release test out with gcc you could setup your project like this   WAYS     debug    release   FLAGS      FLAGS  debug      -g  FLAGS  release      -O  def out dir way    File join  out   way  end def out file way    File join out dir way    test out   end WAYS each do  way    desc  create output directory for   way     directory out dir way     desc  build in the   way -way    file out file way    gt   out dir way    test c   do  t      sh  gcc   FLAGS way   -c test c -o   t name     end end desc  build all ways  task  all   gt  WAYS map  way out file way    task  default   gt    all    This setup can be used like   rake all    builds debug and release  rake debug    builds only debug  rake release    builds only release    This does a little more as asked for  but shows my points    output directories are created  as necessary  the files are only recompiled if needed  this example is only correct for the simplest of test c files   you have all tasks readily at hand if you want to trigger the release build or the debug build   this example includes a way to also define small differences between debug and release-builds  no need to reenable a build-task that is parametrized with a global variable  because now the different builds have different tasks  the codereuse of the build-task is done by reusing the code to define the build-tasks  see how the loop does not execute the same task twice  but instead created tasks  that can later be triggered  either by the all-task or be choosing one of them on the rake commandline

User · Answer

If you want each task to run regardless of any failures  you can do something like   task  build all do     debug   release  each do  t       ts   0     begin         Rake  Task  build   invoke t      rescue       ts   1       next     ensure       Rake  Task  build   reenable   If you need to reenable     end     return ts   Return exit code 1 if any failed  0 if all success   end end

[ruby] How to run Rake tasks from within Rake tasks?

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