I understand and I do not understand why the problem arises there but your error is:
<class 'sqlite3.IntegrityError'> foreign key constraint failed So I would exclude it is a problem with the foreign key contraints. On Thursday, 5 December 2013 09:46:59 UTC-6, Loïc wrote: > > I know Massimo, but my problem seems to be located in the Widget management > And that's why I started my message with " > *I have the same problem as the one explained here : > https://groups.google.com/forum/?fromgroups#!topic/web2py/klspqXpha4E > <https://groups.google.com/forum/?fromgroups#%21topic/web2py/klspqXpha4E>But > as I have more specific informations, I start a new thread...*" > > Do you have any hints about that? > Thank you > > Le jeudi 5 décembre 2013 16:27:55 UTC+1, Massimo Di Pierro a écrit : >> >> The problem is discussed here: >> https://groups.google.com/forum/#!topic/web2py/klspqXpha4E >> >> On Thursday, 5 December 2013 05:04:17 UTC-6, Loïc wrote: >>> >>> Hello all- >>> >>> I have the same problem as the one explained here >>> :https://groups.google.com/forum/?fromgroups#!topic/web2py/klspqXpha4E >>> But as I have more specific informations, I start a new thread... >>> >>> *My Model (simplified) : * >>> db.define_table('page', >>> Field('parent', 'reference page', label=T('Parent')), >>> Field('title', unique=True, notnull=True, label=T('Title'))) >>> >>> db.page.parent.requires = IS_EMPTY_OR(IS_IN_DB(db, db.page.id, >>> '%(title)s', zero=T('<Empty>'))) >>> pageSelector = HierarchicalSelect(db, db.page, db.page.title, db.page. >>> rank) >>> db.page.parent.widget = pageSelector.widget >>> >>> The goal of the HierarchicalSelect widget is to have a "tree-view" of >>> all my pages. More elegant than the default selector >>> >>> *My Controller (simplified)* >>> def edit_page(): >>> page = db.page(request.args(0)) >>> crud.settings.update_deletable = False >>> form = crud.update(db.page,page,next=URL('show_page', args=page.id)) >>> return dict(form=form) >>> >>> From 2.8.2 update, when I update a page, I get an error : >>> <class 'sqlite3.IntegrityError'> foreign key constraint failed >>> >>> This error *occurs only when I update a page and select "<Empty>" value >>> for the "parent" field.* >>> When I *remove the two following lines of my model definition, >>> everything works fine* >>> pageSelector = HierarchicalSelect(db, db.page, db.page.title, db.page. >>> rank) >>> db.page.parent.widget = pageSelector.widget >>> >>> >>> So the error seems to be in my HierarchicalSelect class. >>> *Here is the code : * >>> class HierarchicalSelect(object): >>> def __init__(self, db, table_name, title_field, order_field): >>> self.options=[] >>> self.db = db >>> self.tablename = table_name >>> self.fieldname = None >>> self.title = title_field >>> self.order = order_field >>> self.type = None >>> self.rows=None >>> self.hierarchyseparator = XML(" "*4) >>> >>> def _childs_list(self, field, depth): >>> path = self.hierarchyseparator*depth >>> >>> path += self.hierarchyseparator >>> self.options.append((field['id'], path+field[self.title])) >>> [self._childs_list(child, (depth+1)) for child in self.rows.find >>> (lambda row: row.parent == field.id)] >>> >>> def widget(self, field, value): >>> self.fieldname = field.name >>> self.type = field.type >>> self.rows = self.db(self.tablename).select(orderby=self.order) >>> self.options.append(("", T('<Empty>'))) #add root node >>> >>> [self._childs_list(field,0) for field in self.rows.find(lambdarow >>> : row.parent < 1)] >>> opt=[OPTION(name, _value=key) for key,name in self.options] >>> sel = SELECT(opt,_id="%s_%s" % (self.tablename, self.fieldname), >>> _class="generic-widget", >>> _name=self.fieldname, >>> value=value) >>> return sel >>> >>> *HTML generated with the default SELECT helper for the first option (the >>> option that causes error)* >>> >>> <select class="generic-widget" id="page_parent" name="parent"><option >>> value=""><Aucun></option> >>> >>> >>> *HTML generated with my Widget* *for the first option (the option that >>> causes error)* >>> <select class="generic-widget" id="page_parent" name="parent"><option >>> value=""><Aucun></option> >>> >>> >>> The HTML seems to be the same, so I don't understand what's wrong with my >>> widget... >>> >>> >>> Can anybody help me with that? >>> Thank you >>> >> -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
