If you benefit from web2py hope you feel encouraged to pay it forward by contributing back to society in whatever form you choose!

*UPDATE* This module is no longer maintained. Please use SQLFORM.grid instead.

Add the webgrid.py module to your modules folder (download at bottom)

In your model:

webgrid = local_import('webgrid')

In your controller:

def index():
    grid = webgrid.WebGrid(crud)
    grid.datasource = db(db.things.id>0)
    grid.pagesize = 10
    return dict(grid=grid()) #notice the ()

The datasource can be a Set, Rows, Table, or list of Table. Joins are also supported.

grid.datasource = db(db.things.id>0) #Set
grid.datasource = db(db.things.id>0).select() #Rows
grid.datasource = db.things #Table
grid.datasource = [db.things,db.others] #list of Table
grid.datasource = db(db.things.id==db.others.thing)# join

The main row components of the WebGrid are header, filter, datarow, pager, page_total, footer

You can link to crud functions using action_links. Just tell it where crud is exposed:

grid.crud_function = 'data'

You can turn rows on and off:

grid.enabled_rows = ['header','filter', 'pager','totals','footer','add_links']

You can control the fields and field headers:

grid.fields = ['things.name','things.location','things.amount']
grid.field_headers = ['Name','Location','Amount']

You can control the action links (links to crud actions) and action headers:

grid.action_links = ['view','edit','delete']
grid.action_headers = ['view','edit','delete']

You will want to modify crud.settings.[action]_next so that it redirects to your WebGrid page after completing:

if request.controller == 'default' and request.function == 'data':
    if request.args:
        crud.settings[request.args(0)+'_next'] = URL(r=request,f='index')

You can get page totals for numeric fields:

grid.totals = ['things.amount']

You can set filters on columns:

grid.filters = ['things.name','things.created']

You can modify the Query that filters use (not available if your datasource is a Rows object, use rows.find):

grid.filter_query = lambda f,v: f==v

You can control which request vars are allowed to override the grid settings:

grid.allowed_vars = ['pagesize','pagenum','sortby','ascending','groupby','totals']

The WebGrid will use a field's represent function if present when rendering the cell. If you need more control, you can completely override the way a row is rendered.

The functions that render each row can be replaced with your own lambda or function:

grid.view_link = lambda row: ...
grid.edit_link = lambda row: ...
grid.delete_link = lambda row: ...
grid.header = lambda fields: ...
grid.datarow = lambda row: ...
grid.footer = lambda fields: ...
grid.pager = lambda pagecount: ...
grid.page_total = lambda:

Here are some useful variables for building your own rows:

grid.joined # tells you if your datasource is a join
grid.css_prefix # used for css
grid.response # the datasource result
grid.colnames # column names of datasource result
grid.total # the count of datasource result

For example, let's customize the footer:

grid.footer = lambda fields : TFOOT(TD("This is my footer" , 
                                               _class=grid.css_prefix + '-webgrid footer')

You can also customize messages:

grid.messages.confirm_delete = 'Are you sure?'
grid.messages.no_records = 'No records'
grid.messages.add_link = '[add %s]'
grid.messages.page_total = "Total:"

You can also also use the row_created event to modify the row when it is created. Let's add a column to the header:

def on_row_created(row,rowtype,record):
    if rowtype=='header':
        row.components.append(TH(' '))

grid.row_created = on_row_created

Let's move the action links to the right side:

def links_right(tablerow,rowtype,rowdata):
    if rowtype != 'pager':
        links = tablerow.components[:3]
        del tablerow.components[:3]

grid.row_created = links_right

alt text

If you are using multiple grids on the same page, they must have unique names.

Download webgrid.py

Download demo App

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Comments (112)

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  • 0
    hillmanov 10 years ago
    My table shows up on WebGrid, but the columns are much too wide to be useful. What is the best way to display 'thin' columns of integers. db.define_table('Commodity_Risk', Field('name','string'), Field('capacity','string'), Field('volatility','integer'), Field('bid_spread','integer'), Field('ask_spread','integer'), Field('low_limit','integer'), Field('high_limit','integer'), Field('volatility_surface','upload'), format = '%(name)s')

  • 0
    dymsza 10 years ago
    Tool is cool ;) but i have question is there any why to add owne action ? example: i have list of users and i want to have link to send email to user (next to edit link)

  • 0
    mrfreeze 10 years ago
    There are a couple ways. The easiest is to probably just modify the row when it's created:
    def add_mail_link(tablerow,rowtype,rowdata):
        if rowtype == 'datarow':
            mail_link = A(...)
            tablerow.components.insert(2, mail_link)
    grid.row_created = add_mail_link

  • 0
    iiit123 10 years ago
    will webgrid work for the following table too ? t=TABLE() t.append(TR(TD(value1),TD(value2),TD(value3),TD(value4))) ... ... ... grid.datasource=t thanks in advance...

  • 0
    mrfreeze 10 years ago
    The datasource must be a Set or Rows object like:
    db(db.things.id>0) #best way
    db(db.things.id>0).select() #slower way 
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