Extend or override doctype json through custom app

Frappe Framework Customization
1

Is it possible to extend or override a built in doctype json throu a custom app?

2

Yes, very much.

3

Is the json file to be included in the hooks.py or in the js?
Whats the way to do it?

4

Through both depending on your case, could you specify your requirement?

5

I’m looking for solution for this topic, because I want to override doctype json file to add some extra info.

@Shinzuco can you provide us both solution or point us to the related documentation, thanks

6

create a custom app
use customize doctype option,
Add the file to hooks.py (of the custom app) like so

fixtures = [
{
    "dt": "Custom Field",
    "filters": [
        [
            "dt",
            "in",
            ("DOCTYPENAME"),],],
  		},]

Run the command bench export-fixtures
install the custom app wherever you need the changes to apply

7

Can I replace fields? in case I want to rename a field or delete it?

8

To rename a field, customtomize the doctype and change the label,
Instead of deleting the field, you may make it hidden/readonly.

After both cases, run the below code (instead of Custom Field, use Property Setter.)

fixtures = [
{
    "dt": "Property Setter",
    "filters": [
        [
            "dt",
            "in",
            ("DOCTYPENAME"),],],
  		},]
9

Thanks @Shinzuco my problem with renaming the fields is that I;m integrating with an external system which uses camel case syntax.

So this system is looking for currencyType but I’m storing currencytype.

For anyone else having this issue, I am solving it by creating an API method for translating the field names and I;m letting frappe autoname them when creating doctypes.

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