Custom Button Throws Error at compile

Support Developer
1

I want to create a button, so I look at tutorial, but the tutorial it requires Workflow which I don’t.. I just wanna create a button that invoke a classmethod, and print “HELLO WORLD” in console.

So I search and found this , so I follow his steps and I my code became like below:

In a form:

<form>
   <!-- codes here -->
   <button colspan="6" name="add_valuation_item" string=" Add New" icon="tryton-add"/>
   <!-- codes there -->
</form>

In module xml:

        <record model="ir.action.act_window" id="act_proposal_window">
            <field name="name">Proposals</field>
            <field name="res_model">ltl.proposal</field>
            <field name="order" eval="[('create_at','DESC')]" pyson="1"/>
        </record>
        <record model="ir.action.act_window.view" id="act_proposal_window_form">
            <field name="sequence" eval="20"/>
            <field name="view" ref="proposal_view_form"/>
            <field name="act_window" ref="act_proposal_window"/>
        </record>
        <record model="ir.action.act_window.view" id="act_proposal_window_list">
            <field name="sequence" eval="10"/>
            <field name="view" ref="proposal_view_list"/>
            <field name="act_window" ref="act_proposal_window"/>
        </record>
        <!-- ADD VALUATION BUTTON -->
        <record model="ir.model.button" id="add_valuation_button">
            <field name="name">add_valuation_item</field>
            <field name="string">Add New</field>
            <field name="model" search="[('model', '=', 'ltl.proposal')]"/>
        </record>

In Proposal class:

    @classmethod
    def __setup__(cls):
        super(Proposal, cls).__setup__()
        cls._buttons.update({
            'add_valuation_item': {}
        })

    @classmethod
    @ModelView.button
    def add_valuation_item(cls, attribute):
        log.info('>>'*40)
        log.info(f'>>>>>>>>>>>>>>>>>>>> HELLO WORLD')
        log.info('>>'*40)
        return True

Compile time error:

Traceback (most recent call last):
  File "/home/tryton/project/.env/lib/python3.10/site-packages/trytond/convert.py", line 414, in parse_xmlstream
    self.sax_parser.parse(source)
  File "/usr/lib/python3.10/xml/sax/expatreader.py", line 111, in parse
    xmlreader.IncrementalParser.parse(self, source)
  File "/usr/lib/python3.10/xml/sax/xmlreader.py", line 125, in parse
    self.feed(buffer)
  File "/usr/lib/python3.10/xml/sax/expatreader.py", line 217, in feed
    self._parser.Parse(data, isFinal)
  File "../Modules/pyexpat.c", line 416, in StartElement
  File "/usr/lib/python3.10/xml/sax/expatreader.py", line 333, in start_element
    self._cont_handler.startElement(name, AttributesImpl(attrs))
  File "/home/tryton/project/.env/lib/python3.10/site-packages/trytond/convert.py", line 446, in startElement
    self.taghandler.startElement(name, attributes)
  File "/home/tryton/project/.env/lib/python3.10/site-packages/trytond/convert.py", line 255, in startElement
    search_model = field.model_name
AttributeError: 'Char' object has no attribute 'model_name'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/tryton/project/.env/bin/trytond-admin", line 33, in <module>
    admin.run(options)
  File "/home/tryton/project/.env/lib/python3.10/site-packages/trytond/admin.py", line 59, in run
    pool.init(update=options.update, lang=list(lang),
  File "/home/tryton/project/.env/lib/python3.10/site-packages/trytond/pool.py", line 143, in init
    restart = not load_modules(
  File "/home/tryton/project/.env/lib/python3.10/site-packages/trytond/modules/__init__.py", line 425, in load_modules
    _load_modules(update)
  File "/home/tryton/project/.env/lib/python3.10/site-packages/trytond/modules/__init__.py", line 395, in _load_modules
    load_module_graph(graph, pool, update, lang, indexes)
  File "/home/tryton/project/.env/lib/python3.10/site-packages/trytond/modules/__init__.py", line 238, in load_module_graph
    tryton_parser.parse_xmlstream(fp)
  File "/home/tryton/project/.env/lib/python3.10/site-packages/trytond/convert.py", line 416, in parse_xmlstream
    raise ParsingError("in %s" % self.current_state()) from e
trytond.convert.ParsingError: in record 'ltl_proposal.add_valuation_button'

What to do?.. really need help here

Bromo

2

Which tryton version are you using?
It seems you are using 7.6 series but your are using the button defintion from older series:

In 7.6 series model is now a char field, so your button should be something like:

Hope this helps!

1 Like
3

Yes.. it worked @pokoli thanks a lot bro :rofl:

4

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