Django input field

Asked Oct 30 '21 at 12:47

Active Oct 30 '21 at 12:47

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I am making a project in Django which takes an equation having some variables and then perform mathematical function on it using python.

Right now, I have CharField as an input field for entering equation but the problem is that it returns string which I can't use for calculation purpose.

For eg. The user inputs an equation $x^2 + $y^2. Now I want to substitute value of x and y but the equation is in the form of string and I cannot calculate the value.

So, is there any input field in Django which can take equation in a particular form so that I can input value in those variables?

asked Oct 30 '21 at 12:47

Arnav

You can substitute your variables and use eval() on that: https://stackoverflow.com/a/9686074/4151233 – Marco Oct 30 '21 at 13:00
Note that `eval()` can be very dangerous in terms of security. – meni181818 Oct 30 '21 at 21:37
@meni181818 Okay! So, can you suggest any other method? – Arnav Oct 31 '21 at 05:05
@Arnav share what logic/library you are using to process the equation. – meni181818 Oct 31 '21 at 19:50
@meni181818 I am making a function that takes user-input Equation from Django form and then I am calling that function in the matplotlib 3D library as the 3rd argument for plotting the 3D graph. – Arnav Nov 02 '21 at 06:32
@Arnav so maby with 2 fields, first for `x`, and second for `y` – meni181818 Nov 02 '21 at 09:51

Django input field

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