many-to-many

问题 how to overwrite a one to many records in odoo through odoo API ? This is my create json, what change I want to make in this json to overwrite(Replace) the existing? lead_product_ids ., now it is appending the records. Now i am getting multiple when update the records in this code instead of 0,0 what is the value, Please help. { "jsonrpc": "2.0", "params": { "model": "crm.lead", "method": "create", "args": [ { "type": "opportunity", "name": "Fgtrdhjkkmmmmmmmm1290", "pro_info": "Fggggggg

问题 I find myself in a bit of an unworkable situation with a SQL query and I'm hoping that I'm missing something or might learn something new. The structure of the DB2 database I'm working with isn't exactly built for this sort of query, but I'm tasked with this... Let's say we have Table People and Table Groups. Groups can contain multiple people, and one person can be part of multiple groups. Yeah, it's already messy. In any case, there are a couple of intermediary tables linking the two. The

问题 I have Locations model which hasMany Employees -- similarly Employees belongsTo Locations This is nice and works well, but then I looked at adding PhoneNumbers . Either a Location or an Employee could have a phone number (office numbers versus personal numbers) Logically: Locations hasMany PhoneNumbers (multiple office lines) and Employees hasMany PhoneNumbers (home / cell ?) However when you create a hasMany relationship like this in Laravel it adds a field to the PhoneNumbers table. So we

问题 I'm mapping a database using SQLAlchemy that have multiple cases of "false" many-to-many relationships. What I mean by this is, suppose I have the following objects: class User(Base): __tablename__ = 'user' id = Column(Integer, primary_key=True) addresses = relationship('Address', secondary='user_address') class Address(Base): __tablename__ = 'address' id = Column(Integer, primary_key=True) users = relationship('User', secondary='user_address') class UserAddressLink(Base): __tablename__ =

问题 when i want to update a list in jpa, the tables stays empty. no error at all. Getters and setters are present, just not listed here. here my classes: public class User implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue private int id; @ManyToMany private List<Course> courses; } public class Course implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue private int id; @ManyToMany(mappedBy="courses") private

问题 I have Application entity, want to express self bi-directional relationship with attribute in JPA. EX. QuoteStore(provider Application) provides services to online portal and many(consumer applications) and QuoteStore(consumer Application) consumes services from Siebel CRM and many (provider applications) The above approach works well when relationship is ManyToMany but not self (ex. App2DB or App2BizCase) For Self bidirectional ManyToMany relationship with attributes on application entity; I

问题 I would like to perform LINQ to SQL mapping in C#, in a many-to-many relationship, but where data is not mandatory. To be clear: I have a news site/blog, and there's a table called Posts . A blog can relate to many categories at once, so there is a table called CategoriesPosts that links with foreign keys with the Posts table and with Categories table. I've made each table with an identity primary key, an id field in each one, if it matters in this case. In C# I defined a class for each table

问题 my question is near a parent-child problem, and may need some recursive query, but i didn't find any answers by browsing forums. here is my problem: I've got 3 tables: T1 (people) T2 (places) T3 (relationship betwenn A and B) ------- ------ -------- id1 (pk) id2 (pk) id3 (pk) name city id_A id_B I would like to identify groups of places and people that are related. For example, if John visits London and Paris, Mary visits Paris and New York, Peter visits Bangalore and Tokyo, I would like to

问题 I'm trying to implement many to many in EF Code-first. I have found this code : public class Student { public Student() { } public int StudentId { get; set; } [Required] public string StudentName { get; set; } public virtual ICollection<Course> Courses { get; set; } } public class Course { public Course() { this.Students = new HashSet<Student>(); } public int CourseId { get; set; } public string CourseName { get; set; } public virtual ICollection<Student> Students { get; set; } } I understand

问题 I have the following model.py : class FinancialProduct(models.Model): active = models.BooleanField(default=True) name = models.CharField(max_length=20) abbreviation = models.CharField(max_length=3) table_name = models.CharField(max_length=5, choices=FP_TABLE_CHOICES) businesses = models.ManyToManyField(Business) And the following forms.py : class FinancialProductForm(ModelForm): business = ModelMultipleChoiceField(widget=CheckboxSelectMultiple(),required=True) class Meta: model =