ACADuser

Ruby Question?

Recommended Posts

What I want to do is test a global variable to see if I already assigned a valid value to it. If not assign a value now.

Any value < 35 or nil is invalid for my requirements

 

if $roof_tl < 35.0

     $roof_tl=40.0

end

 

This is the error

Evaluation Error: Ruby NoMethodError: undefined method `<' for nil:NilClass

 

Share this post


Link to post
Share on other sites

if $roof_ti.nil?

     $roof_ti=40.0

elsif $roof_tl < 35.0

     $roof_tl=40.0

end

  • Upvote 1

Share this post


Link to post
Share on other sites

Thanks for that Joe.

 

I started playing around again after not using these macros for some time.

There is another error I can not understand.

 

# total_roof_Load_CMU_wall_Label

# apply to a closed polyline label.

# =================================

# Alan Butler 10/06/2018

# Calculate the roof + wall + foundation weight for a

# onestory 10' CMU wall + 2' stem wall

# Foundation 16"x8" 150# concrete

# =================================

_area = owner.area


if $roof_ti.nil?

$roof_ti=40.0 # Global Roof Total Load = 40.0 asphalt roofing

elsif $roof_tl < 35.0

$roof_tl=40.0

end

_roofTL = $roof_tl

_RL=(_area * _roofTL)

cmu8psf=55.0 # normal average weight 8" block w/ verticals grouted @ 48"oc


ftr_w= 16.0 #footer width in inches

ftr_h= 8.0 #footer heith in inches

ftr_wt= (ftr_w*ftr_h/144.0*150) #footer weight in PLF w/ 150# / ft3 CC


wall_ht= 10.0 # wall height

wall_wt= ((wall_ht + 2.0) * cmu8psf) # 10'-0" CMU wall weight with 3 course stem wall = 12' total height


plf = (wall_wt+ftr_wt+(_area * _roofTL)).round(1) # Wall + Footer + Roof

psf=(plf / (ftr_w / 12.0)).round(1) # soil PSF


str="Roof Load #{_area.round(1).to_s} x #{$roof_tl.to_s} TL=#{ (_area.round(1)*$roof_tl).to_s} PLF\n" \

+ "CMU Wall #{wall_wt.round(0)} PLF \n"\

+ "16x8 Foundation #{ftr_wt.round(1).to_s} PLF \n"\

+ "#{plf.to_s} PLF TL on Soil \n"\

+ "#{psf.to_s} PSF Soil Load"

 

 

I don't remember this error before.

Evaluation Error: Ruby ArgumentError: cannot add a Measurement of area to a unitless value

Stack Trace:

from (eval):28:in `+'

from (eval):28:in `block (3 levels) in <main>'

from (eval):1:in `instance_eval'

from (eval):1:in `block (2 levels) in <main>'

from eval:9:in `eval'

from eval:9:in `block (2 levels) in <main>'

from eval:3:in `loop'

from eval:3:in `block in <main>'

 

Share this post


Link to post
Share on other sites

Likely your _area = owner.area needs to be converted to a float.   

 

_area = owner.area.to_f

 

 

Yup that should do it....       image.png.b904a25d60ad7737c998f10b0bb7e1f6.png

 

It would be nice if chief could include the line number in the error code.....  Oh and number the lines.

Share this post


Link to post
Share on other sites

Wow, you mean we can not multiply a floating-point value by an integer?

 

I'm sure this worked last time I used it in X11.

 

Yes, it looks very difficult to troubleshoot ruby in Chief.

 

How do you find out a variable value during the run of a routine?

 

I don't see a way to test a variable to see if it is a string, integer or float.

 

 

 

Share this post


Link to post
Share on other sites

How about this one?

_area = owner.area
if _area.nil?
  "No Area"
else
   _area=_area.to_f
  plf = (_area * $roof_t).round(1).to_s
end

 

Share this post


Link to post
Share on other sites

The error in post #3 is in line 28.  from (eval):28:in '+'

  • wall_wt= ((wall_ht + 2.0) * cmu8psf) # 10'-0" CMU wall weight with 3 course stem wall = 12' total height

You have tried to add a floating point value to a measurement.

  • wall_ht is a measurement in X12
  • 2.0 is a floating point value

This is not allowed in Chief so you either need to change 2.0 to a measurement or wall_ht to a floating point.

Adding or subtracting measurements and non-measurements is not allowed.  IMO Chief should have made this work by automatically converting the non-measurement value to a measurement of the same units.

 

  • Upvote 1

Share this post


Link to post
Share on other sites

Thank you Joe!

 

I got this to work too:

 

_area = owner.area

 

if $roof_tl.nil?

$roof_tl=40.0 # Global Roof Total Load = 40.0 asphalt roofing

elsif $roof_tl < 35.0

$roof_tl=40.0

end

 

_RL=(_area.to_f * $roof_tl)

 

if _area.nil?

"No Area"

else

_area=_area.to_f

plf = "AREA LOAD "+(_area * $roof_tl).round(1).to_s + "#"

end

 

 

BTW is there a simple way to add code tags to this forum post?

 

Share this post


Link to post
Share on other sites

Another way to trap errors is to use the following:

  • begin
  •   if $roof_ti < 35.0    # This line could generate an error if $roof_ti has not been initiated
  •     $roof_ti = 40.0  
  •   end
  • rescue
  •   $roof_ti = 40.0 
  • end

In this case if the error occurs in the line #2 it's trapped and line #6 is processed.  This is standard Ruby error handling.

  • Upvote 1

Share this post


Link to post
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now

  • Member Statistics

    27854
    Total Members
    6254
    Most Online
    ChiefUserGingerP
    Newest Member
    ChiefUserGingerP
    Joined