Weight Rate Charge skip Calculate

  • Resolved Jejoi

    (@ejoi8)


    7 years, 12 months ago

    Hi,

    My first attempt using this plugin is awesome but some weird things happen when I try to set Multiple Weight Range (0.1-0.4 lbs | 0.4-1.0 lbs). At first everything is ok, but after I revert back to single Weight Range (0.1-1.0 lbs) option, I faced situation as below:

    PRODUCT:
    Product Price: 0
    Product weight: 0.1 lbs

    SHIPPING:
    Weight: [0.1 – 1.1)
    Cost: 10 + 3 per 0.1 lbs (from 0.1 lbs)

    Situation Occur:
    1 item add to cart = $10 (OK)
    2 item add to cart = $13 (OK)
    3 item add to cart = $19(suppose to be $16)
    4 item add to cart = $22(suppose to be $19)
    5 item add to cart = $22(suppose to be $21)
    6 item add to cart = $28(suppose to be $24)

    I try to play around to fix it but things get more confusing. Do you have any idea what possibility how this situation happen? I try to remove and reinstall the plugin and yet the problem is still occur. How can I “Reset” this plugin thru database?

    https://wordpress.org/plugins/weight-based-shipping-for-woocommerce/

Viewing 3 replies - 1 through 3 (of 3 total)
  • Thread Starter Jejoi

    (@ejoi8)

    7 years, 12 months ago

    Update:
    I try to change the weight scale from 0.1 lbs to 1 lbs.

    PRODUCT:
    Product Price: 0
    Product weight: 1 lbs

    SHIPPING:
    Weight: [1 – 11)
    Cost: 10 + 3 per 1 lbs (from 1 lbs)

    Situation Occur:
    1 item add to cart = $10 (OK)
    2 item add to cart = $13 (OK)
    3 item add to cart = $16 (OK)
    4 item add to cart = $19 (OK)
    5 item add to cart = $21 (OK)
    6 item add to cart = $24 (OK)

    Everything works fine if I scale up the weight. But, I need to use 0.1 lbs instead of 1 lbs in my product. I think maybe some sort of config setting have been stored in the database. I try to delete the woowbs_main_settings but the problem still the same. Please help me. Thank you in advance.

    Plugin Author Dan

    (@dangoodman)

    7 years, 11 months ago

    Hi,

    It’s a float-point numbers rounding issue. Some numbers such as 0.1 or 0.3 have no exact binary representation and they become something like 0.100000000000000006 or 0.299999999999999989 appropriately. So 0.3 / 0.1 is giving ~2.999, not exactly 3.

    That’s why the count of items is not always calculated correctly in your example.

    I’ll think about a solution and update you in a few days.

    By the way, in your examples $21 should be replaced with $22 and $24 with $25, to be correct.

    Plugin Author Dan

    (@dangoodman)

    7 years, 11 months ago

    Please check out the latest version 4.1.3, it’s addressing the issue.

Viewing 3 replies - 1 through 3 (of 3 total)
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