relation types

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admin_wiky 17 Jun, 2014

Hi all,

I have a question about relation types.
What are differences between hasMany and BelongsTo? I am not sure after reading http://www.chronoengine.com/faqs/72-ccv5/5218-adding-1-more-belongsto-model-to-our-connection.html

HasOne is 1:1
hasMany is 1:N
but BelongsTo ?

thx

Max_admin 27 Jun, 2014

Answer

belongs to is used when the model belongs to another 1, its a reversed 1:1 or 1:N, in other words, you use this when you are working on the "slave" model, and use hasOne or hasMany when you are working with the "master" model.

Regards,
Max

Max, ChronoForms developer
ChronoMyAdmin: Database administration within Joomla, no phpMyAdmin needed.
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admin_wiky 30 Jun, 2014

Sorry, But I dont understand what u mean by Master or slave model. could u be pls more specific?
thx

Max_admin 30 Jun, 2014

Parent & Child, in a User > Profile relationship, the User would be the master and the Profile a slave, or User > Comment, but in some situations, you may want to start the relation with "Profile" instead of User, and in this case you need to use "belongsTo", because you are doing it in a reversed direction!

Regards,
Max

Max, ChronoForms developer
ChronoMyAdmin: Database administration within Joomla, no phpMyAdmin needed.
ChronoMails simplifies Joomla email: newsletters, logging, and custom templates.

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admin_wiky 22 Jul, 2014

I understand u now, but can I use BelongsTo if I have in slave table 4 records per 1 record in master?
for example, user (master) can have unlimited count of comments (slave).

Max_admin 23 Jul, 2014

Yes, but in this case you will get 4 records loaded, 1 for each comment, with the same user record!

Max, ChronoForms developer
ChronoMyAdmin: Database administration within Joomla, no phpMyAdmin needed.
ChronoMails simplifies Joomla email: newsletters, logging, and custom templates.

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