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16 lines
653 B
16 lines
653 B
#. Go to Invoicing > Configuration > Contracts > Formulas (quantity).
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#. Define any formula based on Python code that stores at some moment a
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float/integer value of the quantity to invoice in the variable 'result'.
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You can use these variables to compute your formula:
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* *env*: Environment variable for getting other models.
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* *context*: Current context dictionary.
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* *user*: Current user.
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* *line*: Contract recurring invoice line that triggers this formula.
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* *contract*: Contract whose line belongs to.
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* *invoice*: Invoice (header) being created.
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.. figure:: images/formula_form.png
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:alt: Formula form
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:width: 600 px
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